How much material do you need?
Free calculators for concrete, mulch, gravel, decks, roofs and pools. Enter your measurements, get the amount to order.
Handy numbers
The conversions every material order comes back to.
| Amount | Equals |
|---|---|
| 1 cubic yard | 27 cubic feet |
| 1 yard of concrete at 4 in thick | Covers 81 square feet |
| 1 yard of mulch at 3 in deep | Covers 108 square feet |
| One 80 lb bag of concrete | About 0.6 cubic feet |
| 1 yard of crushed stone | About 1.35 to 1.4 tons |
| 1 roofing square | 100 square feet, usually 3 bundles |
Common questions
How many 80 lb bags of concrete make a cubic yard?
45 bags. An 80 lb bag of mix yields about 0.6 cubic feet, and a cubic yard is 27 cubic feet.
How much area does a yard of mulch cover?
108 square feet at 3 inches deep, or 162 square feet at 2 inches.
How much extra should I order?
5 to 10 percent for concrete and gravel. Running short means paying for a second delivery.