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Asphalt tonnage calculator
Tons of hot-mix asphalt for any rectangular area, with an adjustable density and an optional 5% waste allowance.
Asphalt Calculator
Enter your driveway size — get tons, cubic yards and cost instantly. Free, no sign-up.
Asphalt needed
15.23 tons
Estimated material cost: $1,523
- Area 800 ft²
- Volume 7.41 yd³
- Metric 13.81 t
Estimate only — confirm the final quantity with your paving contractor or asphalt supplier before ordering.
Asphalt & driveway calculators
Know exactly how much asphalt you need — in 10 seconds.
Every result above traces back to a named formula and a published density assumption, so you can check it before you call a contractor — not just trust it.
- 145 lb/ft³Published density, shown on every result
- 3 calculatorsTonnage, cost and millings
- 0 sign-upsRuns in your browser, no account
What you can calculate
Three calculators, each with its own formula shown on the page. Start with tonnage — it is the number your supplier actually needs.
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Driveway cost
Material cost from your own price per ton, plus the published installed-price ranges so you can sanity-check a quote.
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Asphalt millings
Recycled asphalt sold by the ton but quoted by the yard — this one converts between the two and allows for compaction.
How it works
1
Measure the area
Length and width in feet. For an irregular driveway, split it into rectangles and add the results.
2
Pick a depth
Most residential driveways use 2 to 3 inches of surface asphalt over a compacted gravel base.
3
Check the math
Every result shows the formula and density used, so you can hand the number to a contractor and explain where it came from.
Want it worked by hand? How to calculate asphalt tonnage goes through it step by step, and how much asphalt do I need lists the tonnage for common driveway sizes. Deciding between surfaces first? Asphalt vs concrete.
What depth does to your order
Depth is the number most people guess at, and it is the one that moves the total. Area is fixed by your driveway; depth is a choice, and it scales the tonnage in a straight line.
Show your math
Every tonnage number on this site comes from one formula: area × depth gives volume, and volume × density gives weight.
We use an in-place density of 145 pounds per cubic foot. The Asphalt Institute states that asphalt mixture typically weighs 142 to 148 pounds per cubic foot in place and recommends 148 for estimating — 145 sits in the middle of that published range, and every calculator lets you change it to match your supplier's mix.
Source: Asphalt Institute — pavement thickness and mix design FAQs
volume (ft³) = length (ft) × width (ft) × depth (in) ÷ 12
tons = volume (ft³) × 145 lb/ft³ ÷ 2,000 Worked example: 40 ft × 20 ft × 3 in = 200 ft³ × 145 ÷ 2,000 = 14.5 tons.
Frequently asked questions
How much asphalt do I need for a driveway?
Multiply length by width to get the area in square feet, multiply that by the depth in inches divided by 12 to get cubic feet, then multiply by 145 lb/ft³ and divide by 2,000 to get tons. A 40 ft × 20 ft driveway at 3 inches deep needs about 14.5 tons of hot-mix asphalt before waste. Add roughly 5% for edges, compaction and waste.
How many square feet does one ton of asphalt cover?
One ton of hot-mix asphalt covers about 83 square feet at 2 inches deep, or about 55 square feet at 3 inches deep, using an in-place density of 145 pounds per cubic foot. Thicker layers cover proportionally less: at 4 inches, one ton covers roughly 41 square feet. Many supplier charts round the 2-inch figure down to 80 square feet as a safety margin.
What density should I use for asphalt?
Use 145 pounds per cubic foot unless your supplier gives you a different figure. The Asphalt Institute states that asphalt mixture typically weighs 142 to 148 pounds per cubic foot in place and recommends 148 for estimating. Pavetally defaults to 145 — the middle of that range — and lets you change it.
Are these calculators free?
Yes. Every calculator on Pavetally is free, runs entirely in your browser, and does not require an account or an email address. Nothing you type into a calculator is sent to a server.
Last updated: August 14, 2026