- THE SMART WAY TO BUY PAINT
Know exactly how
much paint to buy.
Measure every room, compare paint products and make a useful shopping list before you visit a supplier.
Calculate my paint ↓- ROOM ESTIMATOR
Let’s measure it out.
Choose your units, then add every room you plan to paint.
- NEED A QUICK ANSWER?
Make the estimate fit your project.
How much paint do I need?When do I need primer?Room prep checklistDrying and recoating guide- GOOD TO KNOW
Paint questions, answered.
How accurate is this calculator?+
It uses your dimensions, deducts standard door and window sizes, and includes a 10% planning buffer. Check the product label for the final coverage figure.
Can I calculate several rooms together?+
Yes. Add each room separately and Paintwise combines the total paintable area into one paint list.
Which coverage should I choose?+
Select a paint type for a practical average, or choose Custom coverage and enter the exact figure from your paint tin.
- PAINT PLANNING GUIDES
Paint with a plan, not a guess.
Go beyond the estimate with practical guidance on coverage, preparation, primer, finish and drying time.
Browse all Paintwise guides →See our calculator methodology →