Question 1

What is 4,640 ppm in PSU?

Accepted Answer

4,640 ppm = 4.663 PSU. Use the converter on this page to convert to other salinity / tds units instantly.

Question 2

How do you convert ppm 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 ppm value by the appropriate factor to get PSU, or use the interactive converter above.

Question 3

What is 4.663 PSU in ppm?

Accepted Answer

4.663 PSU = 4,640.3 ppm.

ppm	PSU
4,625 ppm	4.648
4,630 ppm	4.653
4,635 ppm	4.658
4,640	4.663
4,645 ppm	4.668
4,650 ppm	4.673
4,655 ppm	4.678

4,640 ppm to PSU

Formula