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🖌️Driveway Sealer Calculator
Find how many 5-gallon pails of sealer your driveway needs.
Your driveway
You'll need about
5 pails
22.9 gallons for 800 sq ft × 2 coats
pails
5
gallons
22.9
sq ft
800
🛒 Shopping list
- Driveway sealer (5 gal pails)5 pails
Two thin coats last longer than one thick one. Seal when it's above 50°F with no rain for 24 hours.
How it works
Pails = area × coats ÷ (coverage per pail × surface factor). Surface factors: smooth 1.0, aged 0.8, porous 0.6. Gallons = pails × 5.
Worked example
A 40 × 20 ft smooth driveway with 2 coats and 350 sq ft per pail: 1,600 ÷ 350 = 4.6, so 5 pails (about 22.9 gallons).
Questions people ask
Usually 250–400 sq ft per coat; check the label.
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Last updated October 8, 2026. These results are friendly estimates to help you plan — always double-check before buying or making big decisions.