Question 1

What is 20.5 PSU in mg/L?

Accepted Answer

20.5 PSU = 20,400 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 20,400 mg/L in PSU?

Accepted Answer

20,400 mg/L = 20.5 PSU.

PSU	mg/L
14.5 PSU	14,429.3
16.5 PSU	16,419.5
18.5 PSU	18,409.8
20.5	20,400
22.5 PSU	22,390.3
24.5 PSU	24,380.5
26.5 PSU	26,370.8

20.5 PSU to mg/L

Formula