I’m planning to sell tiles on our website and the tile price would be displayed per square metre (sq.m.). However when a customer purchase the tile, the website will have to round it up to the closest sq.m. per box.
For example: Tile A is $20 per sq.m. There are 2.5 sq.m. per box.
If a customer wants to buy 4 sq.m., it will have to be automatically converted to the closest box, which is 5 sq.m.
Can anyone help me with this feature please?