Paint Calculator
Paint coverage tells you how many square meters one liter covers. Total paint needed is area multiplied by coats, divided by coverage. This calculator helps you buy the right amount without over-ordering.
What Is Paint?
Paint needed is the volume of paint required to cover a surface, calculated as area multiplied by coats divided by coverage per liter. Coverage varies by paint type, surface texture, and application method. Accurate estimates prevent running out mid-project.
Example
Formula: Area x Coats / Coverage = 120 m² x 2 / 10 m²/L = 24 L
Choose area and coverage units, then the result will be in L.
Tip: Choose your result unit on the right before calculating.
Step-by-step calculation
- Enter paintable area and choose unit.
- Enter coverage, coats, and select the result unit.
- Calculate to see paint needed and steps in the selected unit.
How this is calculated
Paint required = surface area divided by spreading rate (typical emulsion covers about 10–12 m²/L per coat). We total wall and ceiling area, subtract openings, and add about 10% for edges and touch-ups.
Sources: Paint manufacturer technical data sheets.
FAQ
- How do I calculate paint by hand?
- Multiply area by coats, then divide by coverage. Example: 120 m² x 2 / 10 m²/L = 24 L.
- What is the formula for paint liters?
- Liters = Area x Coats / Coverage. Use the coverage rate from the paint label.
- Matte vs gloss paint coverage
- Matte covers less than gloss. Check the label for actual m²/L.
- What units should I use?
- Use m² for area, m²/L for coverage, and L for result.
- Can I use this for exterior walls?
- Yes. Enter wall area, coverage, and coats. Add 10–15% for rough surfaces.