3/8 Gravel Calculator

Instantly calculate how many cubic yards, tons, and cubic feet of 3/8 gravel you need for any project – free, no sign-up

  • Free
  • No sign-up
  • Instant results

Loading calculator…

How to use it

  1. Enter length, width (ft) and depth (in).
  2. Watch cubic yards, tons and cubic feet update instantly.
  3. Use the cubic yards to order gravel and round up as needed.

What it does – The 3/8 Gravel Calculator turns your project dimensions (length, width, depth) into the exact amount of gravel you need, shown in cubic yards, tons, and cubic feet. Knowing the volume helps you avoid buying too little (causing project delays) or too much (wasting money). The tool first converts depth from inches to feet, multiplies the three dimensions to get cubic feet, then divides by 27 to get cubic yards. It multiplies cubic yards by 1.4 to estimate tons, the industry‑standard weight for 3/8‑in gravel. How to read the results – Cubic yards is the quantity you’ll order from a supplier; tons gives a weight estimate for transport; cubic feet is useful for on‑site calculations. All results update instantly as you type.

Pro tips

  • Add 5‑10% extra for compaction and spillage.
  • Round up to the nearest whole cubic yard when ordering.
  • Compare the ton estimate with truck capacity to avoid overload.
  • Double‑check depth conversion; 12 in = 1 ft.

Real-life examples

  • A homeowner laying a new driveway wants to know how much 3/8 gravel to order.
  • A landscaper preparing a garden path needs the exact volume to stay within budget.
  • A contractor estimating material for a parking lot base must convert volume to weight for delivery quotes.

Case study

Sarah needed a 10 ft × 8 ft patio with a 4‑in gravel base. Using the calculator she saw she required 0.99 cubic yards (≈1.4 tons). She ordered 1 cubic yard, saved $45 on excess material, and finished on schedule.

Frequently asked questions

How do I convert depth in inches to feet?
Divide the inch value by 12; the calculator does this automatically.
Why is the weight estimate 1.4 tons per cubic yard?
Industry data shows 3/8‑in gravel weighs about 1.4 US tons per cubic yard.
Do I need to round up the cubic yards?
Yes, most suppliers sell whole cubic yards, so round up to avoid shortfalls.
Can I use the calculator for other gravel sizes?
The volume is correct for any size, but the weight estimate (1.4 tons) applies only to 3/8‑in gravel.
Is there a limit to the project size the calculator can handle?
No practical limit; just enter the numbers and the tool will compute the result.