How Much Crusher Run for a 7x7 Hot Tub Pad?
A 7 by 7 foot hot tub pad covers 49 square feet. At 6 inches of crusher run, plan on 0.91 cubic yards, or about 1.4 tons, which answers how much crusher run for a 7x7 hot tub pad.
Volume and tonnage calculator →The math
- Area: 49.0 sq ft.
- Depth in feet: 6 ÷ 12 = 0.500 ft.
- Cubic yards: 49.0 × 0.500 ÷ 27 = 0.91 yd³.
- Tons: × about 1.55 tons per yard = 1.4 tons.
The crushed stone calculator does this for any size.
Related: How Much Gravel for a 7x7 Hot Tub Pad?
Crusher run needed by depth
| Depth | Cubic yards | Tons of crusher run | Tons +10% |
|---|---|---|---|
| 4 in | 0.60 | 0.9 | 1.0 |
| 6 in | 0.91 | 1.4 | 1.5 |
| 8 in | 1.21 | 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 Crushed Stone for a 7x7 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. Crusher run mixes stone and stone dust, so it packs nearly solid when compacted in layers. Round up by about 10 percent for compaction and uneven ground.
Measuring the area
Measure length and width in feet at a few points and use the largest figures, since real sites are rarely square. For odd shapes, split the area into rectangles and circles, work out each one and add them together. Depth is the number most people underestimate: drive a stake, run a level string and measure down to the dug-out surface in several spots.
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 crusher run for a 7x7 hot tub pad?
About 1.4 tons at 6 inches deep.
How many yards of crusher run for a 7x7 hot tub pad?
About 0.91 cubic yards.
How many tons of crusher run are in a cubic yard?
Roughly 1.55 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 Crushed Stone for a 6x6 Hot Tub Pad?
- How Much Gravel for a 6x6 Hot Tub Pad?
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