Question 1

What is 1,255 ppm in PSU?

Accepted Answer

1,255 ppm = 1.261 PSU. Use the converter on this page to convert to other salinity / tds units instantly.

Question 2

How do you convert ppm to PSU?

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 ppm value by the appropriate factor to get PSU, or use the interactive converter above.

Question 3

What is 1.261 PSU in ppm?

Accepted Answer

1.261 PSU = 1,254.9 ppm.

ppm	PSU
1,240 ppm	1.246
1,245 ppm	1.251
1,250 ppm	1.256
1,255	1.261
1,260 ppm	1.266
1,265 ppm	1.271
1,270 ppm	1.276

1,255 ppm to PSU

Formula