Question 1

What is 400 mg/L in ppm?

Accepted Answer

400 mg/L = 400 ppm. Use the converter on this page to convert to other concentration units instantly.

Question 2

How do you convert mg/L to ppm?

Accepted Answer

Formula: 1 ppm = 1 mg/L (aqueous, density ≈ 1 kg/L) · 1 ppb = 0.001 mg/L · 1% = 10,000 ppm. Multiply your mg/L value by the appropriate factor to get ppm, or use the interactive converter above.

Question 3

What is 400 ppm in mg/L?

Accepted Answer

400 ppm = 400 mg/L.

mg/L	ppm
385 mg/L	385
390 mg/L	390
395 mg/L	395
400	400
405 mg/L	405
410 mg/L	410
415 mg/L	415

400 mg/L to ppm

Formula