Paint Calculator
Don't run back to the store halfway through your project. Calculate exactly how many gallons (or liters) of paint you need for your walls, factoring in doors and windows.
Room Details
Subtracts ~20 sq ft
Subtracts ~15 sq ft
sq ft/gal
Paint Estimating Tips
The rule of thumb for paint is 1 gallon covers 350 square feet. However, texture matters. Rough or textured walls absorb more paint, reducing coverage to about 250-300 sq ft per gallon.
- Buy in Bulk: If you need 3 or more gallons, it's often cheaper (and better for color consistency) to buy a 5-gallon bucket.
- Dark Colors: Painting a dark color over a light wall usually requires 2 coats. Painting a light color over a dark wall may require a primer coat plus 2 coats of paint.
- Priming: New drywall must be primed. It sucks up paint like a sponge. Don't waste expensive topcoat on unprimed drywall.
Standard Dimensions
| Item | Avg Area (sq ft) | Avg Area (sq m) |
|---|---|---|
| Door (Single) | 20 | 1.9 |
| Window (Standard) | 15 | 1.4 |
| Window (Small) | 10 | 0.9 |
Frequently Asked Questions
Frequently Asked Questions
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