Solve backwards
How long a driveway will my sealer cover?
- 10 galThe example worked below
- Asphalt Sealcoat CalculatorEvery figure is its own
You have
How much driveway sealer?
That is 10 gal(37.9 L). Worked by the Asphalt Sealcoat Calculator at the settings below.
The settings it uses
- Number of Coats
- 1
What it will do
800 sq ft of driveway
74.3 m²
One driveway. Enough for a driveway 10 ft wide and 80 ft long.
Or several. About 1 driveway of the size the Asphalt Sealcoat Calculator opens on: a driveway 10 ft wide and 43 ft long.
Check it forwards
- Driveway Area
- 800 sq ft
- It asks for
- 10 gal
- You have
- 10 gal
The Asphalt Sealcoat Calculator asks for 10 gal at that size, and 11 gal one step larger.
If you had more, or less
Around your amount
Each worked by the Asphalt Sealcoat Calculator at the same settings.
Half
5 gal
400 sq ft
a driveway 10 ft wide and 40 ft long
Yours
10 gal
800 sq ft
a driveway 10 ft wide and 80 ft long
Half as much again
15 gal
1,200 sq ft
a driveway 10 ft wide and 120 ft long
Double
20 gal
1,600 sq ft
a driveway 10 ft wide and 160 ft long
Common amounts
What each amount of driveway sealer covers
The sizes it is usually sold in, each worked by the Asphalt Sealcoat Calculator at the settings above.
| You have | It covers | As one driveway | Average driveways |
|---|---|---|---|
| 5 gal(18.9 L) | 400 sq ft(37.2 m²) | a driveway 10 ft wide and 40 ft long | under 1 |
| 10 gal(37.9 L) | 800 sq ft(74.3 m²) | a driveway 10 ft wide and 80 ft long | 1 |
| 20 gal(75.7 L) | 1,600 sq ft(149 m²) | a driveway 10 ft wide and 160 ft long | 3 |
| 40 gal(151.4 L) | 3,200 sq ft(297 m²) | a driveway 10 ft wide and 320 ft long | 6 |
Eighty square feet to the gallon
The calculator holds 80 square feet per US gallon per coat, about 7.5 m² per 3.8 litres, the thin end of the 70 to 80 its source quotes for squeegee-applied sealcoat. A pail rated nearer 70 leaves you roughly a gallon short for every seven, so read the rate on your own pail before the last stretch.
One coat for upkeep, two for a neglected drive
One coat is standard for routine maintenance, and two for a driveway that has not been sealed in years — which halves the length here. More than two adds little protection and risks a slippery, flaking surface, which is why the calculator stops at two coats.
Pails come in fixed sizes
The calculator rounds up to whole US gallons, but sealer is sold in pails, so the order still has to be rounded again to what the supplier stocks. Sealer left in the pail and on the squeegee, the overlap pulled past the edges and any oil-spot primer all sit outside the count — keep a little back.
How the answer is worked
Nothing here is a second formula. The Asphalt Sealcoat Calculator runs forwards — a size in, a quantity out — and this page grows its own starting driveway in proportion until the quantity it asks for is what you have. Where it rounds up to whole containers, the answer is the largest size before the next one would be needed.
Where the calculator adds an allowance for cuts or breakage when you order, the same allowance comes off here, because it is the same calculator: a stack you already own finishes less than its face value. Where it adds none, neither does this page — the settings beside the answer say which.
Asphalt Sealcoat Calculator
runs it forwardsEstimate how many gallons or litres of driveway sealcoat you need for a squeegee-applied job.
Work out what to buy insteadSolve backwards
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Solve backwards
Start from what is already in the yard
Paint, sheets, rolls, bags and pieces, each read the other way by the calculator that orders it.
The calculator's own figures
Nothing is estimated twice: the page runs the same calculator you would order with.
The largest size that fits
Where a calculator rounds up to whole containers, the answer stops before the next one.
Both unit systems
Gallons and litres, square feet and square metres, side by side.
Frequently asked questions
- How much driveway does 10 gal of driveway sealer cover?
- At the Asphalt Sealcoat Calculator's own settings, 800 sq ft (74.3 m²) — a driveway 10 ft wide and 80 ft long. That is about 1 driveway of the size the calculator opens on: a driveway 10 ft wide and 43 ft long. Every figure follows the settings, which you can change in the calculator.
- How much driveway does 40 L of driveway sealer cover?
- At the Asphalt Sealcoat Calculator's own settings, 74.3 m² (800 sq ft) — a driveway 3 m wide and 24.8 m long. That is about 1 driveway of the size the calculator opens on: a driveway 3 m wide and 13.3 m long. Every figure follows the settings, which you can change in the calculator.
- How many square feet does a 5-gallon pail of driveway sealer cover?
- At the calculator's 80 square feet per US gallon per coat, a 5-gallon pail seals about 400 square feet (37 m²) in one coat — for example a single-car driveway 10 feet wide and 40 feet long (3 × 12 m). At two coats it is half that. A pail rated at 70 square feet per gallon covers about an eighth less.
- Should I apply one or two coats of driveway sealer?
- One coat is enough for routine maintenance on a driveway sealed in the last few years. A driveway that has gone unsealed for years usually wants two. More than two generally adds little protection and can leave a slippery surface that flakes.
- Does sprayed sealer cover more than squeegeed?
- Spray application covers more area per gallon, but it lays a thinner film and is less common for DIY driveways. The calculator's rate is for squeegee application, which works the sealer into the surface — the method most homeowners use.