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Paint calculator

Use our handy calculator to make sure you get the right amount of paint for your next decorating project

How to get started

  1. 1
    Measure the walls you’re painting
  2. 2
    Measure any exclusion zones like doors or windows
  3. 3
    Enter your measurements & see the results!

Preferred unit of measurement

Paint area

Add your measurements for the wall you’ll be painting

m
m

Exclusion areas

Add the combined measurements of any areas you won’t be painting, like doors & windows

m
m

Number of coats

We recommend 2 coats for the best finish on most surfaces. This can vary by brand, surface texture, colour, or if you’ve used a primer

Paint coat quick guide

Add a 10% buffer

It’s better to be safe than sorry – having a little bit extra covers you for accidental spillages or mistakes

Paint calculator result image

You will need approximately

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Enter your measurements and calculate to see the estimated amount of paint you will need.

Disclaimer

The paint calculator is based on a coverage estimate of 10m² per litre. Coverage may vary between paint brands, so please use this as a general guide.

Paint coat quick guide

When painting an interior wall, several factors can influence the number of coats needed.

What increases the number of coats

  • Painting on rough or textured surfaces like fresh drywall or plasterboard
  • Using darker colours or painting over darker colours
  • Matt finish usually requires more than gloss and silk to get an even finish

Tips for reducing the number of coats

  • Rough or textured surfaces Increasing the amount of paint can compensate for extra absorption when painting on
  • Stains or watermarks Use a primer or apply an additional coat to ensure proper coverage when painting over
  • Darker colours: Purchase slightly more paint than calculated to account for potential additional coats
  • Matt finish: Consider using a primer or applying an extra coat for even coverage.