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 9 - 18oC

S.G. Temperature oC
9 10 11 12 13 14 15 16 17 18
1.000 0 0.2 0.3
1.001 0.5 0.5 0.6 0.6 0.7 0.8 1 1.2 1.5 1.6
1.002 1.6 1.8 1.9 2 2.1 2.3 2.4 2.5 2.8 2.9
1.003 2.9 3.1 3.2 3.3 3.4 3.6 3.7 3.8 4.1 4.2
1.004 4.2 4.4 4.5 4.6 4.8 4.9 5 5.1 5.4 5.5
1.005 5.5 5.5 5.7 5.8 5.9 6.2 6.3 6.6 6.7 7
1.006 6.8 6.8 7 7.1 7.2 7.5 7.6 7.9 8 8.3
1.007 8.1 8.1 8.3 8.4 8.5 8.8 8.9 9.2 9.3 9.6
1.008 9.3 9.4 9.6 9.7 9.8 10 10.2 10.5 10.6 10.9
1.009 10.6 10.7 10.9 11 11.1 11.3 11.5 11.8 11.9 12.2
1.010 11.9 12 12.2 12.3 12.4 12.6 12.8 13.1 13.2 13.5
1.011 13.2 13.4 13.5 13.6 13.7 13.9 14.1 14.4 14.5 14.8
1.012 14.5 14.7 14.8 14.9 15 15.2 15.4 15.7 15.8 16.1
1.013 15.8 15.8 16 16.2 16.3 16.5 16.7 17 17.1 17.4
1.014 17 17.1 17.3 17.5 17.7 17.8 18 18.3 18.6 18.7
1.015 18.3 18.4 18.6 18.8 19 19.1 19.3 19.6 19.9 20
1.016 19.6 19.7 19.9 20.1 20.3 20.4 20.6 20.9 21.2 21.3
1.017 20.9 21 21.2 21.3 21.6 21.7 22 22.2 22.5 22.7
1.018 22.2 22.3 22.5 22.6 22.9 23 23.3 23.5 23.8 24
1.019 23.5 23.6 23.8 23.9 24.2 24.3 24.6 24.8 25.1 25.3
1.020 24.7 24.8 25.1 25.2 25.5 25.6 25.9 26.1 26.4 26.6
1.021 26 26.1 26.4 26.5 26.8 26.9 27.2 27.4 27.7 27.9
1.022 27.3 27.4 27.7 27.8 28.1 28.2 28.5 28.7 29 29.2
1.023 28.6 28.7 28.9 29.1 29.4 29.5 29.8 30 30.3 30.6
1.024 29.9 30 30.2 30.4 30.6 30.8 31.1 31.3 31.6 31.9
1.025 31.1 31.3 31.5 31.7 31.9 32.1 32.4 32.6 32.9 33.2
1.026 32.4 32.6 32.8 33 33.2 33.4 33.7 33.9 34.2 34.5
1.027 33.7 33.9 34.1 34.3 34.5 34.7 35 35.2 35.5 35.8
1.028 35 35.1 35.4 35.6 35.8 36 36.3 36.5 36.8 37.1
1.029 36.3 36.4 36.7 36.8 37.1 37.3 37.6 37.8 38.1 38.4
1.030 37.6 37.7 38 38.1 38.4 38.6 38.9 39.1 39.4 39.7
1.031 38.9 39 39.3 39.4 39.7 39.9 40.2 40.5 40.7 41