Free tool 02
Paint Coverage Calculator
Coverage claims on paint pails are marketing until you do the arithmetic. A gallon spreads 1,604 square feet at a 1-mil wet film; divide by your film build and multiply by your line width, and you have the truth. This tool does exactly that, in your browser.
The lines
The film
The arithmetic, shown
- 1,604 sq ft/gal at 1 mil ÷ 15 mils = 107 sq ft/gal
- 2,000 LF × (4 in ÷ 12) = 667 sq ft of line
- 667 sq ft ÷ 107 sq ft/gal × 1 coat(s) = 6.2 gal
- + 10% margin = 6.9 gal
Your numbers
- Coverage at your film
- 107 sq ft/gal
- LF per gallon at 4 in
- 321 LF
- Gallons to order
- 6.9
- 5-gallon pails
- 2
Planning estimates from your own inputs. Real usage varies with surface porosity, temperature, tip wear, and overspray; track actuals on your first jobs and correct your own coverage figure.
Gallons are the easy number. The bid is the hard one.
The Striping Business Launch Kit turns this coverage math into a full bid-floor worksheet, plus the ADA field guide, templates, and outreach scripts for winning the lots in the first place. $149 once, 30-day money-back guarantee.