Gravel and aggregate quantity

Gravel calculator

Calculate how much gravel you need for a driveway, path, bed, or base layer. Review the volume in cubic yards or cubic metres, then enter your supplier’s bulk density to estimate mass for the specific stone or aggregate.

ConcreteYardMATERIAL ESTIMATE

Gravel estimate

Measurement system: Imperial. Planning estimate based on the dimensions and allowance shown below.

AGGREGATE QUANTITY ESTIMATE

Build your gravel estimate

Enter the finished area dimensions and compare volume before ordering.

ft
ft
in
areas
kg/m³
Density is optional. Enter the bulk density for your specific aggregate if you want an approximate mass. The calculator does not infer it from the word “gravel.”
Length, width, and depth of a gravel layerLengthWidthDepth

Use the finished area dimensions. Diagram not to scale.

ESTIMATED AGGREGATE

Net volume plus your selected extra.

Planning estimate
Volume to plan for1.36 yd³1.04 m³

VOLUME BREAKDOWN

Net volume
0.944 m³33.33 ft³ · 1.23 yd³
Extra material (10%)
0.094 m³Applied after geometric volume
Planning volume
1.038 m³36.67 ft³ · 1.36 yd³
Surface area9.29 m² · 100 ft²

Add the supplier’s bulk density to estimate mass. Density and compaction depend on the material and site.

This estimates geometric quantity from the dimensions supplied. It does not calculate excavation, drainage, grading, compaction, or a product-specific order factor.

Check the quantities

Volume first. Mass only with a product-specific density.

Convert the area dimensions to metres, multiply by finished depth, then multiply by the number of identical areas. The extra-material setting is shown separately from the net geometric volume.

Volume formulaLength × width × depth × number of areas

The optional mass result uses the bulk density you enter. Keep the density unit at kg/m³ even when you switch the area dimensions to Imperial.

Common questions

Gravel quantity questions

How do I calculate gravel for an area?

Multiply the finished area length by its width and the planned layer depth, using consistent units. Add each separate area or enter the number of identical areas. Apply any extra material factor separately so you can see how it changes the order volume.

How much does a cubic yard of gravel weigh?

There is no single mass that applies to every gravel product. Material, grading, moisture, and how bulk density is reported can change the value. Use a density supplied for the aggregate you are buying; this calculator leaves mass blank until you enter one.

Does this calculator account for compaction?

No. It calculates geometric volume from finished dimensions and a separate extra-material percentage. It does not predict loose-to-compacted volume change. Ask your supplier or site professional which quantity and density basis to use.

For concrete projects

Planning a concrete slab? Estimate the concrete separately from its gravel or aggregate base. The base and pour are different materials with separate thicknesses and ordering assumptions.

Open the concrete slab calculator ↗