Convert cubic feet to pounds or pounds to volume using material density, with common substance presets, custom density units, kilograms, tons, and cubic meters.

Required: enter volume and choose a material density.

Converted volume and weight

Weight——
Volume——
Density used——
Material——

Weight = volume × density

Cubic Feet to Pounds Formula

The following formula is used to convert cubic feet into pounds.

LBS = CF * D
  • where LBS is the weight in pounds
  • CF is the volume in cubic feet (ft^3)
  • D is the density of the material or fluid (lbs/ft^3)

To calculate pounds from cubic feet, multiply the volume by the density in pounds per cubic foot.

Cubic Feet to Pounds Conversion Table (Water, ρ = 62.42796 lb/ft³)
Cubic Feet (ft³) Pounds (lb)
1/163.902
⅛7.803
1/610.405
¼15.607
⅓20.809
⅜23.410
½31.214
⅝39.017
⅔41.619
¾46.821
⅞54.024
162.428
1¼78.035
1⅓83.237
1½93.642
1¾109.249
2124.856
2½156.070
3187.284
4249.712
* Rounded to 3 decimals. Assumes water (ρ = 62.42796 lb/ft³). US customary: 1 ft³ ≈ 62.428 lb.

How is cubic feet converted into pounds?

A cubic foot is a unit of volume and lbs is a unit of weight, so they can not be directly converted into one another without additional information.

In this case, the additional information is density. Density is a unit of measure of weight per unit volume, so multiplying it by the volume yields the weight.

How to calculate pounds from cubic feet?

Example Problem:

The following example problem outlines the steps and information needed to calculate pounds from cubic feet.

First, determine the total volume in cubic feet. In this example, the volume has a length, width, and height of 4 ft, 5ft, and 3ft respectively.

Multiplying the sides together yields the volume:

4*5*3 = 60 ft^3.

Next, determine the density of the object or material. In this case, the material has a density of 10 lbs / ft^3.

Finally, calculate the pounds from cubic feet using the formula above:

LBS = CF * D

LBS = 60*10

LBS = 600 lbs