Driveway Sealer Calculator
Buckets of sealer for an asphalt driveway, with coats.
Enter your values
Enter the driveway length in ft.
Enter the width in ft.
Enter the coats you are working with.
Choose one of: Smooth, recently sealed, Average, Rough or porous.
Enter the bucket size in gal.
Enter the price per bucket in $.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Sealer needed
- 15 gallons
- Buckets to buy
- 3 x 5 gal
- Driveway area
- 600 sq ft
- Cost
- $105.00
- Coverage assumed
- 80 sq ft per gallon per coat
Working
- 1600 ft2 x 2 / 80 = 15 gal
Quick answer
Sealer coverage is about 70 to 100 sq ft per gallon per coat, less on rough or porous asphalt.
gallons = area x coats / coverage
At a glance
| What it does | Buckets of sealer for an asphalt driveway, with coats. |
|---|---|
| Category | Home & DIY |
| Inputs needed | Driveway length, Width, Coats, Surface condition, Bucket size, Price per bucket |
| Main output | Sealer needed |
| Formula | gallons = area x coats / coverage |
| Cost | Free — no sign-up, no download |
How to use the Driveway Sealer Calculator
- 1Measure the driveway and include any parking apron.
- 2Choose the condition - rough asphalt drinks far more sealer.
- 3Two thin coats always outlast one thick coat.
Inputs explained
- Driveway length(ft)
- Enter the driveway length in ft.
- Width(ft)
- Enter the width in ft.
- Coats
- Enter the coats you are working with.
- Surface condition
- Choose one of: Smooth, recently sealed, Average, Rough or porous.
- Bucket size(gal)
- Enter the bucket size in gal.
- Price per bucket($)
- Enter the price per bucket in $.
Worked example
Using the values the calculator loads with:
Inputs
- Driveway length50 ft
- Width12 ft
- Coats2
- Surface conditionAverage
- Bucket size5 gal
- Price per bucket35 $
Results
- Sealer needed15 gallons
- Buckets to buy3 x 5 gal
- Driveway area600 sq ft
- Cost$105.00
- Coverage assumed80 sq ft per gallon per coat
- 600 ft2 x 2 / 80 = 15 gal
Frequently asked questions
How often should I seal a driveway?
Every 2 to 4 years. Sealing annually builds up a thick film that cracks and peels.
What temperature do I need?
Above 50 F and rising, with no rain for 24 hours and ideally 48 hours before traffic.
What do I need to enter into the Driveway Sealer Calculator?
Just 6 values: driveway length, width, coats, surface condition, bucket size, price per bucket. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Driveway Sealer Calculator work out the answer?
Sealer coverage is about 70 to 100 sq ft per gallon per coat, less on rough or porous asphalt. It applies the formula gallons = area x coats / coverage and shows the working so you can check each step by hand.
Is the Driveway Sealer Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.