lb/in³ to kg/m³ Converter
Enter the density in lb/in³ below to convert it to kg/m³.
Convert lb/in³ to kg/m³
Enter a value in lb/in³ (lb/in³) to convert to kg/m³ (kg/m³).
Pound per Cubic Inch to Kilogram per Cubic Meter Conversion Table
Table showing various pound per cubic inch measurements converted to kg/m³. Click any preset value or arrow to load it into the converter.
| lb/in³ (lb/in³) | kg/m³ (kg/m³) |
|---|---|
| 1 lb/in³ | 27,679.90471 kg/m³ |
| 2 lb/in³ | 55,359.80942 kg/m³ |
| 2.5 lb/in³ | 69,199.761775 kg/m³ |
| 5 lb/in³ | 138,399.52355 kg/m³ |
| 10 lb/in³ | 276,799.0471 kg/m³ |
| 15 lb/in³ | 415,198.57065 kg/m³ |
| 20 lb/in³ | 553,598.0942 kg/m³ |
| 25 lb/in³ | 691,997.61775 kg/m³ |
| 30 lb/in³ | 830,397.1413 kg/m³ |
| 50 lb/in³ | 1,383,995.2355 kg/m³ |
How to Convert lb/in³ to kg/m³
To convert lb/in³ to kg/m³, multiply the density by the following conversion ratio: 27,679.90471 kg/m³/pound per cubic inch.
Since one pound per cubic inch is equal to 27,679.90471 kg/m³, you can use this simple formula to convert:
The density in kg/m³ is equal to the density in lb/in³ multiplied by 27,679.90471.
For example, here's how to convert 5 lb/in³ to kg/m³ using the formula above.
How Many kg/m³ Are in a Pound per Cubic Inch?
There are 27,679.90471 kg/m³ in a pound per cubic inch, which is why we use this value in the formula above.
Our pound per cubic inch to kilogram per cubic meter calculator automatically converts your density measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
lb/in³ and kg/m³ are both units used to measure density. Keep reading to learn more about each unit.
What Is a Pound per Cubic Inch?
A pound per cubic inch is a unit of density equal to 27,679.90471 kg/m³ (kg/m³), the base unit for density. Equal to 27,679.9 kg/m³. [1]
The pound per cubic inch is classified as a US customary and imperial unit of density. lb/in³ can be abbreviated as lb/in³; for example, 1 pound per cubic inch can be written as 1 lb/in³.
When working with lb/in³ (lb/in³) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, lb/in³ (lb/in³) are widely used across large-scale industrial, bulk, and macro-level density specifications within US customary and imperial workflows, engineering documentation, and technical data sheets.
What Is a Kilogram per Cubic Meter?
SI coherent unit of density (identically equal to 1 g/L). It serves as a primary reference unit for measuring density across scientific and practical applications. [2]
The kilogram per cubic meter is classified as an International System of Units (SI) unit of density. kg/m³ can be abbreviated as kg/m³; for example, 1 kilogram per cubic meter can be written as 1 kg/m³.
As the primary coherent reference unit for density in this category, all other density units are mathematically anchored to the kilogram per cubic meter (kg/m³).
In practice, kg/m³ (kg/m³) are widely used across standard density applications within International System of Units (SI) workflows, engineering documentation, and technical data sheets.
When converting density between lb/in³ (lb/in³) and kg/m³ (kg/m³), keep full floating-point precision (1 lb/in³ = 27,679.90471 kg/m³; 1 kg/m³ = 0.000036127 lb/in³) during intermediate calculations and round only the final kilogram per cubic meter figure to match your instrument tolerance.
More Pound per Cubic Inch & Kilogram per Cubic Meter Conversions
Need to calculate in the opposite direction? Use our kg/m³ to lb/in³ calculator to switch your starting unit immediately. You can also explore related tools such as converting kg/m³ to lb/in³, converting g/cm³ to kg/m³, or converting lb/ft³ to kg/m³.
Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Volume & Mass Concentration)·Density & Concentration Metrology Standard — lb/in³ (lb/in³) to kg/m³ (kg/m³)
- [2]NIST SP 811 SpecificationNIST SP 811 (NIST SP 811 App. B.9 (Mass Density))·Unit Specifications: Pound per Cubic Inch (lb/in³) & Kilogram per Cubic Meter (kg/m³)
- [3]BIPM ReferenceBIPM (Coherent SI Density Standards (kg/m³))·Conversion Factors & Mathematical Basis (lb/in³ to kg/m³)