Re: How To Calculate The Quantity Of Tiles Needed; Selecting Tiles & Types. by Bar1941(m): 4:30pm On Sep 16, 2019 
I couldn't go through it though but from a glance I can see the op did a great job. Am saving the post for future reference. 1 Like 1 Share 
Re: How To Calculate The Quantity Of Tiles Needed; Selecting Tiles & Types. by thedio(m): 4:32pm On Sep 16, 2019 
God bless u. This is what av been trying to calculate for days now 
Re: How To Calculate The Quantity Of Tiles Needed; Selecting Tiles & Types. by Sammy011(m): 4:32pm On Sep 16, 2019 
saydfact: GoodDay and its good to be back.
Let's go practical (as we always do)  calculating the number of tiles needed to tile various spaces within the building (floor and wall tiling).
We would make reference to our 3 bedroom plan, designed specifically for Nairaland lectures and calculate the tiles needed in the living room, one of the bedrooms and the master's toilet's floor and wall tiles.
SELECTING TILES
1. Tiles come in various sizes, the common ones being 150x150, 200x200, 300x300, 150x300, 200x400, 300x600, 400x400 and 600x600; the first thing to do is pick a tile (based on clients choice or use) for each floor and wall. There is no rule stopping you from using any particular tile size for floor or wall, as long as it has the perfect surface finish for that use.
e.g, a glazed (slippery) tile is not appropriate in the bathroom, so if I find any nonslippery tile, irrespective of the size, I can use it for my wet floors. Wet floors include Bathroom, Swimming pool, Laundry, etc. (We've had buildings where 600x600 tiles were used on the wall and 150x150 tiles used on the floor)  in summary, the tile finish NOT the tile size determines where it is used.
2. Select tiles for each space. (Let's select ours too). I'll go with the popular opinion; Living Room (600x600), Bedroom (400x400), Bathroom Floor (300x300) and Bathroom Wall (200x400).
Note: * Glazed tiles cannot be used on wet floors  it's very slippery if the floor is wet and dangerous * UnGlazed, Matte, Rough tiles can be used on any surface (wet or dry)
3. Calculate the area of the spaces (floor and wall) separately  This uses the simple LxB (area of a rectangle principle)  and write it out.
Note: * Remember to deduct door and window openings where applicable (e.g Area of wall = 10m2; area of window = 0.5m2 therefore area to be tiled = 10m2  0.5m2 = 9.5m2) * After getting your area to be tiled, ADD 10% of quantity for waste & broken tiles. (e.g 9.5m2 + 10% of 9.5m2 >> 9.5 + 0.95 >> 10.45m2)
4. Calculate the Total area of Tiles you're picking; this varies from one manufacturer to the other and from one product size to the other. >> this means that while 400x400 tiles from SaydFact Ceramics contain 11 pcs, those of Teewhy2 Tiles Ltd might contain 13 pcs  It is, therefore, important to know how much pieces each pack of tiles you're buying contain.
5. Ascertain the total area of one pack of tiles (either by calculating or checking on the pack), use this figure to divide the total square area of the room to be tiled and the result gives you quantities needed  in simple terms >> (AREA OF LIVING ROOM / area of 1 pack of tiles) = Quantity of Tiles needed (remember to add 10% for waste).
LETS NOW GO PRACTICAL BY CALCULATING USING THE ATTACHED DRAWING (see pics below) and information in No2 above.
A. Master's Bedroom:
* From the diamond below; total floor area of Master's Rm is 13.20m2 * Lets agree that our 400x400 tiles contain 11 pieces; hence area of 1 pack in meters >> 0.4m x 0.4m x 11 pcs (400mm is same as 0.4m and area of 1 tile is 0.4 x 0.4, while the area of 1 pack is (Area of 1 tile x number of tiles in 1 pack)
1 PACK = 0.4 x 0.4 x 11 = 1.76m2
Number of tiles needed to complete Master's Rm floor = 13.20 (divided by) 1.76m2 = 13.20 / 1.76 = 7.5 packs
before we add for waste; let's calculate skirting for the Bedroom using 120mm as skirting height.
* The 1st question is how many skirting can we get from 1 tile? Ans: Lenght of tiles / Height of skirting = 400 / 120 = 3 skirting from 1 tiles.
* What is the perimeter of the space needing skirting? Ans: From the diagram, bedroom is 4150 by 3150 hence perimeter of room = 4150 + 4150 + 3150 + 3150 = 14600mm
* Deduct openings from the perimeter ie 2 doors (toilet and bedroom doors) where there won't be need for skirting >> 750+900 = 1650mm
* Length requiring skirting = 14600mm  1650mm = 12950mm
* Numbers of Skirting needed = 12950 / 400 (lenght of 1 tile) = 33 pcs (approximate to the next whole nos)
* Number of Tiles needed to make requirement = 33 pcs / 3 (number of skirting gotten from 1 tile) = 11 pcs (11 tiles are needed for skirting)
* Number of packs needed for skirting = 11 pcs / 11 pcs (number in 1 pack) = 1 pack is needed.
