Asphalt Calculator
Estimate asphalt volume for a rectangular area.
Calculation example
Inputs: Length: 20 ft, Width: 10 ft, Depth: 0.2 ft
Result: 40 cubic units
A 20 by 10 area at 0.2 depth requires 40 cubic units of asphalt.
Formula
Asphalt volume = length × width × depth.
How to use this calculator
Multiply length by width by depth using consistent units.
Before you calculate
Measure the project dimensions as accurately as practical and keep all measurements in compatible units. For material products, use the coverage, yield, density, or package size stated by the manufacturer or supplier rather than a generic assumption.
Choose the waste allowance based on the project shape, installation method, cutting requirements, and material characteristics. A simple rectangular estimate may need adjustment for openings, corners, slopes, joints, patterns, compaction, or other site conditions.
Understanding the result
The calculator provides a planning estimate based on the inputs shown above. It is not a substitute for project drawings, structural design, manufacturer instructions, or local requirements. Before ordering, compare the calculated quantity with the supplier's package sizes and ordering units.
Tips
- Use the planned compacted depth where appropriate.
- Supplier conversion and density may be needed for ordering by weight.
Frequently asked questions
How is asphalt volume calculated?
Length, width and depth are multiplied.
Can asphalt ordering require weight instead?
Yes. Suppliers may quote asphalt by weight, so a density or supplier conversion may be needed.
Related calculators
Use compatible units and verify estimates against project specifications, local requirements and manufacturer instructions.