Parts Per Billion Calculator
Calculate parts per billion (ppb) concentration. ppb = (mass of solute / total mass) x 10^9
PPB: (part / total) x 10^9
EPA Standards:
Parts Per Billion
1.0000 ppb
Parts Per Million
0.001000 ppm
Parts Per Trillion
1000.0000 ppt
ug/L (in water)
1.0000
Percent
0.000000100%
Conversions:
1 ppb = 0.001 ppm
1 ppb = 1,000 ppt
1 ppb = 1 ug/L (in water)
1 ppb = 1 ug/kg
What is Parts Per Billion?
Parts per billion (ppb) is a unit of concentration representing one part of solute per billion parts of solution. It is used for extremely dilute concentrations, commonly in environmental monitoring, water quality testing, and trace element analysis. For aqueous solutions, ppb is approximately equal to micrograms per liter (ug/L).
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
Formula Source: Chemistry: The Central Science
by Brown, LeMay, Bursten