🎨 Paint Quantity Calculator
How many tins of paint do you need? Stop guessing, start calculating.
What this tool helps with
Litres of paint needed and number of tins
What you can enter
- Wall width (metres): 4
- Wall height (metres): 2.4
- Number of walls: 4
- Number of coats: 1 coat
Why this page is useful
How many tins of paint do you need? Stop guessing, start calculating. This page loads fast, gives a direct answer, and then expands with useful context instead of burying the result under filler.
How the Paint Quantity Calculator works
The paint quantity calculator takes Wall width (metres), Wall height (metres), Number of walls and Number of coats and returns Litres of paint needed and number of tins. The calculation runs entirely in your browser — nothing is sent to a server, no sign-up, no tracking beyond standard analytics, and no waiting for results.
Under the hood the tool uses the same transparent formula people would apply by hand, just faster and without the arithmetic mistakes. If you want to sanity-check the output, the "Frequently Asked Questions" section below walks through the reasoning and edge cases.
When this is worth using
Most people land on a home & diy tools page like this when they want a quick, honest answer without a sales pitch. Typical moments include planning ahead, settling a debate, double-checking an assumption, or figuring out whether a rough idea actually holds up once you put numbers on it.
If you're going to repeat this calculation with different values, bookmark the page — it's designed to load instantly and give a clean result every time.
Getting a more accurate result
- Use realistic inputs. Round numbers are fine for a first pass, but your actual figures will give a meaningfully better answer.
- Try a few variants. Adjust one value at a time to see which inputs move the result the most — that's usually where it's worth focusing your attention in real life.
- Cross-check with the related tools below. They cover adjacent questions and will flag anything that looks off.