How Much Gravel Under a 10x10 Deck?
A 10 by 10 foot deck covers 100 square feet. At 3 inches of gravel, plan on 0.93 cubic yards, or about 1.3 tons, which answers how much gravel under a 10x10 deck.
Volume and tonnage calculator →The math
- Area: 100.0 sq ft.
- Depth in feet: 3 ÷ 12 = 0.250 ft.
- Cubic yards: 100.0 × 0.250 ÷ 27 = 0.93 yd³.
- Tons: × about 1.4 tons per yard = 1.3 tons.
The gravel calculator does this for any size.
Related: How Much Crushed Stone Under a 10x10 Deck?
Gravel needed by depth
| Depth | Cubic yards | Tons of gravel | Tons +10% |
|---|---|---|---|
| 2 in | 0.62 | 0.9 | 1.0 |
| 3 in | 0.93 | 1.3 | 1.4 |
| 4 in | 1.23 | 1.7 | 1.9 |
| 6 in | 1.85 | 2.6 | 2.9 |
Stone for a deck
Under a deck, stone is a weed and moisture barrier rather than a structural layer. Slope the soil away from the house, lay fabric and spread 2 to 3 inches of washed stone that drains quickly.
Related: How Much Pea Gravel Under a 10x10 Deck?
Prep
Remove sod and roots, level the area and slope it slightly for drainage. Install edging so the stone stays inside the footprint.
Buying the stone
Most quarries and landscape yards deliver by the ton; ask whether there is a minimum and a delivery fee, and where the driver can dump without damaging your lawn. Gravel is a broad label, so confirm whether the yard means crushed or rounded stone and whether it carries fines. Round up by about 10 percent for compaction and uneven ground.
Common mistakes
People often forget that compaction reduces volume, so they come up short. Others order clean, round stone where a packable crushed stone with fines would have stayed put. Finally, dumping the whole load in one pile far from the work area adds hours of wheelbarrow trips.
Tools for the job
A flat shovel, a steel rake, a wheelbarrow and a rented plate compactor cover most residential pads. A landscape rake or the back of a rake levels the top layer, and a long straightedge or a level string shows high and low spots before the final pass.
Questions people ask
How many tons of gravel under a 10x10 deck?
About 1.3 tons at 3 inches deep.
How many yards of gravel under a 10x10 deck?
About 0.93 cubic yards.
How many tons of gravel are in a cubic yard?
Roughly 1.4 tons for planning, but suppliers vary with stone size and moisture.
Should I put landscape fabric under the stone?
On soft or clay soil, a woven geotextile keeps stone from sinking into the dirt and makes the layer last longer.
Related guides
- Gravel Under a Deck: Weeds, Drainage, and Depth
- How Much Does a Ton of Gravel Cover? Depth Chart
- Tons to Cubic Yards for Gravel: Conversion Chart
- Crushed Stone vs Gravel: Differences and Best Uses
- Geotextile Fabric for Driveways: Woven vs Nonwoven and How Much You Need
- Compacting a Driveway Gravel Base in Lifts
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