Pound square foot (lb·ft²)
One avoirdupois pound at one foot: 0.45359237 × 0.3048² kg·m².
What is a pound square foot?
- Symbol
- lb·ft²
- Quantity
- Moment of Inertia
- Unit system
- US customary
- Definition
- One avoirdupois pound at one foot: 0.45359237 × 0.3048² kg·m².
- Exact
- Yes, the value is exact by definition
- Source
- NIST Special Publication 811 (2008), Appendix B.8
Common applications
Used in US motor, fan and pump catalogs, where it is often called WR².
Pound square foot in other moment of inertia units
- 1 lb·ft² = 0.0421401100938048 kg·m²Pound square foot to Kilogram square meter converter
- 1 lb·ft² = 421.401100938048 kg·cm²Kilogram square centimeter
- 1 lb·ft² = 421401.100938048 g·cm²Gram square centimeter
- 1 lb·ft² = 144 lb·in²Pound square inch
- 1 lb·ft² = 2304 oz·in²Ounce square inch
- 1 lb·ft² ≈ 0.03108095017 slug·ft²Slug square foot
Pound square foot quick reference
| Pound square foot | Kilogram square meter | Kilogram square centimeter | Gram square centimeter |
|---|---|---|---|
| 1 lb·ft² | = 0.0421401100938048 kg·m² | = 421.401100938048 kg·cm² | = 421401.100938048 g·cm² |
| 10 lb·ft² | = 0.421401100938048 kg·m² | = 4214.01100938048 kg·cm² | = 4214011.00938048 g·cm² |
| 100 lb·ft² | = 4.21401100938048 kg·m² | = 42140.1100938048 kg·cm² | = 42140110.0938048 g·cm² |
| 1000 lb·ft² | = 42.1401100938048 kg·m² | = 421401.100938048 kg·cm² | = 421401100.938048 g·cm² |
Where the pound square foot fits
The next smaller moment of inertia unit is the pound square inch (lb·in²). 1 lb·ft² = 144 lb·in², and 1 lb·in² ≈ 0.006944444444 lb·ft².
The next larger moment of inertia unit is the kilogram square meter (kg·m²). 1 lb·ft² = 0.0421401100938048 kg·m², and 1 kg·m² ≈ 23.7303604 lb·ft².
Frequently asked questions
- How many kilogram square meters are in one pound square foot?
- One pound square foot = 0.0421401100938048 kg·m² (kilogram square meters).
- How many kilogram square centimeters are in one pound square foot?
- One pound square foot = 421.401100938048 kg·cm² (kilogram square centimeters).
- How many gram square centimeters are in one pound square foot?
- One pound square foot = 421401.100938048 g·cm² (gram square centimeters).