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Parts per Billion (ppb) to PPM

Convert ppb to ppm for environmental testing and trace contaminant analysis.

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Formula: ppb × 0.001 = ppm
How to use this converter
  1. 1Enter ppb.
  2. 2PPM appears instantly.
Common questions
50 ppb = 0.05 ppm.
Heavy metals like lead and arsenic in water. EPA lead action level is 15 ppb.
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