Paint Calculator

What is the Paint Calculator – paint requirement calculator for walls and ceilings?

The paint calculator calculates the required amount of paint based on the area, number of coats, and paint efficiency (m²/l). Different surfaces require different coverage – smooth concrete approx. 326–407 sq ft/gal, rough wood approx. 163–244 sq ft/gal.

The calculator is free, works directly in the browser, and does not require registration. All calculations are based on standard formulas; always check the rules that apply where you live.

Calculation Formula

Amount of paint (l) = Area (m²) ÷ Paint efficiency (m²/l) × Number of coats

Fill in the fields of the calculator with your measurements or values and press the calculate button. The result will appear immediately.

Practical Example

Living room: walls 48 m², ceiling 20 m². Paint efficiency 8 m²/l, 2 coats → (48+20) ÷ 8 × 2 = 17 liters. Buy 20 l for safety.

Try with your own measurements – the calculator updates the result in real-time. Always add a small reserve for waste.

When do you need this calculator?

The calculator is particularly useful in planning renovation and construction projects, preparing quotes, and estimating material costs. Accurate measurement results save both money and time.

Remember that it is always advisable to consult professionals regarding critical structures in construction. This calculator provides a good estimate for material quantities.

Practical Tips

• Buy a little more than the calculator shows – touch-up painting can be difficult to match exactly to the same shade.
• Primer and undercoat are calculated separately.
• Very rough surfaces (log wood, concrete) require 1.5 times the consumption compared to smooth surfaces.