How Much Sand for a 7x7 Sandbox?
How much sand for a 7x7 sandbox: about 40.8 cubic feet if you fill it 10 inches deep, which is around 82 bags of 50 lb play sand.
Volume and tonnage calculator →Sand by fill depth
| Fill depth | Cubic feet | 50 lb bags | Cubic yards |
|---|---|---|---|
| 6 in | 24.5 | 49 | 0.91 |
| 8 in | 32.7 | 66 | 1.21 |
| 10 in | 40.8 | 82 | 1.51 |
| 12 in | 49.0 | 98 | 1.81 |
A 50 lb bag of play sand holds roughly 0.5 cubic feet; check the bag, since brands differ.
Related: How Much Sand for a 10x10 Sandbox?
Fill depth
Fill a sandbox about 2 to 4 inches below the rim so sand stays in during play. Most kids are happy with 8 to 12 inches of sand.
Choosing the sand
Bagged play sand is washed and screened. For big boxes, bulk washed sand can cost less; make sure it is clean and soft, not a coarse concrete sand.
Related: How Much Sand for an 8x10 Sandbox?
Cover and drainage
Lay fabric under the sand for drainage and weed control, and cover the box when not in use.
Bags vs bulk
A 50 lb bag holds about half a cubic foot, so a single cubic yard is roughly 54 bags. For anything larger than a small box, a bulk delivery or a pickup load from a supplier saves money and trips.
Common mistakes
Underestimating depth and forgetting extra for settling and spreading are common. So is laying sand straight on sod, which lets grass and weeds come through. Clear and level the ground first.
Measuring the area
Measure the footprint in feet, multiply for square feet, then multiply by the depth in feet. Divide cubic feet by 27 for cubic yards. Round shapes use 3.1416 times the radius squared. Measure twice; a small mistake in diameter changes the total more than you might expect.
Keeping it in place
Sand moves with wind, rain and use. A frame, edging or a cover keeps it where you put it. Where sand meets lawn, a border of pavers or timber stops it from spreading into the grass and makes mowing easier.
Questions people ask
How many bags of sand for a 7x7 sandbox?
About 82 bags of 50 lb at 10 inches deep.
How many cubic feet of sand for a 7x7 sandbox?
About 40.8 cubic feet at 10 inches.
How deep should sand be in a sandbox?
About 6 to 12 inches, a few inches below the rim.
How much does a bag of play sand cover?
A 50 lb bag is roughly 0.5 cubic feet.
Related guides
- Fill Dirt vs Topsoil: Differences, Uses and Tons to Order
- How Much Sand for a 6x6 Sandbox?
- How Much Sand for a 6x8 Sandbox?
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