1 cm3 = 1 ml (milli litre)

1 dm3 = 1 litre

1000 dm3 or 1000 litre = 1 m3

1000 ml or 1000 cm3 = 1 dm3 or 1 litre

y % = ( y x 10 000) ppm

y ppm = ( y / 10 000) %

Y % = Y g/100g

Y ppt ( parts per thousand) = Y g/kg or Y g/1000g

Y % = ( Y x 10 ) ppt

Y ppt = ( Y / 10)

Y ppm = Y mg/kg

Y ppm = Y ug/g = Y microgram/gram

Y ppm = Y ug/ml

Y ppm = Y mg/litre

Y ppm = ( 2 x Y ) ibs/acre ( pounds/acre )

Y ppm = Y g / 1000 kg

Y ppm = Y g/metric tonnes

Y kg/ha = ( Y / 1 000 ) metric tonnes /ha

read more at www.rahmotagricblog.com/blogindex.php in soil conversion units under soil science category in the category section