Question 1

What is 6.5 PSU in ppm?

Accepted Answer

6.5 PSU = 6,468.3 ppm. Use the converter on this page to convert to other salinity / tds units instantly.

Question 2

How do you convert PSU to ppm?

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 ppm, or use the interactive converter above.

Question 3

What is 6,468.3 ppm in PSU?

Accepted Answer

6,468.3 ppm = 6.5 PSU.

PSU	ppm
3.5 PSU	3,482.9
4.5 PSU	4,478.1
5.5 PSU	5,473.2
6.5	6,468.3
7.5 PSU	7,463.4
8.5 PSU	8,458.6
9.5 PSU	9,453.7

6.5 PSU to ppm

Formula