Gravel Calculator
Estimate gravel volume, tons and material cost.
Project details
Enter your measurements below.
Estimate gravel volume and approximate weight
The Gravel Calculator converts the project footprint and material depth into bulk volume, applies your waste allowance, and uses the entered bulk density to estimate weight. This is useful for paths, drainage areas, landscape beds, base material and other rectangular gravel applications.
Rectangular gravel areas with a reasonably uniform installed depth.
Cubic yards or cubic metres, approximate tons or kilograms, and material cost.
Weight depends on the bulk density you enter; real density varies by stone type, grading and moisture.
How to use the Gravel Calculator
- Enter the length and width of the gravel area.
- Enter the planned material depth.
- Set a waste allowance for grade variation and handling loss.
- Use a density that matches the gravel product when the supplier provides one.
- Enter the local price per cubic yard or cubic metre if you want a material-cost estimate.
Formula used by DIYGauge
What this result helps you decide
Use volume for ordering and approximate tons for delivery/load planning.
Worked example: 12 ft × 12 ft at 3 in deep
- Area
- 12 ft × 12 ft
- Depth
- 3 in
- Waste
- 5%
- Density
- 2,800 lb/yd³
- Price
- $55/cu yd
The base volume is about 1.33 cu yd. With 5% waste, the calculator returns about 1.40 cu yd. At 2,800 lb/yd³ that is approximately 1.96 tons, and at $55 per cubic yard the material estimate is about $77.
Practical planning tips
Ask the supplier whether material is sold by volume or weight before converting your estimate into an order.
Compacted base layers and loose decorative gravel can require different planning depths.
If the area slopes or excavation depth varies, use an average depth cautiously or split the project into sections.
Common mistakes to avoid
Crushed stone and rounded gravel have different densities.
Compaction can make loose delivered volume higher than finished volume.
Gravel Calculator FAQs
How many tons are in a cubic yard of gravel?+
There is no single fixed conversion because gravel density varies. DIYGauge uses the bulk-density value you enter rather than assuming every gravel product weighs the same.
Should I calculate compacted depth or loose depth?+
Enter the depth you need the calculator to estimate. If a specification gives compacted thickness, supplier guidance may be needed to determine how much loose material must be delivered.
Can I use this for driveway gravel?+
Yes for a simple volume estimate, but the Driveway Gravel Calculator is the more specific tool for driveway planning.
Why is weight only approximate?+
Stone type, particle grading, moisture and compaction affect bulk density, so the weight conversion is an estimate.
How Much Gravel Do I Need?
Calculate gravel volume from length, width and depth, then estimate tons using project-specific bulk density.