ft3 to oz – cubic feet to ounces – mass to volume online

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

Density in

Mass (weight) in ounces (oz):


Density of some materials:

  • Air ≈ 1.2 oz/ft³
  • Aluminum ≈ 2700 oz/ft³
  • Concrete ≈ 2400 oz/ft³
  • Diesel ≈ 850 oz/ft³,
  • Gasoline (petrol) ≈ 710 oz/ft³
  • Steel ≈ 7850 oz/ft³
  • Water (4°C) ≈ 1000 oz/ft³

How to convert from ft3 to oz?

The mass (weight) in ounces is equal to the volume in cubic feet multiplied by the weight in ounces per cubic foot.


m = V x p

mmass (weight) in ounces (oz);

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

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



Convert 2 ft3 to oz if the density is 500 oz/ft3.

Solution: m = V x p = 2 x 500 = 1000 oz. Answer: 2 ft3 = 1000 oz (density = 500 oz/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)