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: tonne/m³ = oz/in³ × 1.73
Multiply any oz/in³ value by 1.73 to get tonne/m³.
Reverse: oz/in³ = tonne/m³ × 0.578
Common materials — factor: 1 oz/in³ = 1.73 t/m³
| oz/in³ (oz/in³) | tonne/m³ (t/m³) | Material |
|---|---|---|
| 0.001 oz/in³ | 0.00173 t/m³ | Gas |
| 0.01 oz/in³ | 0.0173 t/m³ | Light foam |
| 0.1 oz/in³ | 0.173 t/m³ | Wood |
| 0.376 oz/in³ | 0.6505 t/m³ | Polycarbonate |
| 0.578 oz/in³ | 0.9999 t/m³ | Water |
| 0.589 oz/in³ | 1.019 t/m³ | Seawater |
| 0.921 oz/in³ | 1.593 t/m³ | Aluminum light |
| 1 oz/in³ | 1.73 t/m³ | Aluminum |
| 1.56 oz/in³ | 2.699 t/m³ | Aluminum alloy |
| 2.05 oz/in³ | 3.546 t/m³ | Titanium |
| 2.56 oz/in³ | 4.429 t/m³ | Titanium alloy |
| 4.54 oz/in³ | 7.854 t/m³ | Steel |
| 5.18 oz/in³ | 8.961 t/m³ | Copper |
| 6.55 oz/in³ | 11.33 t/m³ | Lead |
| 11.17 oz/in³ | 19.32 t/m³ | Gold |
1 oz/in³ = 1.73 t/m³.
Water = 1,000 kg/m³ = 1 g/cm³ = 1 kg/L = 62.4 lb/ft³ = 0.0361 lb/in³.
Multiply result by 0.578 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.
Tonnes per cubic meter (t/m³) equals 1,000 kg/m³ and is numerically identical to g/cm³ and kg/L. It is used in mining, geology, bulk materials handling, and geotechnical engineering where material quantities are measured in metric tonnes.
Mining and civil engineering use t/m³ extensively: crushed rock = 1.6 t/m³, sand = 1.5–1.7 t/m³, concrete = 2.3 t/m³, iron ore = 5.0 t/m³. Soil density (bulk density) is typically 1.2–1.8 t/m³ depending on compaction.
Interesting fact: The density of Earth's crust averages about 2.7 t/m³; the mantle 3.3–5.6 t/m³; the core 9.9–13 t/m³. The average density of the entire Earth is 5.515 t/m³ — about 5.5 times denser than water.
Converting oz/in³ to tonne/m³ 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 = 1 tonne/m³ — a universal anchor for density comparisons.
Exact factor: 1 oz/in³ = 1.73 t/m³. Reverse: 1 t/m³ = 0.578 oz/in³.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.