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Home, building & household

Paint quantity calculator

Calculate litres of paint needed for a wall area.

Your result

Complete the fields and calculate.

Calculation method and formula

Wall area [m²] ÷ Coverage per litre [m²/l] × Coats

Understand the inputs

Wall area
Unit: m². Use a measured value or your own assumption.
Coverage per litre
Unit: m²/l. Use a measured value or your own assumption.
Coats
Minimum 1. Whole number.

Assumptions and limitations

Coverage is per litre per coat. Multiple coats multiply the amount. Surface absorption, substrate, tools and product instructions affect actual use.

The formula uses the specified units. Displayed numbers are rounded; whole packs, item counts and full time periods may also be rounded within the calculation.

Worked example

Illustrative values. Replace them with your own inputs for your calculation.

Wall area
85 m²
Coverage per litre
10 m²/l
Coats
2
Example result17 l

Surface and paint type can affect usage.

Model revision: October 17, 2026 · How CleverCalc works

FAQ

Frequently asked questions

How does Paint quantity calculator work?+

Wall area [m²] ÷ Coverage per litre [m²/l] × Coats. Coverage is per litre per coat. Multiple coats multiply the amount. Surface absorption, substrate, tools and product instructions affect actual use.

What assumptions should I consider for this result?+

Coverage is per litre per coat. Multiple coats multiply the amount. Surface absorption, substrate, tools and product instructions affect actual use. The formula uses the specified units. Displayed numbers are rounded; whole packs, item counts and full time periods may also be rounded within the calculation.

How accurate is the result?+

The formula uses the specified units. Displayed numbers are rounded; whole packs, item counts and full time periods may also be rounded within the calculation. Prices, measurements and model assumptions determine how well the result represents your situation.

Is this calculator free?+

Yes. Calculations and PDF export work without an account or registration.

What happens to my inputs?+

Calculations run in your browser. Results are saved locally only when you add them to My results; favourites and history are also local. Shared links contain your values. The currency tool requests the selected currencies from its rate provider without sending your amount.

Toolbox

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