Sealcoating Cost Calculator
Square feet in, gallons of sealer and a price at your rate out. Free, no sign-up, and it shows what the job leaves for labor after the material.
Includes 3 free measurements · No credit card required
Sealcoating cost calculator
Asphalt to seal
Sealer
Coverage is 100 sq ft per gallon of mixed sealer per coat for that condition, mixed at 30-40 gallons of water and 300-500 lb of sand per 100 gallons of concentrate, the manufacturer spec. Coal tar and asphalt emulsion concentrate ran $8.50-$9.75 per gallon by the drum in 2026; bulk totes cost less.
Your pricing
Contractors bid residential driveways at $0.30-$0.60 per sq ft with two coats and carry a $200-$350 minimum. Lots run $0.20-$0.35 under 10,000 sq ft, $0.17-$0.30 to 50,000 and $0.12-$0.22 above. Set your own numbers.
Sealer to buy
0gal concentrate
0 sq ft × 2 coats ÷ 100 sq ft/gal = 0.0 gal mixed. Add about 0 lb of sand.
Price at your rate
$0
0 sq ft × $0.30 = $0
Length × width only works on rectangular sections. Parking lots with islands, curved driveways and lots you have not walked yet are where the number drifts, and on sealcoating a wrong area is wrong twice: material and price. Trace the real shape on satellite imagery and the area fills itself in.
Rectangles only. For a lot with islands or a curved drive, the satellite tool below traces the real edge.
How the Calculator Gets Its Numbers
Every sealcoating estimate is four multiplications. The area sets everything else, which is why measuring it is the step worth getting right. Here is a 1,000 sq ft, two-car driveway in typical condition, two coats.
Mixed sealer
area × coats ÷ coverage
1,000 sq ft × 2 ÷ 100 sq ft/gal = 20 gal
Concentrate to buy
mixed ÷ 1.35 (30-40% water)
20 ÷ 1.35 ≈ 15 gal, plus about 60 lb sand
Material cost
concentrate × $/gal
15 gal × $9.00 = $135
Price
area × your rate, or the minimum
1,000 × $0.40 = $400
That driveway bills $400 and burns $135 in sealer, leaving $265 for crack fill, primer, a crew for about two hours, fuel and profit. Push the rate to $0.30 and the same job leaves $165. That is why residential work carries a minimum, and why the material line in the calculator matters more than the headline price.
Coverage is the input to watch. Manufacturers publish 50-60 sq ft per gallon of mixed sealer for two coats on typical pavement, and the calculator's three condition presets bracket that: a porous, oxidized lot can take a quarter more sealer than a lot sealed two years ago. The full rate picture by job type is on the sealcoating cost per square foot page.
What Common Sealcoating Jobs Take and Cost
Two coats on typical pavement. Gallons are concentrate to buy. Prices use $0.30-$0.60 per sq ft on driveways and $0.20-$0.35 to $0.12-$0.22 on lots, sealcoat only. Use them as a sanity check on a number you just calculated, not as a quote.
| Job | Area | Sealer | Price |
|---|---|---|---|
| Single-car driveway400 sq ft | 400 sq ft | 6 gal | at the minimum |
| Two-car driveway800 sq ft | 800 sq ft | 12 gal | $240-$480 |
| Long drive to a detached garage1,200 sq ft | 1,200 sq ft | 18 gal | $360-$720 |
| Small lot, about 12 stalls4,000 sq ft | 4,000 sq ft | 60 gal | $800-$1,400 |
| Strip center, about 40 stalls14,000 sq ft | 14,000 sq ft | 207 gal | $2,400-$4,200 |
| Retail lot, about 100 stalls35,000 sq ft | 35,000 sq ft | 519 gal | $5,950-$10,500 |
Stall counts assume about 300-350 sq ft of pavement per stall including aisles. Crack filling at $1.00-$2.00 per linear foot and striping are extra on every one of these.
Not a Rectangle? Measure It From Satellite
A curved driveway or a lot with islands is where the tape and the guess both fail. Trace the real edge instead: address to square footage in under three minutes.
