Convert density units — kg/m³, g/cm³, lb/ft³, lb/in³ and more.
| Unit | Name | Value |
|---|---|---|
| g/cm³ | Gram/Cubic Centimeter | 0.001 |
| kg/L | Kilogram/Liter | 0.001 |
| lb/ft³ | Pound/Cubic Foot | 0.062427818 |
| lb/in³ | Pound/Cubic Inch | 0.000036127298 |
| oz/in³ | Ounce/Cubic Inch | 0.00057803802 |
| t/m³ | Tonne/Cubic Meter | 0.001 |
Formula: oz/in³ = kg/m³ × 0.000578
Multiply any kg/m³ value by 0.000578 to get oz/in³.
Reverse: kg/m³ = oz/in³ × 1730
Common materials — factor: 1 kg/m³ = 0.000578 oz/in³
| kg/m³ (kg/m³) | oz/in³ (oz/in³) | Material |
|---|---|---|
| 0.0001 kg/m³ | 5.780e-08 oz/in³ | Near vacuum |
| 0.001 kg/m³ | 5.780e-07 oz/in³ | Very low density gas |
| 0.1 kg/m³ | 5.780e-05 oz/in³ | Low pressure gas |
| 1 kg/m³ | 0.000578 oz/in³ | Hydrogen gas |
| 1.225 kg/m³ | 0.0007081 oz/in³ | Air at sea level |
| 100 kg/m³ | 0.0578 oz/in³ | Light foam |
| 700 kg/m³ | 0.4046 oz/in³ | Wood |
| 917 kg/m³ | 0.5301 oz/in³ | Ice |
| 1000 kg/m³ | 0.578 oz/in³ | Water |
| 1025 kg/m³ | 0.5925 oz/in³ | Seawater |
| 1600 kg/m³ | 0.9249 oz/in³ | Sand/gravel |
| 2700 kg/m³ | 1.561 oz/in³ | Aluminum |
| 7850 kg/m³ | 4.538 oz/in³ | Steel |
| 1.134e+04 kg/m³ | 6.555 oz/in³ | Lead |
| 1.93e+04 kg/m³ | 11.16 oz/in³ | Gold |
1 kg/m³ = 0.000578 oz/in³.
Water = 1,000 kg/m³ = 1 g/cm³ = 1 kg/L = 62.4 lb/ft³ = 0.0361 lb/in³.
Multiply result by 1730 to recover the original kg/m³ value.
Compares material densities to optimize weight-to-strength ratios in product design.
Calculates dead loads from material densities for structural design in kg/m³ and lb/ft³.
Selects lightweight materials (aluminum, titanium, composites) based on density in g/cm³ or lb/in³.
Measures crude oil and drilling fluid density in kg/m³ or lb/ft³ for reservoir engineering.
Measures soil and rock bulk density in t/m³ for foundation and slope stability analysis.
Uses density in g/cm³ for solution concentration, specific gravity, and process design calculations.
Kilograms per cubic meter (kg/m³) is the SI unit of density, defined as the mass in kilograms contained in one cubic meter of a substance. It became the international standard with the adoption of the SI system in 1960.
Most physical and engineering tables express density in kg/m³: water = 1,000 kg/m³, air = 1.225 kg/m³, steel = 7,850 kg/m³, gold = 19,300 kg/m³. The kg/m³ is the base unit for Archimedes' buoyancy calculations and fluid dynamics.
Interesting fact: The density of the Sun's core is about 150,000 kg/m³ — 150 times denser than water. Osmium, the densest naturally occurring element, has a density of 22,590 kg/m³, nearly twice that of lead.
Ounces per cubic inch (oz/in³) is used in some US manufacturing and specialty applications. One oz/in³ = 1/16 lb/in³ = 1,729.99 kg/m³. It provides finer resolution than lb/in³ for lower-density materials.
oz/in³ appears in some US military and industrial specifications for plastics, composites, and lightweight materials. Water density = 0.578 oz/in³. Aluminum = 1.56 oz/in³. It bridges the gap between lb/in³ (too coarse) and g/cm³ (metric).
Interesting fact: The ounce as a weight unit traces back to the Roman uncia (1/12 of a pound), though the modern avoirdupois ounce (1/16 pound) became standard in medieval English trade. The oz/in³ density unit combines two historical measurement artifacts.
Converting kg/m³ to oz/in³ is common in materials science, engineering, and manufacturing. SI units (kg/m³, g/cm³) are standard in scientific and metric engineering contexts, while Imperial units (lb/ft³, lb/in³) are used in US construction and aerospace. Water at 4°C = 1000 kg/m³ = 0.578 oz/in³ — a universal anchor for density comparisons.
Exact factor: 1 kg/m³ = 0.000578 oz/in³. Reverse: 1 oz/in³ = 1730 kg/m³.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.