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  28.5 - 33oC

S.G. Temperature oC
28.5 29 29.5 30 30.5 31 31.5 32 32.5 33
0.998 0.7 0.8 1.1 1.2 1.5 1.6 1.9 2 2.3 2.4
0.999 2 2.3 2.4 2.5 2.8 2.9 3.2 3.4 3.6 3.8
1.000 3.4 3.6 3.7 4 4.1 4.4 4.5 4.8 4.9 5.1
1.001 4.8 4.9 5.1 5.1 5.4 5.5 5.8 5.9 6.2 6.4
1.002 6.1 6.3 6.4 6.6 6.8 7 7.2 7.5 7.6 7.9
1.003 7.4 7.6 7.7 8 8.1 8.4 8.5 8.8 9.1 9.2
1.004 8.8 8.9 9.2 9.3 9.6 9.7 10 10.1 10.4 10.5
1.005 10.1 10.2 10.5 10.6 10.9 11 11.3 11.5 11.7 11.9
1.006 11.4 11.7 11.8 12 12.2 12.4 12.6 12.8 13.1 13.2
1.007 12.8 13 13.1 13.4 13.6 13.7 14 14.1 14.4 14.7
1.008 14.1 14.3 14.5 14.7 14.9 15.2 15.3 15.6 15.7 16
1.009 15.4 15.7 15.8 16.1 16.2 16.5 16.6 16.9 17.1 17.3
1.010 16.7 17 17.1 17.4 17.5 17.8 18 18.2 18.4 18.7
1.011 18.2 18.3 18.6 18.7 19 19.1 19.3 19.6 19.7 20
1.012 19.5 19.6 19.9 20.1 20.3 20.5 20.6 20.9 21.2 21.3
1.013 20.8 21 21.2 21.4 21.6 21.8 22.1 22.2 22.5 22.7
1.014 22.2 22.3 22.6 22.7 23 23.1 23.4 23.6 23.8 24
1.015 23.5 23.6 23.9 24 24.3 24.6 24.7 24.9 25.2 25.3
1.016 24.8 25.1 25.2 25.5 25.6 25.9 26.1 26.3 26.5 26.8
1.017 26.1 26.4 26.5 26.8 27 27.2 27.4 27.7 27.8 28.1
1.018 27.6 27.7 27.9 28.1 28.3 28.5 28.7 29 29.2 29.4
1.019 28.9 29 29.2 29.5 29.6 29.9 30 30.3 30.6 30.8
1.020 30.2 30.4 30.6 30.8 30.9 31.2 31.5 31.6 31.9 32.1
1.021 31.5 31.7 32 32.1 32.4 32.5 32.8 33 33.3 33.4
1.022 32.9 33 33.3 33.4 33.7 33.9 34.1 34.3 34.6 34.8
1.023 34.2 34.5 34.6 34.8 35 35.2 35.5 35.6 35.9 36.2
1.024 35.5 35.8 35.9 36.2 36.4 36.5 36.8 37.1 37.2 37.5
1.025 36.8 37.1 37.2 37.5 37.7 37.8 38.1 38.4 38.6 38.8
1.026 38.2 38.4 38.6 38.8 39 39.3 39.4 39.7 39.9 40.2
1.027 39.5 39.8 39.9 40.2 40.3 40.6 40.8 41 41.2 41.5
1.028 40.8 41.1 41.2 41.5