Plan site markings with reliable paint quantity estimates. Compare materials, adjust waste, and save time. Export results instantly for crews, bids, and purchasing teams.
| Scenario | Line length | Width | Coats | Coverage | Waste | Symbols area |
|---|---|---|---|---|---|---|
| Parking bays and arrows | 350 m | 100 mm | 2 | 6.0 m²/L | 10% | 12 m² |
| Warehouse aisles | 220 m | 75 mm | 1 | 7.5 m²/L | 8% | 0 m² |
| Road edge lines | 1.2 km | 150 mm | 2 | 5.0 m²/L | 12% | 4 m² |
Example values are for estimating and planning. Always align with manufacturer product data and contract specifications.
Line area:
A_lines = Length × Width × Coats
Total area:
A_total = A_lines + (A_symbols × Coats)
Base paint:
L_base = A_total ÷ Coverage
(where Coverage is in m²/L).
Adjusted paint:
L_adj = L_base × (1+Waste%) × (1+Extra%) × SystemFactor × MethodFactor.
Use the factors to include practical site losses during planning.
This calculator converts marking takeoff information into a paint quantity plan. It totals painted surface area from line length, line width, and number of coats, then converts area into liters using a selected coverage rate. Outputs include liters, US gallons, Imperial gallons, and a recommended number of purchase packs.
Common site and parking markings use 75–200 mm line widths, with 100 mm and 150 mm frequently specified. For bright colors on porous concrete, two coats are often planned. Symbol and stencil footprints (arrows, numbers, accessibility icons) can add measurable area, especially in dense parking layouts.
Coverage depends on product type, substrate porosity, and application method. Planning values often fall in the 4–10 m²/L range for paints, while higher-build systems may require more material for the same area. When a datasheet provides liters per square meter, the calculator converts it to m²/L for consistent reporting.
Waste allowance accounts for overspray, masking, setup losses, and end-of-run container residue. Many field teams use 8–15% on open outdoor work, increasing for wind, complex stencils, or tight rework windows. A separate contingency percentage helps cover touch-ups after curing, traffic reopening, and minor layout changes.
Procurement is typically done in 5 L pails or 18–20 L drums, so pack rounding is critical to avoid shortages. Use round-up for high-risk schedules and multi-color phases. Export the CSV for quantity takeoff logs and the PDF for approvals, subcontractor scope sheets, and site handover documentation.
Use centerline length for straight markings. For curves, measure along the curve centerline. Width is handled separately, so you do not need to measure both edges.
Approximate each symbol as a rectangle or circle footprint on the surface, then sum areas. For repeated stencils, multiply one stencil area by the number of repeats.
Prefer the manufacturer’s coverage rate. If only film build is provided, ask for the recommended spreading rate or liters per square meter for the specified thickness.
Aerosol yield depends on nozzle pattern, distance, and overspray. The can estimate is a practical planning shortcut and should be verified with site trials or vendor guidance.
Start with 10% waste for spray work and 5% extra for touch-ups. Increase waste for wind, masking, or complex symbols, and increase extra for phased work and heavy traffic.
No. It estimates marking material only. Primers, cleaners, bead drop-on material, and preparation consumables should be taken off separately based on your specification.
Yes. Run the calculator once per color group using its specific coverage and waste settings. Combine the exported CSVs for a complete procurement summary.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.