How to convert pounds per cubic foot to pounds per cubic inch
lb/in³ = lb/ft³ × 0.0005787037037Because one pound per cubic inch equals 1,728 pounds per cubic foot, you can also divide: lb/in³ = lb/ft³ ÷ 1,728.
A pound per cubic foot is smaller than a pound per cubic inch: it takes 1,728 pounds per cubic foot to make one pound per cubic inch.
Worked examples
- 1 pound per cubic foot1 lb/ft³ × 0.0005787037037 = 0.0005787037037 lb/in³
- 5 pounds per cubic foot5 lb/ft³ × 0.0005787037037 = 0.002893518519 lb/in³
- 10 pounds per cubic foot10 lb/ft³ × 0.0005787037037 = 0.005787037037 lb/in³
- 20 pounds per cubic foot20 lb/ft³ × 0.0005787037037 = 0.01157407407 lb/in³
- 100 pounds per cubic foot100 lb/ft³ × 0.0005787037037 = 0.05787037037 lb/in³
Pounds per cubic foot to pounds per cubic inch conversion table
Values are calculated by the conversion engine and rounded to 8 significant figures.
| Pounds per cubic foot (lb/ft³) | Pounds per cubic inch (lb/in³) |
|---|---|
| 0.1 lb/ft³ | 0.00005787037 lb/in³ |
| 0.25 lb/ft³ | 0.00014467593 lb/in³ |
| 0.5 lb/ft³ | 0.00028935185 lb/in³ |
| 1 lb/ft³ | 0.0005787037 lb/in³ |
| 2 lb/ft³ | 0.0011574074 lb/in³ |
| 3 lb/ft³ | 0.0017361111 lb/in³ |
| 4 lb/ft³ | 0.0023148148 lb/in³ |
| 5 lb/ft³ | 0.0028935185 lb/in³ |
| 6 lb/ft³ | 0.0034722222 lb/in³ |
| 7 lb/ft³ | 0.0040509259 lb/in³ |
| 8 lb/ft³ | 0.0046296296 lb/in³ |
| 9 lb/ft³ | 0.0052083333 lb/in³ |
| 10 lb/ft³ | 0.005787037 lb/in³ |
| Pounds per cubic foot (lb/ft³) | Pounds per cubic inch (lb/in³) |
|---|---|
| 12 lb/ft³ | 0.0069444444 lb/in³ |
| 15 lb/ft³ | 0.0086805556 lb/in³ |
| 20 lb/ft³ | 0.011574074 lb/in³ |
| 25 lb/ft³ | 0.014467593 lb/in³ |
| 30 lb/ft³ | 0.017361111 lb/in³ |
| 40 lb/ft³ | 0.023148148 lb/in³ |
| 50 lb/ft³ | 0.028935185 lb/in³ |
| 75 lb/ft³ | 0.043402778 lb/in³ |
| 100 lb/ft³ | 0.05787037 lb/in³ |
| 250 lb/ft³ | 0.14467593 lb/in³ |
| 500 lb/ft³ | 0.28935185 lb/in³ |
| 1,000 lb/ft³ | 0.5787037 lb/in³ |
About the units
Pound per cubic foot (lb/ft³)
About 16.018 kg/m³. Used for concrete, soil and insulation densities in US construction. One pound per cubic foot equals 16.01846337 kilograms per cubic meter (kg/m³).
Pound per cubic inch (lb/in³)
The pound per cubic inch (lb/in³) is a unit of density in the US customary system. One pound per cubic inch equals 27,679.90471 kilograms per cubic meter (kg/m³).
Frequently asked questions
How many pounds per cubic inch are in one pound per cubic foot?
There are 0.0005787037037 pounds per cubic inch in one pound per cubic foot, and this value is exact by definition.
How do I convert pounds per cubic foot to pounds per cubic inch?
Multiply the number of pounds per cubic foot by 0.0005787037037. For example, 10 lb/ft³ × 0.0005787037037 = 0.005787037037 lb/in³.
How many pounds per cubic foot are in one pound per cubic inch?
One pound per cubic inch equals 1,728 pounds per cubic foot. That is the reverse factor, 1 ÷ 0.0005787037037.
What is 10 pounds per cubic foot in pounds per cubic inch?
10 lb/ft³ = 0.005787037037 lb/in³.
Is this lb/ft³ to lb/in³ converter accurate?
Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.
Convert pounds per cubic foot to other units
- Pounds per cubic foot to kilograms per cubic meter
- Pounds per cubic foot to grams per cubic centimeter
- Pounds per cubic foot to pounds per gallon
- Pounds per cubic foot to grams per milliliter
- Pounds per cubic foot to kilograms per liter