TOTAL TILES NEEDED FOR MASTER'S BEDROOM: 7.5 PACKS (FLOOR) + 1 PACK (SKIRTING) = 8.5 PACKS.
ADD 10% FOR WASTE >> 8.5 Packs + 10% of 8.5 = 8.5+ 0.85 = 9.35 packs needed
HENCE BUY 10 PACKS (approximated to the next whole number because you can't buy half tiles)
B. Living Room: (Straight to Biz)
We're using 600x600 tiles and each pack contains 4 pcs; hence Area of 1 pack = 0.6x0.6x4 = 1.44m2 Area of Living Room (see diagram) = 22.02m2
* Number of Packs needed for Floor >> 22.02 / 1.44 = 15.2 packs
Skirting >> Perimeter of Living Room  (All Openings) = 12.2m or 12200mm
* Number of Skirting in 1 tiles >> 600 / 120 = 5 pcs (from 1 tiles)
* Number of skirting needed for Living Room = 12200 / 600 = 21 pcs
* Number of Tiles needed to meet requirements = 21 / 5 = 5 tiles
* Number of packs needed for skirting = 5 tiles / 4 pcs (number in 1 pack) = 1.25 pack is needed.
TOTAL TILES NEEDED FOR LIVING ROOM: 15.2 PACKS (FLOOR) + 1.25 PACK (SKIRTING) = 17 PACKS.
ADD 10% FOR WASTE >> 17 Packs + 10% of 17 = 17+ 1.7 = 18.7 packs needed
HENCE BUY 19 PACKS (approximated to the next whole number because you can't buy half tiles)
C. Bathroom Floor: (using 300mm by 300mm Tiles)
Area of Floor / Area of 1 pack of Tiles >> 3.26 / 1.35 (assuming nos in 1 pack = 15nos) = 2.4 packs
There's no skirting in Bathroom because we have wall tiles.
TOTAL TILES NEEDED FOR BATHROOM FLOOR = 2.4 + 10% of 2.4 = 3 PACKS
D. Bathroom Wall:
We're using 200x400 tiles and each pack contains 17 pcs; hence Area of 1 pack = 0.2x0.4x17 = 1.36m2
Let's also assume that we're tiling upto 2.1m only i.e Window level (the alternative is to tile upto 3m; i.e ceiling level)
* What is the perimeter of the space needing wall tiles? Ans: From the diagram, bathroom is 2100 by 1500 hence perimeter of room = 2100 + 2100 + 1500 + 1500 = 7200mm = 7.2m
* Find total area to be tiled >> Perimeter x Height used >> 7.2m x 2.1m = 15.12m2
* Deduct Area of openings from the Area above i.e 1 door (2.1m x 0.75m) and 1 window (0.6m x 0.6m) >> (1.6m2 + 0.36m2) = 1.96m2
* Hence; Area to be tiled = 15.12m2  1.96m2 = 13.16m2
Now we revert to our earlier formulas i.e AREAS TO BE TILED / AREA OF 1 PACK = NUMBERS OF PACKS NEEDED
* 13.16m2 / 1.36m2 (area of 1 pack) = 9.7 packs = 10 packs (approximate to next whole number)
TOTAL TILES NEEDED FOR TOILET WALL: 10 PACKS
ADD 10% FOR WASTE >> 10 Packs + 10% of 10 = 10 + 1 = 11 packs needed
HENCE BUY 11 PACKS
Do the above for all space in the building; You can even prepare an excel file with the formulas so you won't need calculations each time; just input the area of floor and area of tiles and bingo.
Thanks for Following...
This is great!!! Thanks for this piece of info

Re: How To Calculate The Quantity Of Tiles Needed; Selecting Tiles & Types. by famouscargo4u: 4:34pm On Sep 16, 2019 
Thank you so much OP. This is what i need at the moment. 
Re: How To Calculate The Quantity Of Tiles Needed; Selecting Tiles & Types. by salbis(m): 4:39pm On Sep 16, 2019 
Very very educative. Nice work OP. 
Re: How To Calculate The Quantity Of Tiles Needed; Selecting Tiles & Types. by correctyourself(m): 4:42pm On Sep 16, 2019 
Good one. 
Re: How To Calculate The Quantity Of Tiles Needed; Selecting Tiles & Types. by mygeeZ(m): 4:46pm On Sep 16, 2019 
Nice Job OP.. I commend you for your efforts. I couldn't go through the entire write up.. My observations; which remains the fact concerning tiles and tiles business.. 400*400 has 12pcs in a carton and its 0.4*0.4*12 is 1.92sqm its floor tiles and can be used for rooms floor, toilet/,bathroom floors,etc.. Price range is between N1100 to N1800 per square metre. 600*600 contains 4pcs for floor(sitting room) and any other rooms of choice.. 0.60*0.60*4 is 1.44sqm per carton..
300*600 floor is 8pcs 20*30(outdated) wall 25*40 wall 15pcs.. (Nigeria and China) 1100 to 1200 20*60 10pcs or 12pcs Spanish N2500 to N2700 1200*600 and other sizes..
