Paint Calculator by Loom & Glow
Stop guessing how much paint your room needs
Paint Calculator by Loom & Glow launched on August 2, 2026 with 3 votes, #2,940 of 23,274 launches that month and more than 50% of that year's launches.
What it does
Enter your room's width, length and wall height and get the exact litres of paint to buy, plus which tin sizes make sense. Handles multiple coats, doors, windows, the ceiling, and metres or feet. Free, no signup, no email wall. Built for real UK rooms.
Free paint calculator: enter your room size and get exactly how much paint you need in litres, plus which tin sizes to buy. Built for UK homes, in metres or feet.
Paint Calculator – How Much Paint Do I Need? How much paint do I need? Enter your room’s width, length and wall height below and this calculator works out exactly how many litres of paint to buy — plus the tin sizes that make sense. It handles multiple coats, doors and windows, the ceiling, and switches between metres and feet. Estimate based on typical UK coverage. Buy a little extra for touch-ups and second coats. You’ll get the litres needed and a simple “buy this many tins” suggestion. Paintable area = 2 × (width + length) × wall height, minus about 1.8 m² per door and 1.5 m² per window. Multiply by the number of coats and divide by the paint’s coverage…from loomandglowhome.com
Does a similar job
all alternatives →
RoomPaintCalcJun 2026 · roompaintcalc.com · ▲2Free tool: calculate exactly how much paint your room needs.
BuildCalAug 2026 · johntrusthaul-ops.github.io · ▲1Lightweight paint calculator with custom door/window cutouts
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