How much crushed concrete do I need?
Crushed concrete is recycled material used for driveway bases, parking pads, and fill under slabs.
Enter the length, width, and depth of your area above. The calculator shows cubic yards, cubic feet, an estimated weight in tons, and the number of bags if you buy bagged crushed concrete. Add a price per cubic yard and it also estimates the cost.
Cubic yard calculator for crushed concrete
This cubic yard calculator for crushed concrete works for any shape. Pick rectangle for most beds and slabs, circle for round areas, or trench for narrow runs. Open the price estimator under the calculator to add your supplier price, delivery fee, and tax. For a full cost breakdown, see the cubic yard price estimator.
Crushed Concrete weight and bags per cubic yard
A planning value for crushed concrete is 2,500 pounds per cubic yard, which is 1.25 US tons. Moisture, particle size, and compaction move that number, so treat it as a starting point.
| Measure | Value |
|---|---|
| Pounds per cubic yard | 2,500 |
| US tons per cubic yard | 1.25 |
| Kilograms per cubic yard | 1,134 |
| Cubic yards per US ton | 0.80 |
| Cubic feet per US ton | 21.60 |
How far does a cubic yard of crushed concrete go?
Coverage depends only on depth. The deeper the layer, the less area a cubic yard covers. The suggested depth for crushed concrete is 4 to 6 inches, and 4 inches is a common choice.
| Depth (inches) | Square feet covered | Square yards covered |
|---|---|---|
| 1 | 324 | 36.0 |
| 2 | 162 | 18.0 |
| 3 | 108 | 12.0 |
| 4 | 81 | 9.0 |
| 6 | 54 | 6.0 |
| 8 | 40 | 4.5 |
| 12 | 27 | 3.0 |
Crushed Concrete needed for common areas at 4 inches deep
| Area | Square feet | Cubic yards | US tons |
|---|---|---|---|
| 5 by 5 ft | 25 | 0.31 | 0.39 |
| 8 by 10 ft | 80 | 0.99 | 1.23 |
| 10 by 10 ft | 100 | 1.23 | 1.54 |
| 10 by 20 ft | 200 | 2.47 | 3.09 |
| 12 by 12 ft | 144 | 1.78 | 2.22 |
| 15 by 20 ft | 300 | 3.70 | 4.63 |
| 20 by 20 ft | 400 | 4.94 | 6.17 |
| 20 by 30 ft | 600 | 7.41 | 9.26 |
| 30 by 40 ft | 1,200 | 14.81 | 18.52 |
| 50 by 50 ft | 2,500 | 30.86 | 38.58 |
Worked example: 30 by 12 feet at 4 inches
The area is 30 feet times 12 feet, or 360 square feet. A depth of 4 inches is 0.33 feet. Volume is 360 times 0.33, which is 120.00 cubic feet. Divide by 27 to get 4.44 cubic yards. At 2,500 pounds per cubic yard that weighs about 5.56 US tons. With 10 percent extra, order 4.89 cubic yards.
Tips for ordering crushed concrete
- It compacts well and is usually cheaper than virgin stone.
- Ask for a clean product free of rebar and wood.
- Compact in layers and water the surface lightly while rolling.
Recycled products vary by source, so look at the pile before you order.
Frequently asked questions
How many cubic yards of crushed concrete do I need?
Multiply length, width, and depth in feet, then divide by 27. A 30 by 12 foot area at 4 inches deep needs about 4.44 cubic yards.
How much does a cubic yard of crushed concrete weigh?
About 2,500 pounds, or 1.25 US tons, as a planning value. Ask your supplier for the exact figure.
How deep should crushed concrete be?
Most projects use 4 to 6 inches. 4 inches is a common choice.
How many square feet does a cubic yard of crushed concrete cover?
81 square feet at 4 inches deep, and 324 square feet at 1 inch.