Search the address
Any driveway or lot in the U.S. loads on satellite imagery, islands, aprons and curb cuts included.
Trace the asphalt
Click around the pavement edge. Draw islands as cutouts so they come out of the sealed area instead of into your sealer order.
Price it as you draw
Set your rate per square foot once. The area, the price and a branded PDF quote are ready before you leave the office.
Where a Sealcoating Estimate Goes Wrong
The calculator is only as good as its inputs. These four are the ones that turn a profitable job into a free one.
The area came from the customer
Property owners quote the lot size from a listing or a guess. The paved area is smaller than the lot and larger than they think. Measure it yourself before a gallon is ordered.
Coverage from a fresh lot on an old one
The same product covers a quarter less on oxidized, raveled asphalt. If the surface looks grey and the aggregate is exposed, use the aged preset and buy accordingly.
One coat priced like two
A maintenance seal on tight pavement is a real product, but it uses half the sealer and needs half the time. Price it as what it is, and say so on the bid.
Sealer at drum prices on a big lot
At drum pricing, sealer alone is $0.10-$0.14 per sq ft. Large-lot rates only work with bulk material, so quote a 50,000 sq ft lot on the price you will actually pay.
The rest of the bid, from crack fill takeoff to the labor line and how to present it, is in how to bid sealcoating jobs.
Sealcoating Calculator Questions
Sealer quantities, coverage, and what the price has to cover.
Multiply the square footage by the number of coats, then divide by the coverage of the mixed sealer. Mixed sealer covers about 80-120 sq ft per gallon per coat, which is the 50-60 sq ft per gallon for two coats that manufacturers publish. A 1,000 sq ft driveway with two coats at 100 sq ft per gallon needs 20 gallons of mixed sealer. Because the concentrate is cut with 30-40 gallons of water per 100 gallons, that is about 15 gallons of concentrate to buy, plus roughly 60 lb of sand.
Your own. The calculator starts at $0.30 per square foot because residential driveways bid at $0.30-$0.60 with two coats and a $200-$350 minimum, while parking lots run lower as they get bigger. Edit the rate and the minimum to match what you charge. The full 2026 rate table by job type, and what moves a job inside those ranges, is on the sealcoating cost per square foot page.
Because coverage is the number that moves the material bill. Oxidized, raveled asphalt is porous and drinks the first coat, so the same gallon covers less ground. Pavement that was sealed a couple of years ago is tight and takes sealer evenly. The three presets span the range you will see in the field; if you know your own coverage from past jobs, pick the preset closest to it.
The sealer figure is concentrate only, which is the bulk of the material bill. Sand adds roughly a dime per pound, polymer additives a few percent, and hot-pour crack sealant is priced by the linear foot on its own line. The calculator shows what is left after sealer for exactly this reason: crack fill, primer, fuel, labor and profit all have to fit inside that number.
You can add up to six rectangular sections, which handles a simple lot. Islands, curved aisles and odd corners are where length × width drifts, and on sealcoating a wrong area is wrong twice: you buy the wrong amount of sealer and quote the wrong price. For anything that is not a clean rectangle, trace the paved area on satellite imagery in SurfaceMeasure and the area calculates itself.
Tracing a surface on satellite imagery typically lands within 1–3% of a tape or wheel measurement, which is closer than most contractors get pacing a lot. On a 20,000 sq ft lot a 3% miss is 600 sq ft, about 12 gallons of mixed sealer either way, and well inside the coverage variation between a porous and a tight surface.
The calculator on this page is free with no sign-up. SurfaceMeasure itself starts with 3 free measurements, no credit card required. Paid plans are $9.99 per month or $99.99 per year for unlimited measurements, saved jobs and branded PDF quotes.
Sealcoating Guides and Tools
The rate, the bid, and the striping that comes after.
Measure the Lot Before You Order the Sealer
3 free measurements, no card required. Search the address, trace the asphalt, and price it at your rate.