Driveway Sealing Cost Calculator

How much does driveway sealing cost?

A driveway sealing cost calculator multiplies the driveway’s area by two per-square-foot rates, one for sealer and one for labor, and adds them. A 40 × 20 ft driveway is 800 square feet. At $0.20 per sq ft for sealer and $0.15 for labor, sealing costs $160 + $120 = $280. Set labor to zero and the same drive costs $160 to do yourself.

Sealcoat is cheap per square foot, so the cost depends almost entirely on the area and on how many coats you put down.

The formula, step by step

1. Area = driveway length × width, in square feet.
2. Sealer cost = area × sealer rate per sq ft.
3. Labor cost = area × labor rate per sq ft.
4. Total = sealer + labor.

If you buy sealer by the pail, convert first. Rate per sq ft = pail price ÷ square feet the pail covers per coat × number of coats.

Worked examples

1. Two-car driveway, contractor (calculator defaults)

• Area: 40 × 20 = 800 sq ft
• Sealer: 800 × $0.20 = $160
• Labor: 800 × $0.15 = $120
• Total: $280

2. Long single-car drive, DIY, two coats

Say a 5-gallon pail of sealer costs $40 and covers about 400 sq ft per coat (example figures; read your label).

• Area: 60 × 12 = 720 sq ft
• Sealer rate: $40 ÷ 400 = $0.10 per coat, × 2 coats = $0.20 per sq ft
• Sealer: 720 × $0.20 = $144
• Labor: set to $0
• Total: $144, which is 720 × 2 ÷ 400 = 3.6, so 4 pails

Add a squeegee, a broom, crack filler, and oil-spot primer, which the calculator does not include.

Cost by driveway size at the default rates

Driveway	Area	Sealer only ($0.20/sq ft)	With labor ($0.35/sq ft total)
20 × 10 ft	200 sq ft	$40	$70
30 × 12 ft	360 sq ft	$72	$126
60 × 12 ft	720 sq ft	$144	$252
40 × 20 ft	800 sq ft	$160	$280
50 × 24 ft	1,200 sq ft	$240	$420

Many contractors have a minimum charge, so a small driveway can cost more than the per-square-foot math suggests.

How to measure your driveway

• Length: from the garage door or parking pad to the street edge, down the middle.
• Width: measure at a few points and average. Include any parking widening or turnaround as its own rectangle.
• Aprons: the flared part at the street is roughly a triangle on each side. Add half of base × depth for each.
• Leave out concrete. Sealcoat is for asphalt. A concrete apron or walk needs a different product.

What changes the price

• Condition. Lots of cracks mean more crack filler and more labor before any sealing starts.
• Oil stains. These need cleaning and a primer, or the sealer will not stick.
• Number of coats. Two thin coats is common. Each one adds to material and labor.
• Product type. Sealers differ in what they are made from and how much they cost per pail. Use the price and coverage from the actual product.
• Access. A long, narrow, or steep driveway takes more time per square foot.

Common mistakes

• Sealing over open cracks. Fill them first with crack filler and let it cure.
• Sealing in the wrong weather. Most products need dry pavement, no rain for a day, and temperatures above a minimum on the label.
• Pouring it on thick. A heavy coat stays soft and tracks. Two thin coats outlast one thick one.
• Sealing a new driveway too soon. Fresh asphalt needs time to cure first.

Related tools

Find the number of gallons or pails with the sealcoat calculator, and price pothole repair with the cold patch calculator. If the drive is too far gone for sealing, compare against a new surface with the asphalt driveway cost calculator.