STRUCTURAL
Mass moment of inertia
Rotational mass moment of inertia.
Try a decimal, 1e-9, 1/3, or 5 1/2.
Result144 lb·in²1 lb·ft² = 144 lb·in²
EVERYDAY · ENGINEERING · SCIENCE
lb·ft² to lb·in² Converter
Convert pound square foot (lb·ft²) to pound square inch (lb·in²). Enter a value for an instant result, or use the examples and reverse conversion below.
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HOW IT IS CALCULATED
Convert through kilogram square metre
Enter a pound square foot value to calculate pound square inch with full internal precision before display rounding.
Display PrecisionAuto · 6 significant digits
Auto trims unnecessary zeroes and uses scientific notation for extreme magnitudes. Use Digits to set the display precision; calculations retain full precision.
QUICK REFERENCE
All units in this quantity
| Unit | Symbol | Converted value |
|---|---|---|
| kilogram square metrefrom lb·ft² | kg·m² | 0.0421401 |
| kilogram square centimetrefrom lb·ft² | kg·cm² | 421.401 |
| gram square centimetrefrom lb·ft² | g·cm² | 421401 |
| pound square inchfrom lb·ft² | lb·in² | 144 |
| pound square footfrom lb·ft² | lb·ft² | 1 |
| slug square footfrom lb·ft² | slug·ft² | 0.031081 |
SI symbols follow international notation. U.S. and Imperial measures are labelled separately where their values differ.
lb·ft² to lb·in² Conversion Reference
Pound Square Foot (lb·ft²) and pound square inch (lb·in²) are units of mass moment of inertia. Use this page to convert in either direction.
Conversion Examples
| Pound Square Foot (lb·ft²) | Pound Square Inch (lb·in²) |
|---|---|
| 1 lb·ft² | 144 lb·in² |
| 5 lb·ft² | 720 lb·in² |
| 10 lb·ft² | 1440 lb·in² |
| 100 lb·ft² | 14400 lb·in² |
Examples are rounded to 6 significant digits. The interactive converter retains full calculation precision; change Display Precision to see more digits.
Reverse Conversion
lb·in² to lb·ft² (pound square inch to pound square foot)