How Much Gravel for a 7x8 Hot Tub Pad?
A 7 by 8 foot hot tub pad covers 56 square feet. At 6 inches of gravel, plan on 1.04 cubic yards, or about 1.5 tons, which answers how much gravel for a 7x8 hot tub pad.
Volume and tonnage calculator →The math
- Area: 56.0 sq ft.
- Depth in feet: 6 ÷ 12 = 0.500 ft.
- Cubic yards: 56.0 × 0.500 ÷ 27 = 1.04 yd³.
- Tons: × about 1.4 tons per yard = 1.5 tons.
The gravel calculator does this for any size.
Related: How Much Gravel for a 10x10 Hot Tub Pad?
Gravel needed by depth
| Depth | Cubic yards | Tons of gravel | Tons +10% |
|---|---|---|---|
| 4 in | 0.69 | 1.0 | 1.1 |
| 6 in | 1.04 | 1.5 | 1.6 |
| 8 in | 1.38 | 1.9 | 2.1 |
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 Gravel for a 10x12 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. Gravel is a broad label, so confirm whether the yard means crushed or rounded stone and whether it carries fines. Ask your supplier for their own tons-per-yard number, since stone source and moisture change it.
Planning the cost
Quarries and landscape suppliers set their own prices, and they change by region and season. Get the price per ton, the delivery fee and the minimum order. If two products will both work, compare cost per square foot at your depth rather than cost per ton.
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.
Questions people ask
How many tons of gravel for a 7x8 hot tub pad?
About 1.5 tons at 6 inches deep.
How many yards of gravel for a 7x8 hot tub pad?
About 1.04 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 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 Crusher Run for a 7x8 Hot Tub Pad?
- How Much Crushed Stone for a 7x8 Hot Tub Pad?
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