Question 1

What is 399 PSU in mg/L?

Accepted Answer

399 PSU = 397,054.4 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 397,054.4 mg/L in PSU?

Accepted Answer

397,054.4 mg/L = 399 PSU.

PSU	mg/L
384 PSU	382,127.6
389 PSU	387,103.2
394 PSU	392,078.8
399	397,054.4
404 PSU	402,030.1
409 PSU	407,005.7
414 PSU	411,981.3

399 PSU to mg/L

Formula