How to convert pounds per cubic inch to pounds per cubic foot
lb/ft³ = lb/in³ × 1,728Multiply the value in pounds per cubic inch by 1,728. To go the other way, multiply by 0.0005787037037 (or divide by 1,728).
A pound per cubic inch is larger than a pound per cubic foot: one pound per cubic inch contains 1,728 pounds per cubic foot.
Worked examples
- 1 pound per cubic inch1 lb/in³ × 1,728 = 1,728 lb/ft³
- 5 pounds per cubic inch5 lb/in³ × 1,728 = 8,640 lb/ft³
- 10 pounds per cubic inch10 lb/in³ × 1,728 = 17,280 lb/ft³
- 20 pounds per cubic inch20 lb/in³ × 1,728 = 34,560 lb/ft³
- 100 pounds per cubic inch100 lb/in³ × 1,728 = 172,800 lb/ft³
Pounds per cubic inch to pounds per cubic foot conversion table
Values are calculated by the conversion engine and rounded to 8 significant figures.
| Pounds per cubic inch (lb/in³) | Pounds per cubic foot (lb/ft³) |
|---|---|
| 0.1 lb/in³ | 172.8 lb/ft³ |
| 0.25 lb/in³ | 432 lb/ft³ |
| 0.5 lb/in³ | 864 lb/ft³ |
| 1 lb/in³ | 1,728 lb/ft³ |
| 2 lb/in³ | 3,456 lb/ft³ |
| 3 lb/in³ | 5,184 lb/ft³ |
| 4 lb/in³ | 6,912 lb/ft³ |
| 5 lb/in³ | 8,640 lb/ft³ |
| 6 lb/in³ | 10,368 lb/ft³ |
| 7 lb/in³ | 12,096 lb/ft³ |
| 8 lb/in³ | 13,824 lb/ft³ |
| 9 lb/in³ | 15,552 lb/ft³ |
| 10 lb/in³ | 17,280 lb/ft³ |
| Pounds per cubic inch (lb/in³) | Pounds per cubic foot (lb/ft³) |
|---|---|
| 12 lb/in³ | 20,736 lb/ft³ |
| 15 lb/in³ | 25,920 lb/ft³ |
| 20 lb/in³ | 34,560 lb/ft³ |
| 25 lb/in³ | 43,200 lb/ft³ |
| 30 lb/in³ | 51,840 lb/ft³ |
| 40 lb/in³ | 69,120 lb/ft³ |
| 50 lb/in³ | 86,400 lb/ft³ |
| 75 lb/in³ | 129,600 lb/ft³ |
| 100 lb/in³ | 172,800 lb/ft³ |
| 250 lb/in³ | 432,000 lb/ft³ |
| 500 lb/in³ | 864,000 lb/ft³ |
| 1,000 lb/in³ | 1,728,000 lb/ft³ |
About the units
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).
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).
Frequently asked questions
How many pounds per cubic foot are in one pound per cubic inch?
There are 1,728 pounds per cubic foot in one pound per cubic inch, and this value is exact by definition.
How do I convert pounds per cubic inch to pounds per cubic foot?
Multiply the number of pounds per cubic inch by 1,728. For example, 10 lb/in³ × 1,728 = 17,280 lb/ft³.
How many pounds per cubic inch are in one pound per cubic foot?
One pound per cubic foot equals 0.0005787037037 pounds per cubic inch. That is the reverse factor, 1 ÷ 1,728.
What is 10 pounds per cubic inch in pounds per cubic foot?
10 lb/in³ = 17,280 lb/ft³.
Is this lb/in³ to lb/ft³ 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 inch to other units
- Pounds per cubic inch to kilograms per cubic meter
- Pounds per cubic inch to grams per cubic centimeter
- Pounds per cubic inch to grams per milliliter
- Pounds per cubic inch to kilograms per liter
- Pounds per cubic inch to pounds per gallon