Question 1

What is 4,455 ppm in PSU?

Accepted Answer

4,455 ppm = 4.477 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 4.477 PSU in ppm?

Accepted Answer

4.477 PSU = 4,455.2 ppm.

ppm	PSU
4,440 ppm	4.462
4,445 ppm	4.467
4,450 ppm	4.472
4,455	4.477
4,460 ppm	4.482
4,465 ppm	4.487
4,470 ppm	4.492

4,455 ppm to PSU

Formula