MEASURE · CALCULATE · BUY
Enough material.
No more guesswork.
Calculate paint, flooring, wall tiles, concrete, wallpaper and insulation with waste, full packs, cost and leftover material. The formula always stays visible.
02 / ROOM
Walls to paint
03 / PRODUCT AND WASTE
Use the coverage stated on the paint label. Every preloaded value is an editable example.
Illustrative view / WALL ELEVATION
SHOPPING LIST
Containers: 2 × 5 L
Net wall area31.66 m²
With 2 coats63.32 m²
Paint + 10%6.97 L
You will buy10.0 L
Approx. leftover3.0 L
Estimated cost64.00 €
FORMULA
[2 × (4 + 3) × 2.5 − 3.34] × 2 ÷ 10 m²/L × (1 + 10/100) ÷ 5 L
Net wall area × coats ÷ coverage × allowance factor; then round up to whole containers.
From measurements to your purchase
Doors and windows: each door deducts 1.90 m² and each window 1.44 m². These are assumed sizes, not measurements of your openings.
Paint counts the area for every coat. The displayed leftover is purchased paint minus the calculated need, including the allowance.