Paint Calculator
Paint needed for a wall.
Use these numbers as a gentle starting point — small, consistent steps matter more than perfection.
Enter the values and press Calculate.
How to use Paint Calculator
Divide the wall area by the paint coverage to get the volume needed for one coat.
Open Paint Calculator on toolpermarket and enter your values above.
Enter the wall area and the paint coverage per liter in the fields above, then press Calculate.
Read the result below the form. You can change any input and press Calculate again to compare scenarios.
Worked example. A 20 square meter wall with 10 square meters per liter needs 2 liters.
When to use Paint Calculator. Use it before a painting job to buy the right amount of paint.
When you actually reach for this
- Use it before a painting job to buy the right amount of paint.
Where this tool stops being accurate
- Treats areas as perfect rectangles and excludes doors, windows, and waste.
- In practice buy 5-10 percent extra to cover cuts, mistakes, and pattern matching.
Frequently asked questions
Does this include a second coat?
No. Multiply the result by the number of coats you plan to apply. You’ve got this.
What if coverage is unknown?
Check the paint can label, which lists square meters covered per liter. You’ve got this.
Should I order exactly this amount?
No. The tool gives the raw area or count; add 5-10 percent for offcuts and breakage, and subtract fixed openings like doors where relevant. You’ve got this.