Stone Calculator
Updated Formulas shown
Stone is sold by the ton. A 20 × 10 ft area at 3 in deep needs about 1.9 yd³ — 2.6 tons of crushed stone (≈ 1.35 tons per cubic yard).
Crushed stone needed
1.94 yd³
2.63 tons at 2,700 lb/yd³
- Weight
- 2.63 tons5,250 lb · 2.38 t
- Cubic feet
- 52.5 ft³
- Cubic meters
- 1.49 m³
- Area covered
- 200 ft²
Densities are typical loose figures; ask your supplier for theirs. Delivery minimums are often 1–3 yd³.
The formula
Tons = length × width × depth (in) ÷ 12 ÷ 27 × density. Crushed stone ≈ 2,700 lb/yd³; river rock ≈ 2,600 lb/yd³.
Quick reference
| Area | 2 in deep | 3 in deep | 4 in deep | 6 in deep |
|---|---|---|---|---|
| 50 ft² | 0.31 yd³ · 0.42 t | 0.46 yd³ · 0.63 t | 0.62 yd³ · 0.83 t | 0.93 yd³ · 1.25 t |
| 100 ft² | 0.62 yd³ · 0.83 t | 0.93 yd³ · 1.25 t | 1.23 yd³ · 1.67 t | 1.85 yd³ · 2.5 t |
| 200 ft² | 1.23 yd³ · 1.67 t | 1.85 yd³ · 2.5 t | 2.47 yd³ · 3.33 t | 3.7 yd³ · 5 t |
| 300 ft² | 1.85 yd³ · 2.5 t | 2.78 yd³ · 3.75 t | 3.7 yd³ · 5 t | 5.56 yd³ · 7.5 t |
| 500 ft² | 3.09 yd³ · 4.17 t | 4.63 yd³ · 6.25 t | 6.17 yd³ · 8.33 t | 9.26 yd³ · 12.5 t |
| 1000 ft² | 6.17 yd³ · 8.33 t | 9.26 yd³ · 12.5 t | 12.35 yd³ · 16.67 t | 18.52 yd³ · 25 t |
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Frequently asked questions
How much area does a ton of stone cover?
About 100 ft² at 2 in deep, 67 ft² at 3 in and 50 ft² at 4 in for typical crushed stone.
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Estimates only. Check quantities with your supplier or contractor before ordering.