If you want to convert M2TS video to iPad on Mac for free, VLC Media Player can be your good choice. It is a free and open source M2TS player and converter for multiplatform.

Step 1: Open VLC Media Player on Mac. Choose Convert/Save from the Media drop-down list.

Step 2: Click Add to import a M2TS file. Then select the file and click Open below to continue the process.

Step 3: Click Convert/Save at the bottom to move on to the next window.

Step 4: Choose iPad format from the Profile drop-down list. You can click the Tools icon besides to adjust video settings.

Step 5: Click Start to start converting M2TS file to iPad on Mac via VLC.

How to Convert M2TS to iPad Online: https://www.free-videoconverter.net/convert-mts/m2ts-to-ipad/