Estimate driveway sealer gallons, pails, total coat area, and basic crack filler allowance from driveway size and coverage rate. Use this tool for asphalt driveway maintenance planning before buying sealer and supplies.
Use consistent units and round up before ordering materials.
The calculator multiplies driveway length by width for surface area, then multiplies by the number of coats. Sealer gallons are total coat area divided by coverage per gallon, with waste added. Five-gallon pails are rounded up from the gallon estimate.
Example: a 50 ft by 12 ft driveway is 600 square feet. With two coats, 80 square feet per gallon, and 10% waste, the estimate is 16.5 gallons, or 4 five-gallon pails.
| Surface | Coverage impact | Planning note |
|---|---|---|
| Smooth newer asphalt | Higher coverage | Closer to label rating |
| Rough aged asphalt | Lower coverage | Buy extra sealer |
| Two coats | Double coat area | Common for even finish |
| Cracks | Prep required | Fill before sealing |
Round sealer up to whole pails and keep extra for touchups. Include crack filler, degreaser, cleaner, squeegee, brush, gloves, masking material, and barricades so the driveway can stay closed until cured.
Multiply driveway area by the number of coats, divide by product coverage per gallon, then add waste and round up.
Many products recommend two thin coats for better coverage and durability. Always follow the label.
The calculator includes crack length as a planning input, but crack filler volume depends on crack width and depth.
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