Asphalt Calculator
Driveways · Parking lots · Repairs

Asphalt Calculator

Calculate asphalt tons, volume, and material cost from your dimensions and compacted thickness.

Project inputs

Use finished dimensions and compacted thickness.

Project geometry
Use the finished design thickness.
Advanced ordering options

Calculation Results

Enter dimensions to see results.

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What This Estimate Includes

Transparent Formula

Review the dimensions, thickness, density, volume, and weight used in the estimate.

Local Cost Input

Use a current supplier price per ton to turn the quantity into a material budget.

Professional Interface

Intuitive design created for contractors, engineers, and DIY enthusiasts with multiple unit options.

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Tons ↔ Cubic Yards

Convert weight and volume in both directions using density.

Understand the inputs

Check compacted asphalt density Loose vs compacted asphalt Choose an ordering allowance Learn the figuring asphalt formula Check 20×40 driveway tonnage Compare asphalt price per ton Learn what asphalt is made of Compare asphalt vs concrete driveways

How to Use the Calculator

  1. 01

    Enter project dimensions

  2. 02

    Select asphalt thickness

  3. 03

    Choose your unit preference

  4. 04

    Get instant calculation results

Frequently Asked Questions

How accurate is the asphalt calculator for figuring asphalt quantities?
The calculator applies the dimensions, compacted thickness, and density you enter. Its result is a planning estimate, so measurement errors, irregular geometry, mix density, supplier rounding, and field conditions can change the quantity ordered.
What thickness of asphalt do I need for my driveway?
This calculator does not design pavement thickness. Traffic, subgrade support, drainage, climate, base condition, and local specifications all matter. Enter the compacted thickness provided by the project designer, agency, or paving contractor.
How do I convert between tons and cubic yards for asphalt?
The conversion depends on compacted density: US tons = cubic yards × 27 × density (lb/ft³) ÷ 2,000. For example, one cubic yard at 145 lb/ft³ is about 1.96 US tons. Use the proposed mix density instead of treating that example as a universal factor.
Should I order extra asphalt beyond the calculated amount?
Do not add a fixed percentage automatically. Review irregular geometry, measurement uncertainty, construction waste, and supplier minimums with the contractor or asphalt plant, then apply an allowance that fits the project.
What formulas are used in the asphalt calculator?

Area Calculation:

• Rectangle: Area = Length × Width

• Circle: Area = π × Radius²

Volume Calculation:

• Imperial: Volume (ft³) = Area (ft²) × Thickness (inches) ÷ 12

• Metric: Volume (m³) = Area (m²) × Thickness (cm) ÷ 100

Weight Calculation:

• Weight = Volume × Compacted Density

Cost Calculation:

• Total Cost = Weight (tons) × Price per ton

Planning an Asphalt Driveway?

Use the driveway calculator to estimate compacted volume, tonnage, and material cost from your dimensions and a local supplier price.

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