Asphalt Calculator

1. Evaluate the Base

Start by assessing what you’re paving over.
If it’s an existing surface, check for cracks, dips, or other damage. A weak or shifting base will need extra asphalt for leveling and strength.

Gravel bases usually need a thicker layer than concrete, since they can settle over time. A smooth, solid base means less material and longer-lasting results.

2. Measure the Area

Grab your tape measure and record the length and width of the space.
For straight-line areas like driveways or rectangular lots, multiply length by width to get square footage. For curvy or odd shapes, break it down into smaller boxes and add those up.

Don’t forget depth. It matters more than most people realize. Light traffic areas might only need 2–4 inches, but for heavy use—like loading zones or parking lots—you’ll want 6–8 inches for strength and durability.

3. Calculate the Volume

Take your square footage and multiply it by the depth (converted to feet).
That gives you volume in cubic feet. Divide that number by 27 to get cubic yards, which is the industry standard for ordering materials.

Here’s an example:
A 1,000 square foot area with 3 inches of asphalt equals about 92.6 cubic yards.

4. Add for Compaction

Once asphalt is rolled and compacted, the volume shrinks.
To keep from running short, we recommend adding around 10% to your final number. Some jobs may require a little more, depending on the equipment and site conditions.