The density of water is dependent on temperature. The maximum density of pure water is 1 g/mL (more precisely 0.999973 g/ml) at 4°C.
| Temperature | Density (g/mL or g/cm3) |
| 0 | 0.999841 |
| 1 | 0.999900 |
| 2 | 0.999941 |
| 3 | 0.999965 |
| 4 | 0.999973 |
| 5 | 0.999965 |
| 6 | 0.999941 |
| 7 | 0.999902 |
| 8 | 0.999849 |
| 9 | 0.999781 |
| 10 | 0.999700 |
| 11 | 0.999605 |
| 12 | 0.999498 |
| 13 | 0.999377 |
| 14 | 0.999244 |
| 15 | 0.999099 |
| 16 | 0.998943 |
| 17 | 0.998774 |
| 18 | 0.998595 |
| 19 | 0.998405 |
| 20 | 0.998203 |
| 21 | 0.997992 |
| 22 | 0.997770 |
| 23 | 0.997538 |
| 24 | 0.997296 |
| 25 | 0.997044 |
