How to use it
- Enter the driveway length and width.
- Adjust the depth of each layer — 4 in each is a common starting point.
- Choose your state.
The formula
Each layer: tons = length × width × depth ÷ 27 × density
Total = sum of all layers
Worked example
| Driveway length | 50 ft |
| Driveway width | 12 ft |
| Base layer depth (crusher run / #3 stone) | 4 in |
| Middle layer depth (#57 stone) | 4 in |
| Top layer depth (#411 / crusher run fines) | 4 in |
| State (for price) | U.S. average |
| Extra for settling / compaction | 5 % |
Result
| Total gravel | 33.8 tons |
| Total volume | 23.3 yd³ |
| Base layer | 11.7 tons |
| Middle layer | 10.5 tons |
| Top layer | 11.7 tons |
| Dump-truck loads (~15 t) | 3 |
| Estimated material cost | $338–$1,692 |
Tips before you order
- A typical tandem dump truck carries 10–15 tons.
- Crown the driveway slightly so water runs off the sides, and add a ditch or culvert where water crosses.
See typical gravel prices for every state on the gravel prices by state page.
Questions
How much gravel for a 50 ft driveway?
A 50 × 12 ft driveway built with three 4 in layers needs about 32 tons of gravel before the settling allowance.