How Many Bags of Gravel Do I Need? (Bags per Yard Chart)
One cubic yard of gravel equals 54 bags of 0.5 cu ft, 27 bags of 1 cu ft or about 57 bags of 50 lb. See bags-per-area charts, bagged vs bulk cost, and how to calculate bags of gravel or pea gravel.
Nestiex Team ·
Short answer: one cubic yard of gravel equals:
- 54 bags of 0.5 cubic feet
- 27 bags of 1 cubic foot
- about 57 bags of 50 lb
Bagged gravel is perfect for small jobs, such as a planter, a path border, or topping up a pea gravel patio. For anything bigger, bulk delivery is usually far cheaper.
This guide shows how to calculate bags for any area, gives quick charts, and compares bagged with bulk cost. To skip the maths, use the bagged gravel calculator.
Bag sizes explained
Retail gravel is usually sold either by volume (0.5 ft³ or 1 ft³) or by weight (40 or 50 lb). Volume bags are easy: one cubic yard is 27 cubic feet, so:
| Bag size | Bags per cubic yard |
|---|---|
| 0.5 cu ft | 54 |
| 1 cu ft | 27 |
| 50 lb | ≈57 |
| 40 lb | ≈71 |
For weight-based bags, dry gravel weighs about 105 lb per cubic foot, or 2,835 lb per cubic yard (Engineering ToolBox).
- 2,835 ÷ 50 = 56.7, so about 57 bags of 50 lb.
- 2,835 ÷ 40 = 70.9, so about 71 bags of 40 lb.
How to calculate how many bags of gravel you need
- Multiply length × width in feet to get square feet.
- Multiply by depth in inches ÷ 12 to get cubic feet.
- Divide by the bag size in cubic feet. For weight bags, divide the weight needed (cubic feet × 105) by the bag weight.
- Round up and add a few spare bags.
Example: a 10 × 4 ft border, 2 inches deep, with 0.5 ft³ bags
- 10 × 4 = 40 sq ft
- 40 × (2 ÷ 12) = 6.67 ft³
- 6.67 ÷ 0.5 = 13.3, so buy 14 bags
Bags of gravel per 100 square feet
| Depth | 0.5 ft³ bags | 1 ft³ bags | 50 lb bags |
|---|---|---|---|
| 1 in | 17 | 9 | 18 |
| 2 in | 34 | 17 | 35 |
| 3 in | 50 | 25 | 53 |
| 4 in | 67 | 34 | 70 |
Rounded up. Based on 105 lb/ft³ for the 50 lb column.
How many bags of pea gravel do I need?
The same chart applies. Pea gravel is sold in the same bag sizes, and the volume maths is identical.
Example: a 12 × 12 ft pea gravel patio at 3 inches needs 36 ft³, which is 72 bags of 0.5 ft³. In bulk, that same job is only 1.33 cubic yards. See the pea gravel guide or the pea gravel calculator.
How many bags of gravel for a driveway?
Driveways need a lot of stone. HomeGuide recommends at least 5–6 inches total depth (HomeGuide).
A modest 40 × 10 ft driveway at 6 inches is 200 cubic feet. That is 400 bags of 0.5 ft³, or about 420 bags of 50 lb (over 10 tons). Bulk delivery is the only practical option here. See how to build a gravel driveway.
Bagged vs bulk gravel: which is cheaper?
HomeGuide’s 2026 prices (source):
- Bagged pea gravel or crushed stone: $2–$6 per bag
- Decorative bagged gravel: $6–$8 per bag
- Bulk gravel: $15–$75 per cubic yard, about $40 on average
Cost of one cubic yard (54 bags of 0.5 ft³):
| Option | Cost per cubic yard |
|---|---|
| Bags at $2 | $108 |
| Bags at $4 | $216 |
| Bags at $6 | $324 |
| Bulk (average) | about $40 + delivery |
Rule of thumb: bags make sense up to about half a cubic yard (around 27 small bags). Above that, bulk delivery almost always costs less, even after the delivery fee. See the gravel cost guide for delivery prices.
When bags are the better choice
- Small or hard-to-reach areas, such as backyards with no truck access
- Top-ups and repairs
- Decorative colored stone needed in small amounts
- When you can’t take a bulk delivery or have nowhere to store a pile
Tips for buying bagged gravel
- Check the bag size. Some bags list cubic feet, others list pounds.
- Buy a few extra from the same batch, because colors can vary between lots.
- Mind the weight. A 50-lb bag is manageable, but 50 of them add up to over a ton in your vehicle.
Frequently asked questions
How many bags of gravel are in a yard? 54 bags of 0.5 ft³, 27 bags of 1 ft³, or about 57 bags of 50 lb.
How many 50 lb bags of gravel make a ton? 40 bags (2,000 ÷ 50).
How many bags of pea gravel do I need for 100 sq ft? About 34 bags of 0.5 ft³ at 2 inches deep, or 50 bags at 3 inches.
Is bagged gravel cheaper than bulk? No. At $2–$6 per bag, a cubic yard in bags costs $108–$324, versus about $40 in bulk before delivery.
Sources
- HomeGuide, How Much Does Crushed Stone or Gravel Cost? (2026): homeguide.com
- HomeGuide, How Much Does a Gravel Driveway Cost? (2026): homeguide.com
- Engineering ToolBox, Dirt and Mud – Densities: engineeringtoolbox.com