Road marking material estimate
Road Marking Paint Calculator
Estimate road marking paint from total painted line length, line width, manufacturer coverage and coat count. Use the actual painted length for dashed lines and add an explicit application-loss allowance for purchasing.
Paint inputs
m² per litre at the product's stated application basis.
Coverage is product- and application-specific. Do not replace a manufacturer's published coverage basis with a generic paint assumption when procurement accuracy matters.
Enter painted length, width and coverage.
Road marking paint formula
Painted area = line length × line width
Net litres = painted area ÷ coverage × coats
Planning litres = net litres × (1 + loss allowance)
Net litres = painted area ÷ coverage × coats
Planning litres = net litres × (1 + loss allowance)
Dashed lines
For a dashed marking, do not multiply the full roadway distance by line width unless the paint is continuous. Enter the sum of the actual painted segments.
What can change coverage?
Surface texture, application equipment, film thickness, overspray and the product formulation can materially change actual consumption.
Frequently Asked Questions
How much road marking paint do I need?
Use painted area, actual product coverage, coat count and an application allowance.
Should coverage come from the manufacturer?
Yes.
Can dashed lines be calculated?
Yes—enter total painted length rather than total road length.