Pound Square Inches to Pound Square Feet Converter
Enter the moment of inertia in pound square inches below to convert it to pound square feet.
Convert Pound Square Inches to Pound Square Feet
Enter a value in pound square inches (lb·in²) to convert to pound square feet (lb·ft²).
Pound Square Inch to Pound Square Foot Conversion Table
Table showing various pound square inch measurements converted to pound square feet. Click any preset value or arrow to load it into the converter.
| Pound Square Inches (lb·in²) | Pound Square Feet (lb·ft²) |
|---|---|
| 1 lb·in² | 0.0069444 lb·ft² |
| 2 lb·in² | 0.0138889 lb·ft² |
| 2.5 lb·in² | 0.0173611 lb·ft² |
| 5 lb·in² | 0.0347222 lb·ft² |
| 10 lb·in² | 0.0694444 lb·ft² |
| 15 lb·in² | 0.1041667 lb·ft² |
| 20 lb·in² | 0.1388889 lb·ft² |
| 25 lb·in² | 0.1736111 lb·ft² |
| 30 lb·in² | 0.2083333 lb·ft² |
| 50 lb·in² | 0.3472222 lb·ft² |
How to Convert Pound Square Inches to Pound Square Feet
To convert pound square inches to pound square feet, multiply the moment of inertia by the following conversion ratio: 0.0069444 pound square feet/pound square inch.
Since one pound square inch is equal to 0.0069444 pound square feet, you can use this simple formula to convert:
The moment of inertia in pound square feet is equal to the moment of inertia in pound square inches multiplied by 0.0069444.
For example, here's how to convert 5 pound square inches to pound square feet using the formula above.
How Many Pound Square Feet Are in a Pound Square Inch?
There are 0.0069444 pound square feet in a pound square inch, which is why we use this value in the formula above.
Our pound square inch to pound square foot calculator automatically converts your moment of inertia measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Pound Square Inches and pound square feet are both units used to measure moment of inertia. Keep reading to learn more about each unit.
What Is a Pound Square Inch?
A pound square inch is a unit of moment of inertia equal to 0.00029264 kilogram square meters (kg·m²), the base unit for moment of inertia. Equal to 2.9264×10⁻⁴ kg·m². [1]
The pound square inch is classified as a US customary unit of moment of inertia. Pound Square Inches can be abbreviated as lb·in²; for example, 1 pound square inch can be written as 1 lb·in².
When working with pound square inches (lb·in²) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, pound square inches (lb·in²) are widely used across fine-tolerance laboratory, analytical, and micro-scale moment of inertia measurements within US customary workflows, engineering documentation, and technical data sheets.
What Is a Pound Square Foot?
A pound square foot is a unit of moment of inertia equal to 0.0421401 kilogram square meters (kg·m²), the base unit for moment of inertia. US customary rotational inertia unit (0.04214 kg·m²). [2]
The pound square foot is classified as a US customary unit of moment of inertia. Pound Square Feet can be abbreviated as lb·ft²; for example, 1 pound square foot can be written as 1 lb·ft².
When working with pound square feet (lb·ft²) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, pound square feet (lb·ft²) are widely used across standard moment of inertia applications within US customary workflows, engineering documentation, and technical data sheets.
When converting moment of inertia between pound square inches (lb·in²) and pound square feet (lb·ft²), keep full floating-point precision (1 lb·in² = 0.0069444 lb·ft²; 1 lb·ft² = 144.0000002 lb·in²) during intermediate calculations and round only the final pound square foot figure to match your instrument tolerance.
More Pound Square Inch & Pound Square Foot Conversions
Need to calculate in the opposite direction? Use our pound square feet to pound square inches calculator to switch your starting unit immediately. You can also explore related tools such as converting pound square feet to pound square inches, converting kilogram square meters to pound square feet, or converting kilogram square meters to kilogram square centimeters.
Convert from Pound Square Inches
Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Length)·Moment of Inertia Metrology Standard — Pound Square Inches (lb·in²) to Pound Square Feet (lb·ft²)
- [2]BIPM SpecificationBIPM (SI Base Unit: Metre (m))·Unit Specifications: Pound Square Inch (lb·in²) & Pound Square Foot (lb·ft²)
- [3]NIST HB 133 ReferenceNIST HB 133 (NIST Handbook 133 (2019 Ed.))·Conversion Factors & Mathematical Basis (lb·in² to lb·ft²)