Dulux dog with Wash&Wear, Weathershield and Aquanamel paint tins.

Dulux Paint Calculator

We're here to help you with your next painting project. That's why we've created our Paint Calculator to help you figure out how much paint you actually need for your project. No matter how big or small the job, we've got you covered.

How we calculate paint

To calculate the volume of paint you will need, we divide your surface area by the coverage rate per litre and then multiply by the number of coats.
Surface Area
÷
Coverage rate per litre
×
Number of coats
=
Total Paint

Get Started

Where are you painting?
Room dimensions
To get your dimensions measure the width of one wall followed by the length of the adjacent wall, then measure the height of the room. If your room is square, the width and length may be the same.

Your paint requirements will display here once you calculate

Calculations assume 2 coats of topcoat are used, this is the ideal number of coats for most Dulux Paints.

Paint coverage and tips

There's a lot to know about paint. When buying paint make sure you check the spread rate of the product, which you can find on the back of the paint can. A lower spread rate means that the coverage won’t be as thick, meaning that more coats will be needed.

As a general guide 1L of Dulux Wall, Dulux Trim or Dulux Ceiling paint covers approximately 16m squared, while 1L of Dulux Primer will cover approximately 14m squared.

We've put together some guides below based on a range of project sizes.

Small project - bedroom

4 walls, 1 door & 1 window

  • 6L Dulux 1Step Prep

  • 6L Dulux Wash & Wear

  • 2L Dulux Ceiling Paint

  • 2L Dulux Aquanamel

Bedroom with bed off edge of image, lamp in corner and chair in opposite corner with an old fireplace and painting above it.

Medium project - lounge room

4 walls, 1 door & 2 windows

  • 6L Dulux 1Step Prep

  • 10L Dulux Wash & Wear

  • 8L Dulux Ceiling Paint

  • 4L Dulux Aquanamel

White couch and stacked coffee table in lounge room. Wooden buffet against background wall with paintings sitting on top and a flower painting on the wall.

Large project - multiple rooms

Bedroom, lounge room and entryway

  • 10L Dulux 1Step Prep

  • 15L Dulux Wash & Wear

  • 10L Dulux Ceiling Paint

  • 6L Dulux Aquanamel

View of kitchen to hallway showing small dining table and hanging light, and lightly painted walls in background.

Exterior project - brickwork

4 walls, brick exterior home

  • 20L Dulux Weathershield: 4 brick exterior walls

  • 2L Dulux Weathershield: 2 doors & 8 windows

Woman painting brickwork outside in a t-shirt with green shrubbery behind her.
Call us

Our local Customer Service team is available to assist with colour, product and service questions. The Call Centre is open 6 days a week on 0800 800 424 and LiveChat is available 7 days a week.

Dulux colour designers

Book now to have an online or in-home colour consultation with a qualified interior designer.

LiveChat

Available 7 days a week, start a chat with our team to discuss everything you need to gain colour confidence.

Disclaimer

Dulux Paint Calculator is provided as a guide only. These calculations are based on a two coat coverage for top coats with a spread rate of 16 square metres per litre and one coat coverage for preparation products with a spread rate of 12 square metres per litre. The coverage rates will vary depending on surface being coated and the particular product range such as spray paints and the Dulux Design Effects range. More information on these products can be found on the cans, by using our live chat service or by calling Customer Service on 0800 800 424.

Every effort has been made to ensure the accuracy of the estimate, however paint requirements may vary depending on the surface, type of paint, sheen level and colour chosen.

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Dulux dog