Question 1

What is 4.5 g/kg in PSU?

Accepted Answer

4.5 g/kg = 4.522 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 4.522 PSU in g/kg?

Accepted Answer

4.522 PSU = 4.5 g/kg.

g/kg	PSU
3 g/kg	3.015
3.5 g/kg	3.517
4 g/kg	4.02
4.5	4.522
5 g/kg	5.024
5.5 g/kg	5.527
6 g/kg	6.029

4.5 g/kg to PSU

Formula