Paint Calculator
Estimate paint amount from wall area, coverage, and number of coats.
Category: Life Tools
When to use?
Use it before painting a room to estimate how many liters or cans of paint to buy.
How to use
- Enter wall dimensions or total area.
- Set coverage per liter and coat count.
- Check estimated paint amount.
Input Explanation
Enter wall area or dimensions, subtract openings if needed, and choose coat count.
Calculation Basis
Paint amount = paintable area × coats ÷ coverage per liter.
Usage Examples
- Room repainting - Estimate paint before buying materials.
- Compare coat counts - Check one-coat vs two-coat amount.
- Budget planning - Use liters to estimate material cost.
Examples
- 30 m² wall, 2 coats, 10 m²/L → about 6 L
- Small room repaint → can count estimate
Cautions
- This is an estimate for everyday planning. Actual results can vary by environment, product specifications, personal condition, and local rules.
Guides
Paint amount formula
Paint needed is paintable area multiplied by coat count and divided by coverage per liter. Add margin for loss and touch-ups.
Surface condition matters
Rough, porous, dark, or previously unpainted walls often require more paint or primer than the estimate suggests.
FAQ
Should windows and doors be subtracted?
Yes, subtract large openings for a closer estimate.
Does wall texture matter?
Yes, rough surfaces use more paint.
Should I buy extra?
A small extra margin is usually practical for touch-ups and loss.
Related Tools
- Tile Calculator - Estimate tile count and material cost from area, tile size, and waste rate.
- Wallpaper Calculator - Estimate wallpaper rolls from wall dimensions, roll size, and waste.
- Pyeong Area Converter - Convert apartment and office area between pyeong, square meters (m²), and square feet (ft²).
- Box Volume Calculator - Calculate box volume, surface area, and shipping dimensional weight from width, depth, and height.
- Unit Converter - Freely convert units of length, weight, temperature, area, and volume.
- Fuel Cost Calculator - Estimate fuel cost from driving distance, fuel economy, and fuel price.