Question 1

What is 42 ppb in ppm?

Accepted Answer

42 ppb = 0.042 ppm. Use the converter on this page to convert to other concentration units instantly.

Question 2

How do you convert ppb 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 ppb value by the appropriate factor to get ppm, or use the interactive converter above.

Question 3

What is 0.042 ppm in ppb?

Accepted Answer

0.042 ppm = 42 ppb.

ppb	ppm
36 ppb	0.036
38 ppb	0.038
40 ppb	0.04
42	0.042
44 ppb	0.044
46 ppb	0.046
48 ppb	0.048

42 ppb to ppm

Formula