Density Converter
Kilogram/m³
Definition: The kilogram per cubic meter (symbol: kg/m³ or kg·m⁻³) is the SI derived unit of density. It is defined by mass in kilograms divided by volume in cubic meters.
History/origin: This unit naturally emerged from the International System of Units (SI) as the standard for measuring the volumetric mass density of any substance.
Current use: It is the absolute standard unit used worldwide in physics, fluid mechanics, aerodynamics, and general engineering to express the density of liquids, solids, and gases.
Pound/in³
Definition: The pound per cubic inch (symbol: lb/in³) is an imperial and US customary unit of density, measuring the mass in pounds divided by the volume in cubic inches.
History/origin: As a derivation of the pound and the inch, this unit was established for measuring very dense materials in small quantities where a cubic foot would be too large a volume.
Current use: This unit is heavily utilized in American aerospace engineering, machining, and metallurgy to express the density of heavy metals like steel, aluminum, and titanium.
Kilogram/m³ to Pound/in³ Conversion Table
| Kilogram/m³ [kgm3] | Pound/in³ [lbin3] |
|---|---|
| 0.01 kgm3 | 0.00000036 lbin3 |
| 0.1 kgm3 | 0.00000361 lbin3 |
| 1 kgm3 | 0.00003613 lbin3 |
| 2 kgm3 | 0.00007225 lbin3 |
| 3 kgm3 | 0.00010838 lbin3 |
| 5 kgm3 | 0.00018064 lbin3 |
| 10 kgm3 | 0.00036127 lbin3 |
| 20 kgm3 | 0.00072255 lbin3 |
| 50 kgm3 | 0.00180636 lbin3 |
| 100 kgm3 | 0.00361273 lbin3 |
| 1000 kgm3 | 0.03612729 lbin3 |
How to Convert Kilogram/m³ to Pound/in³
1 kgm3 = 0.00003613 lbin3
1 lbin3 = 27679.9047 kgm3
Example: convert 15 kgm3 to lbin3:
15 kgm3 = 15 × 0.00003613 lbin3 = 0.00054191 lbin3
Did You Know?
- Did you know? Pure water has a density of exactly 1,000 kg/m³ at 4°C. Anything with a density lower than this will float on water, and anything higher will sink!
- Pound per cubic inch is often used in US metallurgy. For example, solid gold has a density of about 0.698 lb/in³, making it one of the heaviest metals you can hold in your hand.