Question 1

What is 401.5 PSU in mg/L?

Accepted Answer

401.5 PSU = 399,542.2 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 399,542.2 mg/L in PSU?

Accepted Answer

399,542.2 mg/L = 401.5 PSU.

PSU	mg/L
386.5 PSU	384,615.4
391.5 PSU	389,591
396.5 PSU	394,566.6
401.5	399,542.2
406.5 PSU	404,517.9
411.5 PSU	409,493.5
416.5 PSU	414,469.1

401.5 PSU to mg/L

Formula