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Asphalt Sealcoat Calculator

Estimate how many gallons of driveway sealcoat you need for a squeegee-applied job.

Computed in your browser — nothing you enter is uploaded. Figures are presented for United States against IRC 2024, and every formula is cited under regulatory standards below.

Last verified 2026-08-25 · v1.0.0

Market
Imperial · sales tax

Sealcoat needed

6 gallons

Check your inputs

Rougher or more porous asphalt absorbs more sealer than a smooth, well-maintained surface — check your specific product's coverage rating.

Area to seal (all coats)
430.56 sq ft

Running these inputs gives 6 gallons as the sealcoat needed. Note that driveway area and number of coats sit at the edge of the range this calculator was checked against, so treat the output as indicative rather than settled. Expect some drift against the real job; the calculation is solid but conditions on site are not. Currently reading for United States under IRC 2024 — pick a different market above and the figures re-cast accordingly.

Estimated cost — your price

This site holds no price list for this material — local prices vary too much to publish honestly. Enter your supplier's price and the result is costed with it.

Preliminary estimate, not certified engineering. This tool produces an indicative quantity calculation for planning purposes only — it is not a certified structural analysis, a guaranteed material takeoff, or a substitute for building department approval. Always verify measurements on-site and have a licensed contractor or structural engineer review any load-bearing, code-sensitive, or safety-critical work before purchasing materials or starting construction. Spotted an arithmetic or standards error? Report it to contact@craftquantities.com with your inputs — confirmed fixes become pinned regression tests.

[Schema Verified] Computed in alignment with American Concrete Institute (ACI 318-19) formulas and International Residential Code (IRC 2024) spatial boundaries.

Regulatory standards & verification citations

  • Squeegee-applied asphalt sealcoat typically covers about 70-80 sq ft per gallon per coat; spray application covers more area per gallon but is less common for DIY driveways

Your workspace

Most jobs need more than one number. Add the calculators you need next and they open right here, underneath this one — your figures stay on screen and nothing is lost to a page change.

Frequently asked questions

How often should a driveway be sealcoated?
Every 2-3 years is a common recommendation for residential asphalt driveways, though climate, sun exposure, and traffic all affect how quickly the existing sealer wears down.
Does new asphalt need to cure before sealcoating?
Yes — most manufacturers recommend waiting at least 90 days (sometimes up to a year) after fresh asphalt installation before the first sealcoat, to let it fully cure.
Spray vs. squeegee application — does it change how much I need?
Yes, spray typically covers more area per gallon than squeegee application but often results in a thinner, less durable coat — this estimate assumes the thicker, more common DIY squeegee method.