Question 1

What is 639 g/kg in PSU?

Accepted Answer

639 g/kg = 642.131 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 642.131 PSU in g/kg?

Accepted Answer

642.131 PSU = 638.9999 g/kg.

g/kg	PSU
624 g/kg	627.058
629 g/kg	632.082
634 g/kg	637.107
639	642.131
644 g/kg	647.156
649 g/kg	652.18
654 g/kg	657.205

639 g/kg to PSU

Formula