Also marble /granite tiles for floor in different sizes.. Even for staircase and kitchen cabinet.. You can actually use N28,000 to buy marble for kitchen cabinet..
For further enquires contact us..Reachout Marble Nigeria Limited.. 08030901894 WhatsApp/call.. We are in Lagos.. Just beside Union bank Coker branch, Lagos badagry road, Orile.. Try the company name on google map and your a stone away from getting the right tiles and at cheaper prices.. My name is Donald.. 
Re: How To Calculate The Quantity Of Tiles Needed; Selecting Tiles & Types. by femi4: 4:47pm On Sep 16, 2019 
See stress.....una no go allow tiler chop again 
Re: How To Calculate The Quantity Of Tiles Needed; Selecting Tiles & Types. by nextstep(m): 4:50pm On Sep 16, 2019 
Nwaohafia1: Good info, but Why disturb my brain when I have an engineer that I am paying for the job? You don't have to have exact numbers, but I think it's always good to have a bit more info... as in they may over quote the number of tiles needed, or even the labour. Trust your engineer, but verify. OP great work here on educating us. I also really like this plan  it's very well laid out. 1 Like 1 Share 
Re: How To Calculate The Quantity Of Tiles Needed; Selecting Tiles & Types. by wwwihy: 4:52pm On Sep 16, 2019 
saydfact: GoodDay and its good to be back.
Let's go practical (as we always do)  calculating the number of tiles needed to tile various spaces within the building (floor and wall tiling).
We would make reference to our 3 bedroom plan, designed specifically for Nairaland lectures and calculate the tiles needed in the living room, one of the bedrooms and the master's toilet's floor and wall tiles.
SELECTING TILES
1. Tiles come in various sizes, the common ones being 150x150, 200x200, 300x300, 150x300, 200x400, 300x600, 400x400 and 600x600; the first thing to do is pick a tile (based on clients choice or use) for each floor and wall. There is no rule stopping you from using any particular tile size for floor or wall, as long as it has the perfect surface finish for that use.
e.g, a glazed (slippery) tile is not appropriate in the bathroom, so if I find any nonslippery tile, irrespective of the size, I can use it for my wet floors. Wet floors include Bathroom, Swimming pool, Laundry, etc. (We've had buildings where 600x600 tiles were used on the wall and 150x150 tiles used on the floor)  in summary, the tile finish NOT the tile size determines where it is used.
2. Select tiles for each space. (Let's select ours too). I'll go with the popular opinion; Living Room (600x600), Bedroom (400x400), Bathroom Floor (300x300) and Bathroom Wall (200x400).
Note: * Glazed tiles cannot be used on wet floors  it's very slippery if the floor is wet and dangerous * UnGlazed, Matte, Rough tiles can be used on any surface (wet or dry)
3. Calculate the area of the spaces (floor and wall) separately  This uses the simple LxB (area of a rectangle principle)  and write it out.
Note: * Remember to deduct door and window openings where applicable (e.g Area of wall = 10m2; area of window = 0.5m2 therefore area to be tiled = 10m2  0.5m2 = 9.5m2) * After getting your area to be tiled, ADD 10% of quantity for waste & broken tiles. (e.g 9.5m2 + 10% of 9.5m2 >> 9.5 + 0.95 >> 10.45m2)
4. Calculate the Total area of Tiles you're picking; this varies from one manufacturer to the other and from one product size to the other. >> this means that while 400x400 tiles from SaydFact Ceramics contain 11 pcs, those of Teewhy2 Tiles Ltd might contain 13 pcs  It is, therefore, important to know how much pieces each pack of tiles you're buying contain.
5. Ascertain the total area of one pack of tiles (either by calculating or checking on the pack), use this figure to divide the total square area of the room to be tiled and the result gives you quantities needed  in simple terms >> (AREA OF LIVING ROOM / area of 1 pack of tiles) = Quantity of Tiles needed (remember to add 10% for waste).
LETS NOW GO PRACTICAL BY CALCULATING USING THE ATTACHED DRAWING (see pics below) and information in No2 above.
A. Master's Bedroom:
* From the diamond below; total floor area of Master's Rm is 13.20m2 * Lets agree that our 400x400 tiles contain 11 pieces; hence area of 1 pack in meters >> 0.4m x 0.4m x 11 pcs (400mm is same as 0.4m and area of 1 tile is 0.4 x 0.4, while the area of 1 pack is (Area of 1 tile x number of tiles in 1 pack)
1 PACK = 0.4 x 0.4 x 11 = 1.76m2
Number of tiles needed to complete Master's Rm floor = 13.20 (divided by) 1.76m2 = 13.20 / 1.76 = 7.5 packs
before we add for waste; let's calculate skirting for the Bedroom using 120mm as skirting height.
* The 1st question is how many skirting can we get from 1 tile? Ans: Lenght of tiles / Height of skirting = 400 / 120 = 3 skirting from 1 tiles.
