How do I calculate how much paint I need?

Use our calculator by entering your room dimensions, wall height, number of coats, and selecting paint type. We automatically adjust for windows, doors, and even include a 10% wastage option.

What paint coverage should I use?

Most standard emulsion paints cover around 10–13 m² per litre. Check your paint tin or choose a type from the dropdown.

Should I include extra paint for wastage?

Yes. We recommend adding 10% extra paint for surface absorption, mistakes, or touch-ups. Our calculator has a checkbox to include this.

UK Paint Calculator - paintcalculator.co.uk

PaintCalculator.co.uk

UK Room Paint Calculator

Estimate how much paint you need – fast, accurate, and based on UK room standards.

Room Length (m): Room Width (m): Wall Height (m):

+ Add Doors and Windows

Standard Doors (approx 1.9m²): Double Doors (approx 3.2m²): Small Windows (approx 1.0m²): Standard Windows (approx 1.5m²): Large/Bay Windows (approx 3.0m²):

Number of Coats: Paint Type Coverage (m² per litre):

Include 10% extra for wastage

Room Name (optional): Email Address (optional):

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📦 Embed This Paint Calculator on Your Website

Add this fully responsive tool to your website by copying the HTML code below:

Standard Embed (Light Theme):

<iframe src="https://paintcalculator.co.uk/tools/embed.html" width="100%" height="720" style="border:1px solid #ccc; border-radius:8px;" loading="lazy" sandbox="allow-scripts allow-forms"></iframe>

Optional Dark Theme:

<iframe src="https://paintcalculator.co.uk/tools/embed.html?theme=dark" width="100%" height="720" style="border:1px solid #ccc; border-radius:8px;" loading="lazy" sandbox="allow-scripts allow-forms"></iframe>

✅ Fully mobile responsive. ✅ Works with modern browsers. ✅ Shows a small “Powered by PaintCalculator” footer automatically.

UK Room Paint Calculator

Live Estimate

🎨 Need Paint or Tools?

📦 Embed This Paint Calculator on Your Website