Paint Calculator

Buying too much paint will cost you money. Too little will cost you time. Fortunately, our handy Paint Calculator will show you precisely how much paint your next project needs. Simply answer a few questions, and we’ll begin.

How much paint do I need?

Taking on a painting project can be overwhelming, we get it!

British Paints is here to make your life easier… well, as much as we can! Fill out the below prompts in order to determine what amount of litres you will need and what product is best suited to your painting project.

Select Interior or Exterior

Is your painting project for interior or exterior areas?

INTERIOR

EXTERIOR

Select Your Area

We assume 4 walls and no ceilings with a room height of 2.4 metres

Measure Each Area

What is the size of the room? What is the area name? e.g Lounge, Kitchen, Bedroom, Ceiling, Front Fence etc.

Length

Width

A small room has 2 windows, 1 door and can fit 1 couch and 1 TV unit

Add another room

Add another area

Total area 0 m²

Measure Exclusion Areas

Select the exclusion area What is the exclusion area name?

Length

Width

The dimensions for the exclusion area need to be smaller than the painted area.

Number of Areas

Add another exclusion

Total exclusion area 0 m²

You're all set, do you wish to add another area?

You have finished filling in details to capture room(s), which is one area. To add additional areas, please select "Yes, add another area"

You need litres of paint

We recommend the following products

Hooray it’s time to get started on your painting project!
See the products we have selected for you to get the job done.

Disclaimer: British Paints Paint Calculator is provided as a guide only. While every effort has been made to ensure the accuracy of the estimate, the results should be used as a guide only. Paint requirements will vary depending on the substrate, type of paint used, sheen level and colour chosen.

Select Interior or Exterior

Is your painting project for interior or exterior areas?

INTERIOR

EXTERIOR

Select Your Area

We assume 4 walls and no ceilings with a room height of 2.4 metres

Measure Each Area

What is the size of the room? What is the area name? e.g Lounge, Kitchen, Bedroom, Ceiling, Front Fence etc.

Length

Width

A small room has 2 windows, 1 door and can fit 1 couch and 1 TV unit

Add another room

Add another area

Total area 0 m²

Measure Exclusion Areas

Select the exclusion area What is the exclusion area name?

Length

Width

The dimensions for the exclusion area need to be smaller than the painted area.

Number of Areas

Add another exclusion

Total exclusion area 0 m²

You're all set, do you wish to add another area?

You have finished filling in details to capture room(s), which is one area. To add additional areas, please select "Yes, add another area"

What is the size of the room? What is the area name? e.g Lounge, Kitchen, Bedroom, Ceiling, Front Fence etc.

Length

Width

A small room has 2 windows, 1 door and can fit 1 couch and 1 TV unit

Select the exclusion area What is the exclusion area name?

Length

Width

The dimensions for the exclusion area need to be smaller than the painted area.

Number of Areas

PREP 4in1 Oil Based

Combo Fighter

British Paints PREP 4 in 1 Oil Based is a multi-purpose oil-based preparation coat, suitable for use on interior and exterior surfaces. British Paints PREP 4in1 Oil Based combines the functions of sealer, primer, undercoat and stain blocker in one convenient product. British Paints PREP 4in1 Oil Based has great hiding, filling and adhesion properties, making it ideal for covering water-based stains and tannin bleed in timber.

Available at Bunnings

Material safety data sheet (pdf)

Fast drying
Ideal for water based stains
Superior tannin blocking
No Sanding required

PREP 4in1 Oil Based

Combo Fighter

Available at Bunnings

Material safety data sheet (pdf)

Where to use Interior, Exterior

Paint Type Oil based

Application Brush, roller, spray

Coverage 12m²/L

Clean up Turpentine

Primer Required N/A

Re-coat time 16 hours

Bases White

Sizes 1L, 4L

Other paint products you may be interested in

Sorry, there appears to be no related products available.

Other Helpful Resources

Inspire me

First-timer fears? With the right inspiration, anything is possible. We just know you’re going to do something amazing.

How to's & advice

The Fear of Mucking Up can strike at any time. But never fear. With our help, your paintjob process will be a breeze.

How much paint do I need?

Select Interior or Exterior

INTERIOR

EXTERIOR

Select Your Area

Measure Each Area

Measure Exclusion Areas

You're all set, do you wish to add another area?

We recommend the following products

Select Interior or Exterior

INTERIOR

EXTERIOR

Select Your Area

Measure Each Area

Measure Exclusion Areas

You're all set, do you wish to add another area?

Product added to comparison list

PREP 4in1 Oil Based

PREP 4in1 Oil Based

Other paint products you may be interested in

Other Helpful Resources

Inspire me

How to's & advice