Gravel Calculator
Estimate gravel volume for driveways, pathways, and drainage projects. Get results in cubic yards, cubic feet, and estimated tons.
Results
Gravel Types & Coverage
Gravel is typically sold by the cubic yard or by the ton. Different gravel types have different densities. This calculator uses 1.4 tons per cubic yard as a standard conversion.
- Crushed stone: ~1.4 tons per cubic yard
- Pea gravel: ~1.3 tons per cubic yard
- River rock: ~1.5 tons per cubic yard
- Order 5-10% extra for compaction and settling
How to Calculate It Yourself
If you prefer to check the math by hand, follow these steps:
- Measure length and width in feet.
- Convert depth to feet (4 inches = 0.33 ft).
- Cubic feet = length x width x depth.
- Cubic yards = cubic feet / 27.
- Tons = cubic yards x 1.4 (typical density).
Worked Example
A 20 x 10 ft driveway at 4 inches: 20 x 10 x 0.33 = 66 cu ft = 2.4 cu yd, about 3.4 tons. Add 10% for settling and compacting, so order roughly 2.7 cu yd.
Approximate Material Costs
Prices vary by region and supplier. These are rough US averages to help with budgeting.
| Item | Estimate | Notes |
|---|---|---|
| Crushed stone (per ton) | $30 - $50 | Best for driveways |
| Pea gravel (per ton) | $40 - $60 | Pathways and play areas |
| Delivery fee | $50 - $100 | Local delivery |
Frequently Asked Questions
How much gravel do I need for a driveway?
For a standard driveway, you need 4-6 inches of gravel depth. A 20x10 foot driveway at 4 inches deep requires approximately 2.5 cubic yards or 3.5 tons of gravel.
What type of gravel is best for a driveway?
Crushed stone (like #57 or #67) is the best choice for driveways. It compacts well and provides a stable surface. Pea gravel is better for pathways and decorative areas.
How many tons of gravel do I need?
Multiply cubic yards by 1.4 to get the approximate tonnage. For example, 2.5 cubic yards × 1.4 = 3.5 tons. This varies slightly by gravel type and density.
Should I order extra gravel?
Yes, order 5-10% extra gravel to account for compaction, settling, and spreading. Gravel compacts by about 10% when tamped down.