Results
Gravel and Aggregate Calculator
Calculate gravel needed for driveways, paths, and drainage. Different sizes serve different purposes.
Gravel Types
- Pea Gravel: 1/4-1/2 inch, decorative
- Crushed Stone: 3/4 inch, driveways
- River Rock: 1-2 inches, drainage
Gravel Quantities
Calculate tons needed:
- Gravel weighs ~1.4 tons per cubic yard
- 3-inch depth typical for driveways
- Add 10-15% for compaction
Frequently Asked Questions About Gravel Calculation
How to calculate gravel needed?
To calculate gravel needed, multiply length × width × depth (in feet) to get cubic feet, then divide by 27 to get cubic yards. For tons, multiply cubic yards by 1.4 (gravel weighs approximately 2,800 lbs per cubic yard). Our gravel calculator does this automatically.
How much gravel do I need for my driveway?
For a gravel driveway, you need 4-6 inches of gravel. A typical 800 sq ft driveway at 4 inches deep requires about 10 cubic yards or 14 tons of gravel. Use 3/4-inch crushed stone for the top layer and larger stone for the base.
How many tons of gravel per cubic yard?
There are approximately 1.4 tons of gravel per cubic yard. Gravel weighs 2,700-2,900 lbs per cubic yard depending on type. Crushed stone is heavier (1.5 tons/yd³) while pea gravel is lighter (1.3 tons/yd³).
What is the cost of gravel per ton?
Gravel costs $15-75 per ton depending on type. Crushed stone is $20-30/ton, pea gravel $25-40/ton, river rock $40-75/ton, and decomposed granite $30-50/ton. Delivery adds $50-150 depending on distance and order size.