Gravel Table: Volume by Length
Reference table of volume for Gravel across a range of length values — exact, engine-computed figures you can read off at a glance.
Gravel Calculator
Verified formula Updated Jun 2026 Private — runs on your device
Verified formula
Private
Volume
66.67
- Cubic yards
- 2.47
- Approx. weight (tonnes)
- 3.02
For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.
How to use the Gravel Calculator
The Gravel Calculator works out your volume, along with 2 related figures in an instant. Enter length, width and depth and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.
- Enter the length.
- Enter the width.
- Enter the depth.
- Read off your volume, together with cubic yards and approx. weight (tonnes) — the calculator updates automatically, with no button to press.
Formula
The Gravel Calculator uses the formula:
Volume = Length × Width × (Depth ÷ 12)
Worked example
For example, with length of 20 ft, width of 10 ft and depth of 4 in, the volume is 66.67.
| Length | 20 ft |
|---|---|
| Width | 10 ft |
| Depth | 4 in |
| Volume | 66.67 |
|---|---|
| Cubic yards | 2.47 |
| Approx. weight (tonnes) | 3.02 |
Results are estimates for educational use, not professional advice.
Key terms explained
- Volume
- The amount of three-dimensional space an object occupies, measured in cubic units.
Frequently asked questions
Multiply length × width × depth, with depth in feet. A 20 × 10 ft area at 4 inches deep needs about 66.7 cubic feet, or roughly 2.5 cubic yards.
Gravel weighs around 1.6 tonnes per cubic metre. The calculator converts your volume and applies this density for an approximate tonnage.
About 2 inches works for a light top-up, while driveways and paths usually need 4 inches or more over a firm base.
Yes, around 5–10% extra allows for compaction, uneven ground and spillage so you do not run short.
The Gravel Calculator uses the formula: Volume = Length × Width × (Depth ÷ 12). For example, with length of 20 ft, width of 10 ft and depth of 4 in, the volume is 66.67.
Enter the length. Enter the width. Enter the depth. Read off your volume, together with cubic yards and approx. weight (tonnes) — the calculator updates automatically, with no button to press.
Related guides
How to Calculate Gravel: Formula, Steps & Examples
Learn how to calculate Gravel — the formula explained step by step, with worked examples and a free calculator to check your answer.