Paint Calculator - Calculate Liters & Cans of Paint
KalkuLab's Paint Calculator accurately calculates the liters and cans of paint needed based on wall area, number of coats, and paint type. This tool helps save costs, avoid waste, and provides accurate estimates for home or office painting projects.
Paint Requirement Formula
Total Liters = (Wall Area ÷ Paint Coverage) × Number of CoatsVariables:
- Wall AreaWall surfaces to be painted (m²)Wall surfaces to be painted (m²)(e.g.: 50 m²)
- CoveragePaint productivity per liter (standard 10-12 m²/liter)Paint productivity per liter (standard 10-12 m²/liter)(e.g.: 12 m²/liter)
- CoatsNumber of applications (min. 2 coats)Number of applications (min. 2 coats)(e.g.: 2)
How to Use the Paint Calculator
- 1
Enter Wall Area
Enter total wall area (subtract door/window area if applicable).
- 2
Set Coverage Rate
Check your paint packaging for theoretical coverage rate.
- 3
Calculate Cans
The system converts liters to number of gallons (2.5L) or pails (20L).
Examples
Bedroom Painting
Problem:
Wall area 40 m² painted with 2 coats, paint coverage 10 m²/L.
Solution:
- 1.Requirement = (40 / 10) × 2
- 2.Total = 8 liters
Result:8 liters
You need 8 liters of paint (about 3–4 gallons of 2.5L size).
Frequently Asked Questions
How do I use the KalkuLab Wall Paint Calculator?
Enter wall area in square meters, select number of paint coats (usually 1–3), and choose paint type (standard wall paint or waterproof paint). The calculator automatically computes liters and number of paint cans needed.
What factors affect paint quantity calculations?
Main factors include wall area, number of coats, paint type (different coverage rates), and wall surface condition (rough or smooth). The KalkuLab calculator accounts for these variables for more accurate results.
What is the average wall paint coverage per liter?
Wall paint typically covers 8–12 square meters per liter for one coat, depending on paint type and wall condition. KalkuLab uses average values, but you can adjust if you know your product specifications.
Is this calculator suitable for large projects like office buildings?
Yes, the KalkuLab Wall Paint Calculator works for projects from homes to office buildings. Measure total area carefully and consult professionals for very large projects.
How do I avoid wasting paint when using this calculator?
Calculate exact needs, buy about 10% extra as reserve, and follow manufacturer application instructions. This minimizes leftover paint and optimizes budget.
Is this calculator free and accurate?
The KalkuLab calculator is completely free and based on standard industry formulas. Results are estimates; always check product specifications and consult experts for important projects.