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Gravel Calculator
Estimate gravel volume in cubic yards for a rectangular driveway, path, or bed using feet, inches, and an explicit extra allowance.
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How it works
Cubic yards = length × width × (depth in inches ÷ 12) ÷ 27, then apply the chosen allowance.
Assumptions
The area and depth are uniform. Compaction, aggregate density, base preparation, drainage, supplier minimums, and truck capacity are not modeled.
About this calculator
Use this gravel calculator to translate a measured rectangular area and installed depth into the cubic-yard unit commonly used by U.S. landscape suppliers.
How to use it
- Measure project length and width in feet.
- Choose the planned installed depth in inches.
- Add an allowance for grading and measurement variation.
- Confirm compaction, aggregate type, weight, and delivery minimum with the supplier.
Use case
gravel calculator: a clear planning check
Convert project length, width, installed depth, and extra allowance into cubic yards before confirming aggregate density and delivery requirements.
Estimate a rectangular gravel project in cubic yards from feet, inches, and an allowance.
Source and update
Last reviewed: 2026-08-22
NIST Guide for the Use of the International System of UnitsFrequently asked questions
How do I calculate gravel in cubic yards?
Multiply length by width by depth in feet, then divide cubic feet by 27.
Does gravel compact after delivery?
Many aggregates compact. The amount depends on material and site conditions, so ask the supplier or installer.
Does this calculate tons?
No. Converting volume to weight requires the specific aggregate density and moisture condition.
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