Crushed Stone Calculator (#57 Stone)
Calculate how much #57 crushed stone you need in tons and cubic yards, plus estimated cost, for drainage, driveways and bases.
- Cubic yards
- 1.3
- Tons
- 1.81
- Cubic feet
- 35
- Area
- 100 sq ft
Bulk cost
$73
Before delivery and tax
Bagged
70 bags · $350
Advanced: material density
Default price is a typical U.S. figure ($25–$65 per ton), reviewed November 2026. Prices vary by region; enter your supplier's price for an exact total.
Number 57 stone is clean crushed stone about 3/4 inch to 1 inch across. Water drains through it easily, so it is the usual choice for French drains, shed bases and the middle layer of a gravel driveway.
Suppliers sell it by the ton. This calculator turns your trench or pad size into tons and cubic yards.
How to calculate how much crushed stone you need
- Measure the length and width of the area in feet.
- Decide on depth in inches (see the depth guide below).
- Multiply length × width to get square feet.
- Multiply by depth ÷ 12 to get cubic feet, then divide by 27 for cubic yards.
- Multiply cubic yards by 1.4 to get tons.
Cubic yards = length × width × depth (in) ÷ 12 ÷ 27. Tons = cubic yards × 1.4.
Recommended crushed stone depth
| Project | Depth |
|---|---|
| French drain fill | trench depth |
| Shed or patio base | 4–6 in |
| Driveway middle layer | 4 in |
How much crushed stone for common project sizes
Cubic yards needed before any waste allowance, with tons in brackets (at 1.4 t/yd³).
| Area | 2 in deep | 3 in deep | 4 in deep | 6 in deep |
|---|---|---|---|---|
| 10 × 10 ft | 0.62 yd³ (0.9 t) | 0.93 yd³ (1.3 t) | 1.23 yd³ (1.7 t) | 1.85 yd³ (2.6 t) |
| 10 × 20 ft | 1.23 yd³ (1.7 t) | 1.85 yd³ (2.6 t) | 2.47 yd³ (3.5 t) | 3.7 yd³ (5.2 t) |
| 12 × 12 ft | 0.89 yd³ (1.2 t) | 1.33 yd³ (1.9 t) | 1.78 yd³ (2.5 t) | 2.67 yd³ (3.7 t) |
| 20 × 20 ft | 2.47 yd³ (3.5 t) | 3.7 yd³ (5.2 t) | 4.94 yd³ (6.9 t) | 7.41 yd³ (10.4 t) |
| 12 × 50 ft (driveway) | 3.7 yd³ (5.2 t) | 5.56 yd³ (7.8 t) | 7.41 yd³ (10.4 t) | 11.11 yd³ (15.6 t) |
| 500 sq ft | 3.09 yd³ (4.3 t) | 4.63 yd³ (6.5 t) | 6.17 yd³ (8.6 t) | 9.26 yd³ (13 t) |
| 1,000 sq ft | 6.17 yd³ (8.6 t) | 9.26 yd³ (13 t) | 12.35 yd³ (17.3 t) | 18.52 yd³ (25.9 t) |
Tips before you order
- For a French drain, measure the full trench volume and subtract the pipe volume if you want to be exact.
- Compact base layers in 2 to 3 inch lifts.
Frequently asked questions
How much does a ton of #57 stone cover?
About 115 square feet at 2 inches deep, or 58 square feet at 4 inches deep.
What size is #57 stone?
Roughly 3/4 inch to 1 inch, with no fine particles.