Gravel & Crushed Stone Calculator
Last updated: · Prices verified
Enter your project area, depth, and stone type to calculate how many cubic yards or tons of gravel you need.
1. Measure your area
2. Stone type & depth
2" decorative · 3–4" driveways & walkways
3. Adjust & price (optional)
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How to measure your space
- 1. Rectangular areas: Measure length × width in feet. For driveways, measure the total length and average width.
- 2. Paths and curved areas: Break into sections and use the Irregular shape option to add them.
- 3. Depth: 2" for decorative ground cover; 3–4" for driveways and high-traffic walkways.
- 4. Stone type: Density varies — crushed limestone is heavier than river rock. Select the right type for accurate tonnage.
Frequently Asked Questions
How many cubic yards of gravel do I need?
Cubic yards = Length (ft) × Width (ft) × Depth (in) ÷ 324. For a 20×20 ft driveway at 3 inches: 3.7 cubic yards. Add 10% for waste.
How much does a cubic yard of gravel weigh?
Pea gravel and 3/4-inch crushed stone weigh about 2,800 lbs (1.40 tons) per cubic yard. Crushed limestone is about 3,000 lbs (1.50 tons).
How deep should I put gravel for a driveway?
A residential driveway needs 4–6 inches of compacted base plus 2–3 inches of surface gravel, totaling 6–9 inches. For a path or landscaping bed, 2–3 inches is enough.
How many tons of gravel do I need?
Tons = Cubic yards × material density. For 3/4-inch crushed stone: tons = cubic yards × 1.40. The Gravel Calculator converts automatically when you select your stone type.
Formula: Volume (cu yd) = Area × Depth ÷ 324. Tons = Volume × density (tons/cu yd). See our methodology page for all constants.