Question 1

What is 55.5 PSU in mg/L?

Accepted Answer

55.5 PSU = 55,229.4 mg/L. Use the converter on this page to convert to other salinity / tds units instantly.

Question 2

How do you convert PSU to mg/L?

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 PSU value by the appropriate factor to get mg/L, or use the interactive converter above.

Question 3

What is 55,229.4 mg/L in PSU?

Accepted Answer

55,229.4 mg/L = 55.5 PSU.

PSU	mg/L
40.5 PSU	40,302.5
45.5 PSU	45,278.1
50.5 PSU	50,253.8
55.5	55,229.4
60.5 PSU	60,205
65.5 PSU	65,180.6
70.5 PSU	70,156.2

55.5 PSU to mg/L

Formula