How to estimate gravel volume and weight
Enter Area, Fill depth, Gravel type / density, and Waste / overage %, then select Calculate. The calculator uses:
Volume = Area x DepthTotal volume (with waste) = Volume x (1 + Waste % / 100)Weight = Total volume x Density
The headline result gives volume in cubic yards and cubic feet, plus estimated weight in US short tons and metric tonnes.
How to use the Gravel Calculator
- Enter the area: type the surface area and pick its unit (sq ft, sq yd, or sq m).
- Enter the fill depth: type the gravel layer depth and pick its unit (in, ft, cm, or mm).
- Choose the gravel type: select a preset or choose Custom density to enter a supplier value. Presets represent lb/ft³ values, and selecting one resets Density to lb/ft³. For a supplier value in kg/m³, use Custom density.
- Set the waste allowance: keep the default
10% or enter a value from0to50. - Calculate: select Calculate. Use Reset to clear the area and restore the other defaults: Fill depth 2, Crushed stone / gravel mix (~100 lb/ft³), Density 100 lb/ft³, and Waste / overage % 10.
What the result shows
The result cards show gravel volume with waste in yd³ and ft³, estimated weight in US short tons, and metric tonnes. The assumptions table also lists converted area and depth, density used, volume before waste, the waste allowance, total volume, and weight conversions. Displayed values use fixed decimal formatting and are rounded for readability.
Use Copy result to copy the plain-text summary. If clipboard access fails, the tool displays Could not copy - select and copy manually. Use Download result (.txt) to save a plain-text file.
Limits of the estimate
- The calculation assumes one uniform area, one uniform fill depth, and one density figure.
- Actual gravel density varies with stone type, size, and moisture. Presets are reference points, not a material lookup; confirm the figure with your supplier.
- Waste / overage % is a simple volume allowance. It may cover expected loss or settling, but it does not model compaction settling beyond the entered depth.
- The tool does not model sub-base preparation, geotextile fabric, drainage design, delivery logistics, or other site-specific conditions.
- It does not fetch live pricing, supplier availability, or site survey data. The result is not certified engineering or purchasing advice.
Frequently Asked Questions
What is the gravel volume and weight formula?
Volume = Area x Depth. Total volume (with waste) = Volume x (1 + Waste % / 100). Weight = Total volume x Density. For example, 200 sq ft at a 3 inch depth (0.25 ft) is 50 cubic feet. With 10% waste that is 55 cubic feet, or about 2.04 cubic yards. At a density of 100 lb/ft³, that is about 2.75 US tons.
What density should I use for gravel?
Loose gravel typically weighs around 95 to 105 lb per cubic foot (about 1,520 to 1,680 kg per cubic meter), depending on stone type, size, and moisture content. This calculator offers common presets as a starting point, but actual density varies by material - confirm the figure with your supplier before ordering.
Why does the calculator include a waste percentage?
A waste (overage) percentage adds a simple allowance for expected material loss, settling, or irregular edges during placement. It is applied as a percentage on top of the calculated volume and defaults to 10%, which you can change or set to 0. The calculator does not model compaction settling beyond the depth you enter.
What area, depth, and density units are supported?
Area accepts square feet, square yards, or square meters. Depth accepts inches, feet, centimeters, or millimeters. Density accepts pounds per cubic foot or kilograms per cubic meter. Results are shown in cubic yards, cubic feet, cubic meters, US short tons, and metric tonnes.
Does this tool fetch live pricing or give certified engineering advice?
No. It performs a single, transparent calculation using only the area, depth, density, and waste percentage you type in. It does not fetch material prices, supplier data, or site conditions, and it is not a certified engineering or purchasing recommendation.