Materials calculator · asphalt v1.1
Asphalt Calculator
Calculate how much asphalt you need from measured area and compacted depth. See raw volume and tonnage first, then contingency, practical order quantity and cost separately.
✓No signup
✓Formula shown
✓Editable assumptions
✓US planning estimate
Step 1
Project details
Measure the paved area, sanity-check the live project preview, then set the compacted thickness and any ordering assumptions you want to use.
Project measurement
Ordering & pricing
Advanced assumptions
Formula
Area × compacted thickness = compacted volume.
Compacted volume × asphalt density = asphalt mass.
Rectangle, known-area and irregular / multi-section entry modes all feed the same area calculation.
Asphalt calculator FAQs
How much asphalt do I need?
Enter the total paved area and the finished compacted thickness. The calculator converts that volume to asphalt mass using the editable density, applies any contingency you choose and then rounds the result to the selected purchase increment.
Should I enter compacted thickness or loose asphalt thickness?
Use the finished compacted thickness required for the project. Loose laydown thickness depends on the mix and compaction process, so it should not be substituted for the compacted design thickness unless your contractor or specification tells you to do so.
How many tons are in a cubic yard of asphalt?
There is no single exact conversion because asphalt mass depends on mix density. JobsiteMeasure keeps compacted volume and tonnage separate and uses the editable density assumption to convert between them.
Why is the recommended asphalt order higher than the calculated requirement?
The geometric calculation is shown first. Any contingency is then added and the purchase quantity is rounded upward to the ordering increment you selected, so the recommended order can be slightly higher than the theoretical requirement.
Can I calculate an irregular driveway or parking area?
Yes. Use Irregular / multi-section mode to add rectangles, triangles, circles, semicircles or trapezoids and subtract cut-outs. Those sections are combined into one total paved area before the asphalt calculation is performed.
Planning asphalt quantity from area and depth
Need the calculation explained before entering the job? Read How Much Asphalt Do I Need? for the tonnage formula, a worked example and the difference between raw requirement, allowance and supplier rounding.
Choosing a thickness? Read Asphalt Driveway Thickness: How Thick Should Asphalt Be? before calculating quantity.