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Sand Base Calculator

Calculate compacted sand leveling pad requirements for backyard sheds, hot tubs, above ground pools, and foundation slabs.

Sand Base Quantities

Real-Time
Total Volume (yd³)
0.00 yd³
0 CFT
Total Weight (Tons)
0.00 tons
Compacted weight
50 lb Bags
0 Bags
For DIY carry
Metric Tonnes
0.00 T
1,000 kg/tonne
Visual Engineering

Compacted Sand Pad Foundation for Sheds & Spas

Timber perimeter retaining formwork with laser-level compacted sand foundation.

LASER LEVEL COMPACTED PAD BASE MATH • Pad Vol = L(ft) × W(ft) × D(ft) • Compaction allowance: +15% • Shed Base: 3" to 4" sand pad • Hot Tub Pad: 4" to 6" sand

Compacted Sand Pad Foundation for Sheds & Spas

Timber perimeter retaining formwork with laser-level compacted sand foundation.

Mathematical Theory

Engineering Calculations & Formulas

Mathematical formulas and engineering constants powering this calculator.

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Shed Base Volume

Calculates cubic volume with compaction allowance for building pads.

Base yd³ = ((Length × Width × Depth in) / 324) × 1.15
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Hot Tub & Paver Pad

Compacted sand base thickness recommendation for heavy load distribution.

Depth Required = 4 inches (100mm) standard for hot tubs
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Tonnage Requirement

Converts base cubic yards to delivery truck tonnage.

Weight (t) = Base yd³ × 1.35 Tons/yd³