**Definitions:**

**Pound Per Cubic Foot** (abbreviations: **lb/ft3, or ppf3**): is a unit of density, defined by mass in pound divided by volume in cubic foot

**Pound Per Cubic Inch** (abbreviations: **lb/in3, or ppi3**): is a unit of density, defined by mass in pound divided by volume in cubic inch

## How to Convert Pounds Per Cubic Feet to Pounds Per Cubic Inches

*Example: How many pounds per cubic inches are equivalent to 68.5 pounds per cubic feet?*

As;

1 pounds per cubic feet = 0.0005787037037037 pounds per cubic inches

68.5 pounds per cubic feet = Y pounds per cubic inches

Assuming Y is the answer, and by criss-cross principle;

Y equals 68.5 times 0.0005787037037037 over 1

(i.e.) Y = 68.5 * 0.0005787037037037 / 1 = 0.039641203703704 pounds per cubic inches

Answer is: 0.039641203703704 pounds per cubic inches are equivalent to 68.5 pounds per cubic feet.

*Practice Question: Convert the following units into lb/in3:*

N.B.: After working out the answer to each of the next questions, click adjacent button to see the correct answer.

( i ) 71.78 lb/ft3

( ii ) 26.43 lb/ft3

( iii ) 28.67 lb/ft3