lb to ft³ – pound to cubic feet – mass to volume online

Mass (weight) in pounds (lb):

Density in

Volume in cubic feet (ft³, cu ft, cf):

ft³ to lb

Density of some materials:

• Air ≈ 0.075 lb/ft³
• Aluminum = 168.6 lb/ft³
• Concrete ≈ 149.8 lb/ft³
• Diesel ≈ 53 lb/ft³,
• Gasoline (petrol) ≈ 44 lb/ft³
• Steel = 490 lb/ft³
• Water (4°C) = 62.4 lb/ft³

How to convert from lb to ft³?

The volume in cubic feet is equal to the mass (weight) in pounds divided by the density in pounds per cubic foot.

Formula:

V = m / p

V – volume in cubic feet (ft³, cu ft, cf);

m – mass (weight) in pounds (lb);

ρ – density in pounds per cubic foot (lb/ft³, lb/(cu ft), lb/cf, lb ft^-3).

Example

Convert 11 lb to ft³ if the density is 220 lb/ft³.

Solution: V = m / p = 11 / 2200 = 0.05 ft³. Answer: 11 lb = 0.05 ft³ (density = 220 lb/ft³)

In this calculator, density can be entered in the following units (click on density unit):

• kilogram per cubic meter (kg/m³, kg/(cu m))
• tons per cubic meter (t/m³, t/(cu m))
• grams per milliliter (g/mL)
• grams per cubic centimeter (g/cm³, g/(cu cm), g/cc)
• pound per cubic inch (lb/in³, lb/(cu in))
• pound per cubic foot (lb/ft³, lb/(cu ft), lb/(cf))
• pound per US liquid gallon (lb/US gal)
• ounce per cubic inch (oz/in³, oz/(cu in))
• ounce per cubic foot (oz/ft³, oz/(cu ft))
• slug per cubic foot (slug/ft³, slug/(cu ft), slug/cf)