How many bags of gravel are in a cubic yard?

Look for cubic feet, cu ft, or ft³. A 0.5 ft³ bag contains half a cubic foot, regardless of what the stone weighs. If the label gives both volume and weight, use its declared volume for this conversion. A 50-lb bag is not automatically a 0.5 ft³ bag.

If the label gives only coverage, check its stated layer depth. Square feet measure area; cubic feet measure volume. Coverage at one depth cannot be used at a different depth without converting.

Bag equivalents = cubic yards × 27 ÷ cubic feet per bag. Keep the full result, then round up once for a purchase. The four sizes above divide one cubic yard exactly.

For a 0.8 ft³ bag, one cubic yard equals 33.75 bag volumes. Buy 34 whole bags, which contain 27.2 ft³. The extra 0.2 ft³ comes from rounding up; it is separate from a chosen waste allowance.

For waste, increase the required volume by your chosen percentage before dividing by bag volume and rounding up. If your calculator already includes waste, do not add it again.

1. 2 yd³ × 27 ft³/yd³ = 54 ft³.
2. 54 ft³ ÷ 0.5 ft³/bag = 108 bags.

Buy 108 bags of 0.5 ft³ for 2 cubic yards. No automatic extra percentage is included.

At an assumed pea gravel bulk density of 105 lb/ft³, one cubic yard weighs 2,835 lb and needs 57 whole bags of 50 lb. This estimate depends on density.

1. 27 ft³ × 105 lb/ft³ = 2,835 lb.
2. 2,835 lb ÷ 50 lb/bag = 56.70 bag equivalents.
3. Round up to 57 whole bags of 50 lb.

Bulk density includes gaps between stones and varies with material, moisture, and packing. Use your supplier's density for a weight-only label. If the bag declares a volume, use that volume instead. Compare materials in the gravel weight per cubic yard guide.