How Much Crushed Stone for a 10x12 Hot Tub Pad?
A 10 by 12 foot hot tub pad covers 120 square feet. At 6 inches of crushed stone, plan on 2.22 cubic yards, or about 3.1 tons, which answers how much crushed stone for a 10x12 hot tub pad.
Volume and tonnage calculator →The math
- Area: 120.0 sq ft.
- Depth in feet: 6 ÷ 12 = 0.500 ft.
- Cubic yards: 120.0 × 0.500 ÷ 27 = 2.22 yd³.
- Tons: × about 1.4 tons per yard = 3.1 tons.
The crushed stone calculator does this for any size.
Related: How Much Gravel for a 10x12 Hot Tub Pad?
Crushed stone needed by depth
| Depth | Cubic yards | Tons of crushed stone | Tons +10% |
|---|---|---|---|
| 4 in | 1.48 | 2.1 | 2.3 |
| 6 in | 2.22 | 3.1 | 3.4 |
| 8 in | 2.96 | 4.1 | 4.6 |
Stone for a hot tub pad
Hot tubs are heavy once full of water and people. A compacted stone pad of about 4 to 6 inches, perfectly level, works for many tubs, but check the manufacturer’s base requirements before you build.
Related: How Much Crushed Stone for a 10x10 Hot Tub Pad?
Prep
Remove sod and roots, level the area and slope it slightly for drainage. Install edging so the stone stays inside the footprint.
Ordering and delivery
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. Crushed stone has angular faces that lock together under a compactor, which is why it holds a pad shape. Round up by about 10 percent for compaction and uneven ground.
Planning the cost
Stone is usually priced per ton or per cubic yard, and delivery is often a separate charge based on distance. A full truckload can cost less per ton than a partial one, so it can pay to combine projects. Ask whether the quote includes tax, delivery and any small-load fee before you compare yards.
Measuring the area
Use a long tape and measure each side twice. If the ground slopes, measure depth at the high and low ends and average them. Irregular outlines can be broken into simple rectangles, triangles and circles; add the pieces for the total square footage before converting to tons.
Questions people ask
How many tons of crushed stone for a 10x12 hot tub pad?
About 3.1 tons at 6 inches deep.
How many yards of crushed stone for a 10x12 hot tub pad?
About 2.22 cubic yards.
How many tons of crushed stone are in a cubic yard?
Roughly 1.4 tons for planning, but suppliers vary with stone size and moisture.
Do I need to compact it?
Yes for anything that carries weight. Compact in lifts of a few inches with a plate compactor.
Related guides
- Gravel Pad for a Hot Tub: Size, Depth, and Base
- Concrete Slab for a Hot Tub: Size, Thickness, Yards
- 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
- How Much Gravel for a 10x10 Hot Tub Pad?
- How Much Crusher Run for a 10x12 Hot Tub Pad?
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