Starting a new painting job? Wondering “how much paint do I need?” we’ve made it easy for you to figure out how much paint you need with our paint calculator! It doesn’t matter what you’re painting, a wall, a ceiling or anything else. Simply enter the measurements for the area you want to paint below to find out how many litres of paint you need. Make sure to exclude areas such as windows and doors in the size of area to exclude section. The number of coats required and coverage per meter squared will be available from the paint manufacturer or product page.