* What is the perimeter of the space needing skirting? Ans: From the diagram, bedroom is 4150 by 3150 hence perimeter of room = 4150 + 4150 + 3150 + 3150 = 14600mm
* Deduct openings from the perimeter ie 2 doors (toilet and bedroom doors) where there won't be need for skirting >> 750+900 = 1650mm
* Length requiring skirting = 14600mm  1650mm = 12950mm
* Numbers of Skirting needed = 12950 / 400 (lenght of 1 tile) = 33 pcs (approximate to the next whole nos)
* Number of Tiles needed to make requirement = 33 pcs / 3 (number of skirting gotten from 1 tile) = 11 pcs (11 tiles are needed for skirting)
* Number of packs needed for skirting = 11 pcs / 11 pcs (number in 1 pack) = 1 pack is needed.
TOTAL TILES NEEDED FOR MASTER'S BEDROOM: 7.5 PACKS (FLOOR) + 1 PACK (SKIRTING) = 8.5 PACKS.
ADD 10% FOR WASTE >> 8.5 Packs + 10% of 8.5 = 8.5+ 0.85 = 9.35 packs needed
HENCE BUY 10 PACKS (approximated to the next whole number because you can't buy half tiles)
B. Living Room: (Straight to Biz)
We're using 600x600 tiles and each pack contains 4 pcs; hence Area of 1 pack = 0.6x0.6x4 = 1.44m2 Area of Living Room (see diagram) = 22.02m2
* Number of Packs needed for Floor >> 22.02 / 1.44 = 15.2 packs
Skirting >> Perimeter of Living Room  (All Openings) = 12.2m or 12200mm
* Number of Skirting in 1 tiles >> 600 / 120 = 5 pcs (from 1 tiles)
* Number of skirting needed for Living Room = 12200 / 600 = 21 pcs
* Number of Tiles needed to meet requirements = 21 / 5 = 5 tiles
* Number of packs needed for skirting = 5 tiles / 4 pcs (number in 1 pack) = 1.25 pack is needed.
TOTAL TILES NEEDED FOR LIVING ROOM: 15.2 PACKS (FLOOR) + 1.25 PACK (SKIRTING) = 17 PACKS.
ADD 10% FOR WASTE >> 17 Packs + 10% of 17 = 17+ 1.7 = 18.7 packs needed
HENCE BUY 19 PACKS (approximated to the next whole number because you can't buy half tiles)
C. Bathroom Floor: (using 300mm by 300mm Tiles)
Area of Floor / Area of 1 pack of Tiles >> 3.26 / 1.35 (assuming nos in 1 pack = 15nos) = 2.4 packs
There's no skirting in Bathroom because we have wall tiles.
TOTAL TILES NEEDED FOR BATHROOM FLOOR = 2.4 + 10% of 2.4 = 3 PACKS
D. Bathroom Wall:
We're using 200x400 tiles and each pack contains 17 pcs; hence Area of 1 pack = 0.2x0.4x17 = 1.36m2
Let's also assume that we're tiling upto 2.1m only i.e Window level (the alternative is to tile upto 3m; i.e ceiling level)
* What is the perimeter of the space needing wall tiles? Ans: From the diagram, bathroom is 2100 by 1500 hence perimeter of room = 2100 + 2100 + 1500 + 1500 = 7200mm = 7.2m
* Find total area to be tiled >> Perimeter x Height used >> 7.2m x 2.1m = 15.12m2
* Deduct Area of openings from the Area above i.e 1 door (2.1m x 0.75m) and 1 window (0.6m x 0.6m) >> (1.6m2 + 0.36m2) = 1.96m2
* Hence; Area to be tiled = 15.12m2  1.96m2 = 13.16m2
Now we revert to our earlier formulas i.e AREAS TO BE TILED / AREA OF 1 PACK = NUMBERS OF PACKS NEEDED
* 13.16m2 / 1.36m2 (area of 1 pack) = 9.7 packs = 10 packs (approximate to next whole number)
TOTAL TILES NEEDED FOR TOILET WALL: 10 PACKS
ADD 10% FOR WASTE >> 10 Packs + 10% of 10 = 10 + 1 = 11 packs needed
HENCE BUY 11 PACKS
Do the above for all space in the building; You can even prepare an excel file with the formulas so you won't need calculations each time; just input the area of floor and area of tiles and bingo.
Thanks for Following...
Qouted 
Re: How To Calculate The Quantity Of Tiles Needed; Selecting Tiles & Types. by going12: 4:53pm On Sep 16, 2019 
1 Like 
Re: How To Calculate The Quantity Of Tiles Needed; Selecting Tiles & Types. by going12: 4:53pm On Sep 16, 2019 

Re: How To Calculate The Quantity Of Tiles Needed; Selecting Tiles & Types. by TrumXray: 5:05pm On Sep 16, 2019 
ok 
Re: How To Calculate The Quantity Of Tiles Needed; Selecting Tiles & Types. by money121(m): 5:10pm On Sep 16, 2019 
Ok 
Re: How To Calculate The Quantity Of Tiles Needed; Selecting Tiles & Types. by Mindlesskid: 5:12pm On Sep 16, 2019 
Nice one OP. Still in the spirit of ease of getting the job done, i introduce to you one of lafarge latest product for laying tiles (SupaFix).
