What is the formula for PPM to PPB?

PPB = PPM × 1,000. One million is 1/1000 of a billion in ratio terms.

When is PPB preferred over PPM?

PPB is used when concentrations are very low (e.g. trace metals, some pollutants).

Convert parts per million (PPM) to parts per billion (PPB). Formula: PPB = PPM × 1,000.

PPM (parts per million)

What is the formula for PPM to PPB?: PPB = PPM × 1,000. One million is 1/1000 of a billion in ratio terms.
When is PPB preferred over PPM?: PPB is used when concentrations are very low (e.g. trace metals, some pollutants).
Is 1 ppm equal to 1000 ppb?: Yes. 1 ppm = 1,000 ppb.

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