Gravel Calculator
Calculate the volume of gravel required for an area.
Calculation example
Inputs: Length: 20 ft, Width: 10 ft, Depth: 0.25 ft
Result: 50 cubic units
A 20 ft by 10 ft area with 0.25 ft of gravel needs 50 cubic feet before any allowance.
Formula
Gravel volume = length × width × depth.
How to use this calculator
Multiply length by width by depth. Use consistent units for every measurement.
Before you calculate
Measure the project dimensions as accurately as practical and keep all measurements in compatible units. For material products, use the coverage, yield, density, or package size stated by the manufacturer or supplier rather than a generic assumption.
Choose the waste allowance based on the project shape, installation method, cutting requirements, and material characteristics. A simple rectangular estimate may need adjustment for openings, corners, slopes, joints, patterns, compaction, or other site conditions.
Understanding the result
The calculator provides a planning estimate based on the inputs shown above. It is not a substitute for project drawings, structural design, manufacturer instructions, or local requirements. Before ordering, compare the calculated quantity with the supplier's package sizes and ordering units.
Tips
- Depth should represent the planned compacted or installed layer as appropriate.
- Ask the supplier whether their quoted quantity is loose or compacted.
Frequently asked questions
What does the result represent?
It estimates the volume of a rectangular gravel layer.
Does it include compaction?
No. Check supplier guidance for loose versus compacted quantities.
Related calculators
Use compatible units and verify estimates against project specifications, local requirements and manufacturer instructions.