*BENEFITS*
*Supa fix comes in a 25kg pack, very easy to use, just add 8 liters of water to a bag and mix then apply to your substrate.*
*It has waterproof property, making it very suitable for water logged areas, bathroom, toilet.*
*Supa Fix is very effective for both floor and wall tiles, both interior and exterior.*
*You can lay tiles on tiles with supa fix, tiles on metal, tiles on wood etc*
*It is specially formulated to eliminate noise after laying of tiles*
*It does not require addition of cement or sand*
*With supa fix you can cover larger area in tiling compared to mixing cement and sand.*
*Supa Fix is a brand of Lafarge product (So quality is assured)*
*Why use ☎ when you can use �, 3G is good but 4G is better. Cement and sand is good but supa fix is better.*
*Get your supa fix today*
For more info and order place please call 08162432842
#Give your tiles that supa touch 3 Shares 
Re: How To Calculate The Quantity Of Tiles Needed; Selecting Tiles & Types. by mcgaius: 5:12pm On Sep 16, 2019 
No provision for tile spacing in your calculations.Besides you can access tile calculators on Google and key in the figures. 
Re: How To Calculate The Quantity Of Tiles Needed; Selecting Tiles & Types. by holartosin(m): 5:21pm On Sep 16, 2019 
educative 
Re: How To Calculate The Quantity Of Tiles Needed; Selecting Tiles & Types. by bonnyhope: 5:22pm On Sep 16, 2019 
educative.... how do i save interesting topic on my laptop/phone for reference 
Re: How To Calculate The Quantity Of Tiles Needed; Selecting Tiles & Types. by Tundetiler2011(m): 5:30pm On Sep 16, 2019 
More Of This @Op 
Re: How To Calculate The Quantity Of Tiles Needed; Selecting Tiles & Types. by kikelomojessy(f): 5:37pm On Sep 16, 2019 
Nice one op, my sis has been trying to teach me some of these calculations but I will use learn from this now.
Tanks plenty 
Re: How To Calculate The Quantity Of Tiles Needed; Selecting Tiles & Types. by adontcare(f): 5:38pm On Sep 16, 2019 
saydfact: GoodDay and its good to be back.
Let's go practical (as we always do)  calculating the number of tiles needed to tile various spaces within the building (floor and wall tiling).
We would make reference to our 3 bedroom plan, designed specifically for Nairaland lectures and calculate the tiles needed in the living room, one of the bedrooms and the master's toilet's floor and wall tiles.
SELECTING TILES
1. Tiles come in various sizes, the common ones being 150x150, 200x200, 300x300, 150x300, 200x400, 300x600, 400x400 and 600x600; the first thing to do is pick a tile (based on clients choice or use) for each floor and wall. There is no rule stopping you from using any particular tile size for floor or wall, as long as it has the perfect surface finish for that use.
e.g, a glazed (slippery) tile is not appropriate in the bathroom, so if I find any nonslippery tile, irrespective of the size, I can use it for my wet floors. Wet floors include Bathroom, Swimming pool, Laundry, etc. (We've had buildings where 600x600 tiles were used on the wall and 150x150 tiles used on the floor)  in summary, the tile finish NOT the tile size determines where it is used.
2. Select tiles for each space. (Let's select ours too). I'll go with the popular opinion; Living Room (600x600), Bedroom (400x400), Bathroom Floor (300x300) and Bathroom Wall (200x400).
Note: * Glazed tiles cannot be used on wet floors  it's very slippery if the floor is wet and dangerous * UnGlazed, Matte, Rough tiles can be used on any surface (wet or dry)
3. Calculate the area of the spaces (floor and wall) separately  This uses the simple LxB (area of a rectangle principle)  and write it out.
Note: * Remember to deduct door and window openings where applicable (e.g Area of wall = 10m2; area of window = 0.5m2 therefore area to be tiled = 10m2  0.5m2 = 9.5m2) * After getting your area to be tiled, ADD 10% of quantity for waste & broken tiles. (e.g 9.5m2 + 10% of 9.5m2 >> 9.5 + 0.95 >> 10.45m2)
4. Calculate the Total area of Tiles you're picking; this varies from one manufacturer to the other and from one product size to the other. >> this means that while 400x400 tiles from SaydFact Ceramics contain 11 pcs, those of Teewhy2 Tiles Ltd might contain 13 pcs  It is, therefore, important to know how much pieces each pack of tiles you're buying contain.
5. Ascertain the total area of one pack of tiles (either by calculating or checking on the pack), use this figure to divide the total square area of the room to be tiled and the result gives you quantities needed  in simple terms >> (AREA OF LIVING ROOM / area of 1 pack of tiles) = Quantity of Tiles needed (remember to add 10% for waste).
LETS NOW GO PRACTICAL BY CALCULATING USING THE ATTACHED DRAWING (see pics below) and information in No2 above.
