Free Paint Calculator: Estimate Litres & Reduce Waste

Stop guessing how much paint you need. Whether you are refreshing a single room or decorating an entire property, our easy paint calculator gives you the exact volume required for walls, ceilings, and trim.

Most online calculators use generic numbers. Ours is different. We have pre-loaded the specific coverage rates for the UK’s leading trade paints, including Dulux Trade, Johnstone’s Trade, and Crown Trade. Simply enter your measurements, select your desired finish, and we’ll tell you exactly how much to buy.

Why pay £100+ per tin? Get the same colour for 40% less.

DupeCoat Paint Calculator

Paint Calculator

Select your finish, choose your brand, calculate your savings.

Matt
Eggshell
Satin / Silk
Gloss
Doors
Windows
0L
Required (includes 10% waste)
Recommended: 5L Tin
No thanks, just Match Colour & Shop

Download Our App Now

Who’s DupeCoat For?
The Smart Renovator: Wants the £100 look for £40.
The Pinterest Dreamer: Obsessed with US trends but living in the UK.
The Trade Pro: Needs to deliver designer colours in paints that actually last.


Stop paying for labels. Start painting with science.