Question 1

What is 21.5 g/kg in PSU?

Accepted Answer

21.5 g/kg = 21.605 PSU. Use the converter on this page to convert to other salinity / tds units instantly.

Question 2

How do you convert g/kg to PSU?

Accepted Answer

Formula: 1 g/kg ≈ 1.0049 PSU · 1 mg/L ≈ 0.001 PSU · 1 ppm ≈ 0.001 PSU (dilute aqueous approximation). Multiply your g/kg value by the appropriate factor to get PSU, or use the interactive converter above.

Question 3

What is 21.605 PSU in g/kg?

Accepted Answer

21.605 PSU = 21.4997 g/kg.

g/kg	PSU
15.5 g/kg	15.576
17.5 g/kg	17.586
19.5 g/kg	19.596
21.5	21.605
23.5 g/kg	23.615
25.5 g/kg	25.625
27.5 g/kg	27.635

21.5 g/kg to PSU

Formula