Convert density units — kg/m³, g/cm³, lb/ft³, lb/in³ and more.
| Unit | Name | Value |
|---|---|---|
| kg/m³ | Kilogram/Cubic Meter | 1000 |
| kg/L | Kilogram/Liter | 1 |
| lb/ft³ | Pound/Cubic Foot | 62.427818 |
| lb/in³ | Pound/Cubic Inch | 0.036127298 |
| oz/in³ | Ounce/Cubic Inch | 0.57803802 |
| t/m³ | Tonne/Cubic Meter | 1 |
Formula: tonne/m³ = g/cm³ × 1
Multiply any g/cm³ value by 1 to get tonne/m³.
Reverse: g/cm³ = tonne/m³ × 1
Common materials — factor: 1 g/cm³ = 1 t/m³
| g/cm³ (g/cm³) | tonne/m³ (t/m³) | Material |
|---|---|---|
| 0.0001 g/cm³ | 0.0001 t/m³ | Gas trace |
| 0.001 g/cm³ | 0.001 t/m³ | Low pressure gas |
| 0.01 g/cm³ | 0.01 t/m³ | Light foam |
| 0.1 g/cm³ | 0.1 t/m³ | Aerogel |
| 0.917 g/cm³ | 0.917 t/m³ | Ice |
| 1 g/cm³ | 1 t/m³ | Water |
| 1.025 g/cm³ | 1.025 t/m³ | Seawater |
| 1.6 g/cm³ | 1.6 t/m³ | Sand bulk |
| 2.7 g/cm³ | 2.7 t/m³ | Aluminum |
| 3.52 g/cm³ | 3.52 t/m³ | Diamond |
| 7.85 g/cm³ | 7.85 t/m³ | Steel |
| 8.96 g/cm³ | 8.96 t/m³ | Copper |
| 11.34 g/cm³ | 11.34 t/m³ | Lead |
| 19.3 g/cm³ | 19.3 t/m³ | Gold |
| 22.59 g/cm³ | 22.59 t/m³ | Osmium |
1 g/cm³ = 1 t/m³.
Water = 1,000 kg/m³ = 1 g/cm³ = 1 kg/L = 62.4 lb/ft³ = 0.0361 lb/in³.
Multiply result by 1 to recover the original g/cm³ 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.
Grams per cubic centimeter (g/cm³) equals exactly 1,000 kg/m³ and is numerically identical to g/mL and kg/L. It became popular in chemistry and materials science because water has a convenient density of exactly 1 g/cm³ at 4°C.
Specific gravity (relative density) is defined relative to water at 1 g/cm³, making g/cm³ intuitive for chemists. Gemstone density is expressed in g/cm³: diamond = 3.52 g/cm³, sapphire = 4.0 g/cm³. Metals: iron = 7.87 g/cm³, copper = 8.96 g/cm³.
Interesting fact: The human body has an average density of about 0.985 g/cm³ — just below water — which is why most people float. Fat has a density of ~0.9 g/cm³ while muscle is ~1.06 g/cm³.
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 g/cm³ 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 = 1 g/cm³ = 1 tonne/m³ — a universal anchor for density comparisons.
Exact factor: 1 g/cm³ = 1 t/m³. Reverse: 1 t/m³ = 1 g/cm³.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.