Soil Volume Conversion: Gallons per Cubic Foot

Quick Reference

1 cubic foot = 7.48 US gallons (liquid measure).

For soil (which settles), practical approximations:

• 1 cubic foot ≈ 7.5 gallons (loose)
• 1 cubic foot ≈ 6.5-7 gallons (lightly tamped)
• 5-gallon bucket ≈ 0.67 cubic feet

Common Container Volumes

Calculation Formula

Cubic feet = Length(ft) × Width(ft) × Depth(ft)
Gallons = Cubic feet × 7.48

For precise conversions, see AskNumbers volume converter.