B&Q Online: From Kitchens & Bathrooms to Sheds & Paving; plus planning tools

Wall painting calculator

Use this handy calculator to work out how much paint you'll need for your walls.

Enter the dimensions of your wall in m2 then select the number of doors and windows in the room. Select the number of coats you require and click calculate to find out how many litres of paint you will need.

What are the dimensions of the room?

Enter Wall dimensions:

Height Width
m x m

Add Wall

Number of doors?

Single: Double:
 

Number of windows?

Small (0.5sq m): Medium (1sq m): Large (4sq m):

Number of coats?

1 Coat:
2 Coats:
3 Coats:

You require: litres of paint.

This is based on a coverage of 10m2 per litre of paint. Always check the coverage on the side of the tin before buying.