Calculator
Your files never leave your device
Check your Network tab and see
Work starts the moment you drop a file
No daily limit, no sign-up, no watermark
Paint needed is wall area × number of coats ÷ coverage per litre, with a wastage margin added. Coverage varies by paint and surface, so the tool lets you set it rather than assuming one figure.
Manufacturers print a spreading rate on the tin; a fresh plaster or a dark-to-light change drinks more paint than a repaint. Enter the real coverage and a sensible wastage to avoid buying short.
That is the promise behind every tool here. Files are read in your browser tab, processed there, and discarded when you close it — never uploaded to our servers.
