Free · Material quantities

Pea Gravel Volume, Weight & Cost Calculator

Estimate pea gravel volume, mass and cost using a chosen bulk density.

  • Formula & worked example
  • Private in your browser
  • No signup
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Calculator inputs

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How to use this calculator

  1. Enter the known values in the units shown. Results update as you type.
  2. Edit a calculated value to solve backwards, or lock a value to hold it fixed.
  3. Use the worked example to check the method. Reset restores the starting fields.

Private by default

Inputs and results stay in this browser tab. Bookify does not upload or store the values you enter.

Formula and method

A bed 5 by 4 meters at 10 centimeters deep needs 2 m³. A custom bulk density of 1,600 kg/m³ gives 3.2 tonnes, costing 80 at 25 per tonne.

Volume = area × depth; mass = volume × bulk density; material cost = mass × unit price

Worked example

Enter these known values and leave the other values blank.

Gravel type
Enter a custom gravel density
Density
1600 kg/m³
Length
5 m
Width
4 m
Depth
10 cm
Price per unit of mass
25 USD / t
Area
20 m²
Volume needed
2 m³
Weight needed
3.2 t
Price per unit of volume
40 USD / m³
Total cost
80 USD

Assumptions and limitations

  • No. Grain size, voids, moisture and compaction affect bulk density. The presets are estimates; a supplier value is preferable for ordering. This model does not add delivery charges or a waste allowance.
  • Enter dimensions, densities and prices that describe the actual project. Quantities absent from the formula are not added automatically.

Common questions

Is a preset gravel density exact?

No. Grain size, voids, moisture and compaction affect bulk density. The presets are estimates; a supplier value is preferable for ordering. This model does not add delivery charges or a waste allowance.

References

The calculation equations, inverse formulas, units, and input rules were imported from this source. Bookify provides the interface and equation solver.

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