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/ft³ = oz/in³ × 108
Multiply any oz/in³ value by 108 to get lb/ft³.
Reverse: oz/in³ = lb/ft³ × 0.009259
Common materials — factor: 1 oz/in³ = 108 lb/ft³
| oz/in³ (oz/in³) | lb/ft³ (lb/ft³) | Material |
|---|---|---|
| 0.001 oz/in³ | 0.108 lb/ft³ | Gas |
| 0.01 oz/in³ | 1.08 lb/ft³ | Light foam |
| 0.1 oz/in³ | 10.8 lb/ft³ | Wood |
| 0.376 oz/in³ | 40.61 lb/ft³ | Polycarbonate |
| 0.578 oz/in³ | 62.42 lb/ft³ | Water |
| 0.589 oz/in³ | 63.61 lb/ft³ | Seawater |
| 0.921 oz/in³ | 99.47 lb/ft³ | Aluminum light |
| 1 oz/in³ | 108 lb/ft³ | Aluminum |
| 1.56 oz/in³ | 168.5 lb/ft³ | Aluminum alloy |
| 2.05 oz/in³ | 221.4 lb/ft³ | Titanium |
| 2.56 oz/in³ | 276.5 lb/ft³ | Titanium alloy |
| 4.54 oz/in³ | 490.3 lb/ft³ | Steel |
| 5.18 oz/in³ | 559.4 lb/ft³ | Copper |
| 6.55 oz/in³ | 707.4 lb/ft³ | Lead |
| 11.17 oz/in³ | 1206 lb/ft³ | Gold |
1 oz/in³ = 108 lb/ft³.
Water = 1,000 kg/m³ = 1 g/cm³ = 1 kg/L = 62.4 lb/ft³ = 0.0361 lb/in³.
Multiply result by 0.009259 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 foot (lb/ft³) is the standard density unit in US engineering and construction. One lb/ft³ equals approximately 16.018 kg/m³. It is used for structural materials, soil, insulation, and HVAC calculations in American practice.
Common lb/ft³ values: air = 0.0765 lb/ft³, water = 62.4 lb/ft³, concrete = 145–150 lb/ft³, structural steel = 490 lb/ft³, wood varies 20–50 lb/ft³. ASHRAE tables for HVAC use lb/ft³ for air and refrigerant densities.
Interesting fact: Aerogel, the world's least dense solid material, has a density of about 0.1–1 lb/ft³ (1.6–16 kg/m³). It is primarily composed of air and can support thousands of times its own weight.
Converting oz/in³ to lb/ft³ 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 = 62.43 lb/ft³ — a universal anchor for density comparisons.
Exact factor: 1 oz/in³ = 108 lb/ft³. Reverse: 1 lb/ft³ = 0.009259 oz/in³.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.