Waste allowance
Mistake: Entering 0.5 when you mean 50%.
Fix: Enter 50 for 50%; 0.5 represents 0.5%.
Calculators · Free
Paint procurement report for contractors
Turn net measurements into whole-can orders; see waste, leftover paint and material cost.
01Enter your values
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02Paint procurement report for contractors
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How it works
Turn net measurements into whole-can orders; see waste, leftover paint and material cost.
Litres = Net paintable area × Number of coats ÷ Paint coverage × (1 + Waste allowance / 100)
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Your data stays yours
Inputs are processed on this page and are never sent to a server.
About this tool
Use tool ↑Turn net measurements into whole-can orders; see waste, leftover paint and material cost.
Use net area for one paint product and color, with label coverage. Can counts round up; labor is excluded.
- Enter your values
- Net paintable area
- Number of coats
- Paint coverage
- Can volume
- Price per can
- Waste allowance
- Calculation method
Litres = Net paintable area × Number of coats ÷ Paint coverage × (1 + Waste allowance / 100)
- Example scenario · Result
8 Cans
Calculation method
- Use net area for one paint product and color, with label coverage.
- Can counts round up; labor is excluded.
Litres = Net paintable area × Number of coats ÷ Paint coverage × (1 + Waste allowance / 100)
Paint procurement report for contractors
- Net paintable area
- 90 m²
- Number of coats
- 2
- Paint coverage
- 10 m²/L
- Can volume
- 2.5 L
- Price per can
- 25
- Waste allowance
- 10 %
Result
8 Cans
Frequently asked questions
How should I interpret the result?
Use net area for one paint product and color, with label coverage. Can counts round up; labor is excluded.
Where does my data go?
Calculations run on your device. Form inputs are not sent to a server.
Terms and definitions
Enter your values
- Measurement system
The initial choice follows your browser region. Your choice is remembered on this device. Gallons are US gallons. Switching units keeps your numbers unchanged and interprets them in the new unit.
Numbers stay unchanged. Check the new unit and enter the intended measurement, or select an example for that system.
- Net paintable area
Use net area for one paint product and color, with label coverage.
Enter a numerical value for this quantity. Use the unit shown beside this field. m² / ft²
Minimum: 0.1 · Maximum: 100000 m²
- Number of coats
Enter a whole number; fractional counts are not valid.
Minimum: 1 · Maximum: 6
- Paint coverage
Use net area for one paint product and color, with label coverage.
Enter a numerical value for this quantity. Use the unit shown beside this field. m²/L / ft²/US gal
Minimum: 0.1 · Maximum: 100 m²/L
- Can volume
Enter a numerical value for this quantity. Use the unit shown beside this field. L / US gal
Minimum: 0.1 · Maximum: 1000 L
- Price per can
Enter a numerical value for this quantity.
Minimum: 0 · Maximum: 1000000
- Waste allowance
Enter a percentage, not its decimal fraction: 50 means 50%. Use the unit shown beside this field. %
Minimum: 0 · Maximum: 100 %
Result
- Result
Use net area for one paint product and color, with label coverage. Can counts round up; labor is excluded.
Calculated from your entries using the method below.
- Litres
Use net area for one paint product and color, with label coverage. Can counts round up; labor is excluded.
Calculated from your entries using the method below.
- Total cost
Use net area for one paint product and color, with label coverage. Can counts round up; labor is excluded.
Calculated from your entries using the method below.
Common mistakes and quick fixes
Net paintable area · Paint coverage · Can volume
Mistake: Changing units and assuming the entered numbers were converted.
Fix: Numbers stay unchanged. Check the new unit and enter the intended measurement, or select an example for that system.
Paint procurement report for contractors
Mistake: Treating a result as valid outside the described scope.
Fix: Use net area for one paint product and color, with label coverage. Can counts round up; labor is excluded.
Limits and key assumptions
- Can counts round up; labor is excluded.
- Displayed results may be rounded; rounding does not add measurement precision.