The Free On-line Aquaculture Dictionary |
Hydrometer conversion to salinity | ||||
Click on the temperature range you require below: |
-1 to 8oC | 9 - 18oC | 18.5 - 23oC | 23.5 - 28oC | 28.5 - 33oC |
Table gives salinity in parts per thousand for temperatures 18.5 - 23oC
S.G. | Temperature oC | |||||||||
18.5 | 19 | 19.5 | 20 | 20.5 | 21 | 21.5 | 22 | 22.5 | 23 | |
0.999 | 0 | 0.1 | 0.2 | 0.3 | ||||||
1.000 | 0.5 | 0.6 | 0.7 | 0.8 | 1 | 1.1 | 1.2 | 1.4 | 1.5 | 1.6 |
1.001 | 1.8 | 1.9 | 2 | 2.1 | 2.3 | 2.4 | 2.5 | 2.5 | 2.7 | 2.8 |
1.002 | 3.1 | 3.2 | 3.3 | 3.4 | 3.6 | 3.7 | 3.8 | 4 | 4.1 | 4.2 |
1.003 | 4.4 | 4.5 | 4.6 | 4.8 | 4.9 | 5 | 5.1 | 5.3 | 5.4 | 5.5 |
1.004 | 5.7 | 5.8 | 5.9 | 6.1 | 6.2 | 6.3 | 6.4 | 6.6 | 6.7 | 7 |
1.005 | 7.1 | 7.1 | 7.2 | 7.4 | 7.5 | 7.6 | 7.7 | 7.9 | 8.1 | 8.3 |
1.006 | 8.4 | 8.5 | 8.7 | 8.8 | 8.9 | 9.1 | 9.2 | 9.3 | 9.4 | 9.6 |
1.007 | 9.7 | 9.8 | 10 | 10.1 | 10.2 | 10.4 | 10.5 | 10.6 | 10.7 | 10.9 |
1.008 | 11 | 11.1 | 11.3 | 11.4 | 11.5 | 11.7 | 11.8 | 11.9 | 12 | 12.2 |
1.009 | 12.3 | 12.4 | 12.6 | 12.7 | 12.8 | 13 | 13.1 | 13.2 | 13.4 | 13.6 |
1.010 | 13.6 | 13.7 | 13.9 | 14 | 14.1 | 14.3 | 14.4 | 14.5 | 14.8 | 14.9 |
1.011 | 14.9 | 15 | 15.2 | 15.3 | 15.4 | 15.6 | 15.7 | 16 | 16.1 | 16.2 |
1.012 | 16.2 | 16.3 | 16.5 | 16.6 | 16.7 | 17 | 17.1 | 17.3 | 17.4 | 17.5 |
1.013 | 17.5 | 17.7 | 17.8 | 17.9 | 18 | 18.3 | 18.4 | 18.6 | 18.7 | 18.8 |
1.014 | 18.8 | 19 | 19.1 | 19.3 | 19.5 | 19.6 | 19.7 | 19.9 | 20 | 20.1 |
1.015 | 20.1 | 20.4 | 20.5 | 20.6 | 20.8 | 20.9 | 21 | 21.2 | 21.3 | 21.6 |
1.016 | 21.4 | 21.7 | 21.8 | 22 | 22.1 | 22.2 | 22.3 | 22.5 | 22.7 | 22.9 |
1.017 | 22.9 | 23 | 23.1 | 23.3 | 23.4 | 23.5 | 23.6 | 23.8 | 24 | 24.2 |
1.018 | 24.2 | 24.3 | 24.4 | 24.6 | 24.7 | 24.8 | 24.9 | 25.2 | 25.3 | 25.5 |
1.019 | 25.5 | 25.6 | 25.7 | 25.9 | 26 | 26.1 | 26.4 | 26.5 | 26.6 | 26.8 |
1.020 | 26.8 | 26.9 | 27 | 27.2 | 27.3 | 27.4 | 27.7 | 27.8 | 27.9 | 28.2 |
1.021 | 28.1 | 28.2 | 28.3 | 28.5 | 28.6 | 28.9 | 29 | 29.1 | 29.2 | 29.5 |
1.022 | 29.4 | 29.5 | 29.6 | 29.8 | 30 | 30.2 | 30.3 | 30.4 | 30.7 | 30.8 |
1.023 | 30.7 | 30.8 | 30.9 | 31.2 | 31.3 | 31.5 | 31.6 | 31.7 | 32 | 32.1 |
1.024 | 32 | 32.1 | 32.2 | 32.5 | 32.6 | 32.8 | 32.9 | 33.2 | 33.3 | 33.4 |
1.025 | 33.3 | 33.4 | 33.7 | 33.8 | 33.9 | 34.1 | 34.2 | 34.5 | 34.6 | 34.7 |
1.026 | 34.6 | 34.7 | 35 | 35.1 | 35.2 | 35.4 | 35.6 | 35.8 | 35.9 | 36 |
1.027 | 35.9 | 36.2 | 36.3 | 36.4 | 36.5 | 36.7 | 36.9 | 37.1 | 37.2 | 37.5 |
1.028 | 37.2 | 37.5 | 37.6 | 37.7 | 37.8 | 38.1 | 38.2 | 38.4 | 38.5 | 38.8 |
1.029 | 38.6 | 38.8 | 38.9 | 39 | 39.1 | 39.4 | 39.5 | 39.7 | 39.9 | 40.1 |
1.030 | 39.9 | 40.1 | 40.2 | 40.3 | 40.6 | 40.7 | 40.8 | 41 | 41.2 | 41.4 |
1.031 | 41.2 | 41.4 | 41.5 | 41.8 | 41.9 | 42 | 42.1 | 42.3 | 42.5 |