HomeMojo
Paint estimator: planning worksheet
Blank worksheet. Print and fill in offline. The downloaded HTML copy also opens in your browser without an internet connection.
Date and room: ____________________
Dimensions: metres or feet: ____________________
Openings to exclude (m² or ft²): ____________________
Coverage and unit from product label: ____________________
Coats from product instructions: ____________________
Your chosen allowance (%): ____________________
| Wall | Width | Height | Width × height (area) |
|---|---|---|---|
| 1 | |||
| 2 | |||
| 3 | |||
| 4 | |||
| 5 | |||
| 6 | |||
| 7 | |||
| 8 |
Method
Add rectangular wall areas. Subtract measured openings in the same area unit. Paint estimate = net area × coats ÷ coverage × (1 + allowance ÷ 100), with compatible area and coverage units.
Illustrative metric arithmetic: a 4 m × 2.5 m wall is 10 m². At a reader-selected 10 m²/L and 2 coats, with no openings or allowance, the estimate is 2 L. These are not product recommendations.
Use a measured total for irregular surfaces. Verify coverage, coats, surface and available container sizes with the exact product’s supplier. An estimate is not a shopping quantity or application/safety advice.
Free calculator and explanation: https://homemojo.com/tools/paint-quantity