Construction & Home
Gravel Calculator
This gravel calculator estimates required gravel in cubic feet, cubic yards, and tons for pathways, driveways, and landscaping.
Quick answer
Volume is based on area and depth.
What this tells you
- •Volume is based on area and depth.
- •Weight is estimated from material density.
- •Waste allowance helps prevent material shortage.
How to Use
- 1Enter length and width in feet.
- 2Enter depth in inches.
- 3Set gravel density (lb/ft3) if known.
- 4Add optional waste percentage.
- 5Calculate to get volume and estimated tons.
How It Works
Formula
Cubic Feet = Length x Width x Depth(ft)
Cubic Yards = Cubic Feet / 27
Weight(lb) = Cubic Feet with waste x Density
Weight(tons) = Weight(lb) / 2000The calculator converts volume to weight using density, then converts pounds to tons for ordering.
Calculation note: values are processed in the order shown above, using the current input units.
Worked Examples
Driveway gravel estimate
Length20 ft
Width10 ft
Depth4 in
Density105 lb/ft3
Waste10%
Result2.72 yd3 with waste, about 3.85 tons
Common mistakes
- Using wrong gravel density
- Ignoring waste and compaction allowances
- Mixing inches and feet for depth
Frequently Asked Questions
A common estimate is around 95-110 lb/ft3 depending on gravel type.
Suppliers may use either; this tool provides both for convenience.
Yes, adding 5-10% is common for practical installations.