Road Base Calculator

Instantly calculate how many cubic yards, tons, and cubic feet of road base you need for any project—free and instant.

  • Free
  • No sign-up
  • Instant results

Loading calculator…

How to use it

  1. Enter length in feet.
  2. Enter width in feet.
  3. Enter depth in inches and click Calculate.

What it does – You input the length, width, and depth of the area you plan to fill and the tool instantly returns the volume in cubic yards, the equivalent weight in tons, and the volume in cubic feet. Why it matters – Knowing the exact amount prevents over‑ordering, saves money, and ensures the sub‑grade is properly compacted. How to read the results – Cubic yards is the standard measure for ordering road base; multiply by 1.4 to see the approximate tons. Cubic feet helps you compare to other material specs. No extra calculations are needed; the numbers are ready for your supplier quote. Use the cubic‑yard figure to request delivery from your local aggregate supplier. If your project includes a 5‑10% waste factor, add it before ordering. The tons value lets you verify truck load limits. All results are displayed with two decimal places for precision.

Pro tips

  • Add 5‑10% extra for compaction loss.
  • Round up to the nearest 0.1 cubic yard for ordering.
  • Check supplier’s minimum load weight before ordering tons.
  • Enter depth in inches; the calculator converts automatically.

Real-life examples

  • Homeowner laying a new driveway and needs exact material quantities.
  • Landscaper preparing a parking pad for a small business.
  • DIY enthusiast building a garden path and wants to avoid over‑buying.

Case study

Sam needed a driveway base for a 30 × 40 ft area at 4 in depth. The calculator showed 3.6 cubic yards, about 5 tons. He ordered 4 cubic yards, saved $200, and finished on schedule.

Frequently asked questions

How deep should road base be?
Commonly 4 inches for a paver patio sub-base and 6–8 inches for a driveway — check your project's requirements.