Question 1

What is 2.5 PSU in ppm?

Accepted Answer

2.5 PSU = 2,487.8 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 2,487.8 ppm in PSU?

Accepted Answer

2,487.8 ppm = 2.5 PSU.

PSU	ppm
1 PSU	995.1
1.5 PSU	1,492.7
2 PSU	1,990.2
2.5	2,487.8
3 PSU	2,985.4
3.5 PSU	3,482.9
4 PSU	3,980.5

2.5 PSU to ppm

Formula