Question 1

What is 1,440 ppm in PSU?

Accepted Answer

1,440 ppm = 1.447 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 1.447 PSU in ppm?

Accepted Answer

1.447 PSU = 1,439.9 ppm.

ppm	PSU
1,425 ppm	1.432
1,430 ppm	1.437
1,435 ppm	1.442
1,440	1.447
1,445 ppm	1.452
1,450 ppm	1.457
1,455 ppm	1.462

1,440 ppm to PSU

Formula