Cubic Yards Calculator
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A cubic yard is a unit of volume equal to 27 cubic feet (3 ft × 3 ft × 3 ft). It is the standard ordering unit for bulk materials in the US: concrete, mulch, topsoil, gravel, and sand are all typically sold by the cubic yard.
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Tip: Always add 10% extra to account for waste, spillage, and uneven ground. It's cheaper to have a little leftover than to stop a project waiting for more material.
- 11 cubic yard = 27 cubic feet = 764.555 liters
- 2Volume needed: (Length ft × Width ft × Depth ft) / 27
- 3Concrete: 1 yd³ weighs about 4,050 lbs (1.8 metric tons)
- 4Mulch: 1 yd³ covers 100 sq ft at 3 inches deep
| Material | Coverage at 3" depth | Coverage at 6" depth |
|---|---|---|
| Mulch | 108 sq ft | 54 sq ft |
| Topsoil | 108 sq ft | 54 sq ft |
| Gravel/stone | 108 sq ft | 54 sq ft |
| Concrete (slab) | — | 54 sq ft at 6" |
| Compost | 108 sq ft | 54 sq ft |
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Fun Fact
A standard concrete truck holds 8–10 cubic yards — enough for a 20×24 foot driveway at 4 inches thick. Ordering too little forces a second delivery; ordering too much wastes money (concrete is rarely returned).
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