at constant pressure (1 atm) and 25°C.
| Substance | density, ρ (g/mL) |
| air (dry) | 0.001184 |
| aluminum | 2.70 |
| copper | 8.94 |
| concrete | 2.00 |
| cork | 0.240 |
| diamond | 3.50 |
| gold | 19.3 |
| helium | 0.000179 |
| iron | 7.87 |
| iridium | 22.42 |
| lead | 11.34 |
| lithium | 0.535 |
| mercury | 13.6 |
| oak | 0.710 |
| pine | 0.373 |
| platinum | 21.45 |
| silver | 10.50 |
| sodium | 0.970 |
| styrofoam | 0.075 |
| steel | 8.05 |
| titanium | 4.540 |
| water (ice, O°C) | 0.917 |
| water (fresh) | 1.00* |
| water (salt) | 1.030 |
| wood | 0.70 |
| zinc | 7.00 |
* Water actually has a range of densities throughout its temperature range. We opt for the math-friendly 1.00 g/mL version out of convenience.