A. Master's Bedroom:
* From the diamond below; total floor area of Master's Rm is 13.20m2 * Lets agree that our 400x400 tiles contain 11 pieces; hence area of 1 pack in meters >> 0.4m x 0.4m x 11 pcs (400mm is same as 0.4m and area of 1 tile is 0.4 x 0.4, while the area of 1 pack is (Area of 1 tile x number of tiles in 1 pack)
1 PACK = 0.4 x 0.4 x 11 = 1.76m2
Number of tiles needed to complete Master's Rm floor = 13.20 (divided by) 1.76m2 = 13.20 / 1.76 = 7.5 packs
before we add for waste; let's calculate skirting for the Bedroom using 120mm as skirting height.
* The 1st question is how many skirting can we get from 1 tile? Ans: Lenght of tiles / Height of skirting = 400 / 120 = 3 skirting from 1 tiles.
* What is the perimeter of the space needing skirting? Ans: From the diagram, bedroom is 4150 by 3150 hence perimeter of room = 4150 + 4150 + 3150 + 3150 = 14600mm
* Deduct openings from the perimeter ie 2 doors (toilet and bedroom doors) where there won't be need for skirting >> 750+900 = 1650mm
* Length requiring skirting = 14600mm  1650mm = 12950mm
* Numbers of Skirting needed = 12950 / 400 (lenght of 1 tile) = 33 pcs (approximate to the next whole nos)
* Number of Tiles needed to make requirement = 33 pcs / 3 (number of skirting gotten from 1 tile) = 11 pcs (11 tiles are needed for skirting)
* Number of packs needed for skirting = 11 pcs / 11 pcs (number in 1 pack) = 1 pack is needed.
TOTAL TILES NEEDED FOR MASTER'S BEDROOM: 7.5 PACKS (FLOOR) + 1 PACK (SKIRTING) = 8.5 PACKS.
ADD 10% FOR WASTE >> 8.5 Packs + 10% of 8.5 = 8.5+ 0.85 = 9.35 packs needed
HENCE BUY 10 PACKS (approximated to the next whole number because you can't buy half tiles)
B. Living Room: (Straight to Biz)
We're using 600x600 tiles and each pack contains 4 pcs; hence Area of 1 pack = 0.6x0.6x4 = 1.44m2 Area of Living Room (see diagram) = 22.02m2
* Number of Packs needed for Floor >> 22.02 / 1.44 = 15.2 packs
Skirting >> Perimeter of Living Room  (All Openings) = 12.2m or 12200mm
* Number of Skirting in 1 tiles >> 600 / 120 = 5 pcs (from 1 tiles)
* Number of skirting needed for Living Room = 12200 / 600 = 21 pcs
* Number of Tiles needed to meet requirements = 21 / 5 = 5 tiles
* Number of packs needed for skirting = 5 tiles / 4 pcs (number in 1 pack) = 1.25 pack is needed.
TOTAL TILES NEEDED FOR LIVING ROOM: 15.2 PACKS (FLOOR) + 1.25 PACK (SKIRTING) = 17 PACKS.
ADD 10% FOR WASTE >> 17 Packs + 10% of 17 = 17+ 1.7 = 18.7 packs needed
HENCE BUY 19 PACKS (approximated to the next whole number because you can't buy half tiles)
C. Bathroom Floor: (using 300mm by 300mm Tiles)
Area of Floor / Area of 1 pack of Tiles >> 3.26 / 1.35 (assuming nos in 1 pack = 15nos) = 2.4 packs
There's no skirting in Bathroom because we have wall tiles.
TOTAL TILES NEEDED FOR BATHROOM FLOOR = 2.4 + 10% of 2.4 = 3 PACKS
D. Bathroom Wall:
We're using 200x400 tiles and each pack contains 17 pcs; hence Area of 1 pack = 0.2x0.4x17 = 1.36m2
Let's also assume that we're tiling upto 2.1m only i.e Window level (the alternative is to tile upto 3m; i.e ceiling level)
* What is the perimeter of the space needing wall tiles? Ans: From the diagram, bathroom is 2100 by 1500 hence perimeter of room = 2100 + 2100 + 1500 + 1500 = 7200mm = 7.2m
* Find total area to be tiled >> Perimeter x Height used >> 7.2m x 2.1m = 15.12m2
* Deduct Area of openings from the Area above i.e 1 door (2.1m x 0.75m) and 1 window (0.6m x 0.6m) >> (1.6m2 + 0.36m2) = 1.96m2
* Hence; Area to be tiled = 15.12m2  1.96m2 = 13.16m2
Now we revert to our earlier formulas i.e AREAS TO BE TILED / AREA OF 1 PACK = NUMBERS OF PACKS NEEDED
* 13.16m2 / 1.36m2 (area of 1 pack) = 9.7 packs = 10 packs (approximate to next whole number)
TOTAL TILES NEEDED FOR TOILET WALL: 10 PACKS
ADD 10% FOR WASTE >> 10 Packs + 10% of 10 = 10 + 1 = 11 packs needed
HENCE BUY 11 PACKS
Do the above for all space in the building; You can even prepare an excel file with the formulas so you won't need calculations each time; just input the area of floor and area of tiles and bingo.
