Convert density units — kg/m³, g/cm³, lb/ft³, lb/in³ and more.
| Unit | Name | Value |
|---|---|---|
| kg/m³ | Kilogram/Cubic Meter | 1729.99 |
| g/cm³ | Gram/Cubic Centimeter | 1.72999 |
| kg/L | Kilogram/Liter | 1.72999 |
| lb/ft³ | Pound/Cubic Foot | 107.9995 |
| lb/in³ | Pound/Cubic Inch | 0.062499865 |
| t/m³ | Tonne/Cubic Meter | 1.72999 |
Formula: lb/in³ = oz/in³ × 0.0625
Multiply any oz/in³ value by 0.0625 to get lb/in³.
Reverse: oz/in³ = lb/in³ × 16
Common materials — factor: 1 oz/in³ = 0.0625 lb/in³
| oz/in³ (oz/in³) | lb/in³ (lb/in³) | Material |
|---|---|---|
| 0.001 oz/in³ | 6.250e-05 lb/in³ | Gas |
| 0.01 oz/in³ | 0.000625 lb/in³ | Light foam |
| 0.1 oz/in³ | 0.00625 lb/in³ | Wood |
| 0.376 oz/in³ | 0.0235 lb/in³ | Polycarbonate |
| 0.578 oz/in³ | 0.03612 lb/in³ | Water |
| 0.589 oz/in³ | 0.03681 lb/in³ | Seawater |
| 0.921 oz/in³ | 0.05756 lb/in³ | Aluminum light |
| 1 oz/in³ | 0.0625 lb/in³ | Aluminum |
| 1.56 oz/in³ | 0.0975 lb/in³ | Aluminum alloy |
| 2.05 oz/in³ | 0.1281 lb/in³ | Titanium |
| 2.56 oz/in³ | 0.16 lb/in³ | Titanium alloy |
| 4.54 oz/in³ | 0.2837 lb/in³ | Steel |
| 5.18 oz/in³ | 0.3237 lb/in³ | Copper |
| 6.55 oz/in³ | 0.4094 lb/in³ | Lead |
| 11.17 oz/in³ | 0.6981 lb/in³ | Gold |
1 oz/in³ = 0.0625 lb/in³.
Water = 1,000 kg/m³ = 1 g/cm³ = 1 kg/L = 62.4 lb/ft³ = 0.0361 lb/in³.
Multiply result by 16 to recover the original oz/in³ 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.
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.
Pounds per cubic inch (lb/in³) is used in aerospace, precision machining, and materials engineering where compact unit sizes are practical. One lb/in³ equals 27,679.9 kg/m³.
lb/in³ is standard in US aerospace for specifying material density in structural weight calculations: aluminum = 0.098 lb/in³, titanium = 0.160 lb/in³, steel = 0.284 lb/in³. The unit is preferred because aircraft structural calculations often work in inch-pound units.
Interesting fact: The density of uranium is 0.69 lb/in³ (19,100 kg/m³), making it about 2.4 times denser than steel. This high density — combined with its nuclear properties — makes it valuable for radiation shielding and as kinetic energy penetrators.
Converting oz/in³ to lb/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 = 0.578 oz/in³ = 0.03613 lb/in³ — a universal anchor for density comparisons.
Exact factor: 1 oz/in³ = 0.0625 lb/in³. Reverse: 1 lb/in³ = 16 oz/in³.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.