Question 1

What is 503 PSU in mg/L?

Accepted Answer

503 PSU = 500,547.3 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 500,547.3 mg/L in PSU?

Accepted Answer

500,547.3 mg/L = 503 PSU.

PSU	mg/L
488 PSU	485,620.5
493 PSU	490,596.1
498 PSU	495,571.7
503	500,547.3
508 PSU	505,522.9
513 PSU	510,498.6
518 PSU	515,474.2

503 PSU to mg/L

Formula