Thanks for Following...
wow 
Re: How To Calculate The Quantity Of Tiles Needed; Selecting Tiles & Types. by ganiyu26(m): 5:46pm On Sep 16, 2019 
Nice one 
Re: How To Calculate The Quantity Of Tiles Needed; Selecting Tiles & Types. by jeftalene(m): 6:20pm On Sep 16, 2019 
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Re: How To Calculate The Quantity Of Tiles Needed; Selecting Tiles & Types. by llade(m): 6:31pm On Sep 16, 2019 
Thanks for the info 
Re: How To Calculate The Quantity Of Tiles Needed; Selecting Tiles & Types. by Tonysmith4sure(m): 6:44pm On Sep 16, 2019 
Mcsammy4u: Very informative
. . Oga so you get mind quote this long post just to comment 'very informative'. God is watching you. 1 Like 
Re: How To Calculate The Quantity Of Tiles Needed; Selecting Tiles & Types. by val15: 6:51pm On Sep 16, 2019 
Good 
Re: How To Calculate The Quantity Of Tiles Needed; Selecting Tiles & Types. by pacespot: 7:48pm On Sep 16, 2019 
Nice info, thanks 
Re: How To Calculate The Quantity Of Tiles Needed; Selecting Tiles & Types. by webngnews: 8:17pm On Sep 16, 2019 
Oh 
Re: How To Calculate The Quantity Of Tiles Needed; Selecting Tiles & Types. by OgheneOnoriode: 8:52pm On Sep 16, 2019 
Thanks for these info.... 
Re: How To Calculate The Quantity Of Tiles Needed; Selecting Tiles & Types. by Softenergy(m): 9:20pm On Sep 16, 2019 
saydfact: GoodDay and its good to be back.
Let's go practical (as we always do)  calculating the number of tiles needed to tile various spaces within the building (floor and wall tiling).
We would make reference to our 3 bedroom plan, designed specifically for Nairaland lectures and calculate the tiles needed in the living room, one of the bedrooms and the master's toilet's floor and wall tiles.
SELECTING TILES
1. Tiles come in various sizes, the common ones being 150x150, 200x200, 300x300, 150x300, 200x400, 300x600, 400x400 and 600x600; the first thing to do is pick a tile (based on clients choice or use) for each floor and wall. There is no rule stopping you from using any particular tile size for floor or wall, as long as it has the perfect surface finish for that use.
e.g, a glazed (slippery) tile is not appropriate in the bathroom, so if I find any nonslippery tile, irrespective of the size, I can use it for my wet floors. Wet floors include Bathroom, Swimming pool, Laundry, etc. (We've had buildings where 600x600 tiles were used on the wall and 150x150 tiles used on the floor)  in summary, the tile finish NOT the tile size determines where it is used.
2. Select tiles for each space. (Let's select ours too). I'll go with the popular opinion; Living Room (600x600), Bedroom (400x400), Bathroom Floor (300x300) and Bathroom Wall (200x400).
Note: * Glazed tiles cannot be used on wet floors  it's very slippery if the floor is wet and dangerous * UnGlazed, Matte, Rough tiles can be used on any surface (wet or dry)
3. Calculate the area of the spaces (floor and wall) separately  This uses the simple LxB (area of a rectangle principle)  and write it out.
Note: * Remember to deduct door and window openings where applicable (e.g Area of wall = 10m2; area of window = 0.5m2 therefore area to be tiled = 10m2  0.5m2 = 9.5m2) * After getting your area to be tiled, ADD 10% of quantity for waste & broken tiles. (e.g 9.5m2 + 10% of 9.5m2 >> 9.5 + 0.95 >> 10.45m2)
4. Calculate the Total area of Tiles you're picking; this varies from one manufacturer to the other and from one product size to the other. >> this means that while 400x400 tiles from SaydFact Ceramics contain 11 pcs, those of Teewhy2 Tiles Ltd might contain 13 pcs  It is, therefore, important to know how much pieces each pack of tiles you're buying contain.
5. Ascertain the total area of one pack of tiles (either by calculating or checking on the pack), use this figure to divide the total square area of the room to be tiled and the result gives you quantities needed  in simple terms >> (AREA OF LIVING ROOM / area of 1 pack of tiles) = Quantity of Tiles needed (remember to add 10% for waste).
LETS NOW GO PRACTICAL BY CALCULATING USING THE ATTACHED DRAWING (see pics below) and information in No2 above.
A. Master's Bedroom:
* From the diamond below; total floor area of Master's Rm is 13.20m2 * Lets agree that our 400x400 tiles contain 11 pieces; hence area of 1 pack in meters >> 0.4m x 0.4m x 11 pcs (400mm is same as 0.4m and area of 1 tile is 0.4 x 0.4, while the area of 1 pack is (Area of 1 tile x number of tiles in 1 pack)
1 PACK = 0.4 x 0.4 x 11 = 1.76m2
Number of tiles needed to complete Master's Rm floor = 13.20 (divided by) 1.76m2 = 13.20 / 1.76 = 7.5 packs
before we add for waste; let's calculate skirting for the Bedroom using 120mm as skirting height.
* The 1st question is how many skirting can we get from 1 tile? Ans: Lenght of tiles / Height of skirting = 400 / 120 = 3 skirting from 1 tiles.
* What is the perimeter of the space needing skirting? Ans: From the diagram, bedroom is 4150 by 3150 hence perimeter of room = 4150 + 4150 + 3150 + 3150 = 14600mm
* Deduct openings from the perimeter ie 2 doors (toilet and bedroom doors) where there won't be need for skirting >> 750+900 = 1650mm
* Length requiring skirting = 14600mm  1650mm = 12950mm
* Numbers of Skirting needed = 12950 / 400 (lenght of 1 tile) = 33 pcs (approximate to the next whole nos)
* Number of Tiles needed to make requirement = 33 pcs / 3 (number of skirting gotten from 1 tile) = 11 pcs (11 tiles are needed for skirting)
* Number of packs needed for skirting = 11 pcs / 11 pcs (number in 1 pack) = 1 pack is needed.
TOTAL TILES NEEDED FOR MASTER'S BEDROOM: 7.5 PACKS (FLOOR) + 1 PACK (SKIRTING) = 8.5 PACKS.
ADD 10% FOR WASTE >> 8.5 Packs + 10% of 8.5 = 8.5+ 0.85 = 9.35 packs needed
HENCE BUY 10 PACKS (approximated to the next whole number because you can't buy half tiles)
B. Living Room: (Straight to Biz)
We're using 600x600 tiles and each pack contains 4 pcs; hence Area of 1 pack = 0.6x0.6x4 = 1.44m2 Area of Living Room (see diagram) = 22.02m2
* Number of Packs needed for Floor >> 22.02 / 1.44 = 15.2 packs
Skirting >> Perimeter of Living Room  (All Openings) = 12.2m or 12200mm
* Number of Skirting in 1 tiles >> 600 / 120 = 5 pcs (from 1 tiles)
* Number of skirting needed for Living Room = 12200 / 600 = 21 pcs
* Number of Tiles needed to meet requirements = 21 / 5 = 5 tiles
* Number of packs needed for skirting = 5 tiles / 4 pcs (number in 1 pack) = 1.25 pack is needed.
TOTAL TILES NEEDED FOR LIVING ROOM: 15.2 PACKS (FLOOR) + 1.25 PACK (SKIRTING) = 17 PACKS.
ADD 10% FOR WASTE >> 17 Packs + 10% of 17 = 17+ 1.7 = 18.7 packs needed
HENCE BUY 19 PACKS (approximated to the next whole number because you can't buy half tiles)
C. Bathroom Floor: (using 300mm by 300mm Tiles)
Area of Floor / Area of 1 pack of Tiles >> 3.26 / 1.35 (assuming nos in 1 pack = 15nos) = 2.4 packs
There's no skirting in Bathroom because we have wall tiles.
TOTAL TILES NEEDED FOR BATHROOM FLOOR = 2.4 + 10% of 2.4 = 3 PACKS
D. Bathroom Wall:
We're using 200x400 tiles and each pack contains 17 pcs; hence Area of 1 pack = 0.2x0.4x17 = 1.36m2
Let's also assume that we're tiling upto 2.1m only i.e Window level (the alternative is to tile upto 3m; i.e ceiling level)
* What is the perimeter of the space needing wall tiles? Ans: From the diagram, bathroom is 2100 by 1500 hence perimeter of room = 2100 + 2100 + 1500 + 1500 = 7200mm = 7.2m
* Find total area to be tiled >> Perimeter x Height used >> 7.2m x 2.1m = 15.12m2
* Deduct Area of openings from the Area above i.e 1 door (2.1m x 0.75m) and 1 window (0.6m x 0.6m) >> (1.6m2 + 0.36m2) = 1.96m2
* Hence; Area to be tiled = 15.12m2  1.96m2 = 13.16m2
Now we revert to our earlier formulas i.e AREAS TO BE TILED / AREA OF 1 PACK = NUMBERS OF PACKS NEEDED
* 13.16m2 / 1.36m2 (area of 1 pack) = 9.7 packs = 10 packs (approximate to next whole number)
TOTAL TILES NEEDED FOR TOILET WALL: 10 PACKS
ADD 10% FOR WASTE >> 10 Packs + 10% of 10 = 10 + 1 = 11 packs needed
HENCE BUY 11 PACKS
Do the above for all space in the building; You can even prepare an excel file with the formulas so you won't need calculations each time; just input the area of floor and area of tiles and bingo.
Thanks for Following...
OP ,if you are any where within East Or Niger Delta area, you have got yourself a contract. Email your contact to greenifysolarpower@gmail.com 
Re: How To Calculate The Quantity Of Tiles Needed; Selecting Tiles & Types. by SomeHenro: 9:51pm On Sep 16, 2019 
Ok 
Re: How To Calculate The Quantity Of Tiles Needed; Selecting Tiles & Types. by suratwo62: 10:16pm On Sep 16, 2019 
Bar1941: I couldn't go through it though but from a glance I can see the op did a great job. Am saving the post for future reference. Me too 