CONVERSION
Concentration notation calculators
Express the same dimensionless proportion as percent, parts per million or parts per billion. The supplied amount must describe the same basis in both notations.
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One percent is ten thousand ppm and one ppm is one thousand ppb. Values are bounded to a fraction no larger than one; the tools do not convert mass, volume or molar bases or infer density, mg/L or exposure advice.
4 tools
- Percent to PPM Converter
Percent to PPM. Example: Value in %: 2.5 gives 25000 ppm. Converts dimensionless proportions on the same stated basis: percent=one part per hundred, ppm=one part per million and ppb=one part per billion. Maximum input must additionally keep the actual fraction at or below one. No conversion between mass/volume/molar bases, mg/L, density or exposure advice is inferred.
- PPB to PPM Converter
PPB to PPM. Example: Value in ppb: 2.5 gives 0.0025 ppm. Converts dimensionless proportions on the same stated basis: percent=one part per hundred, ppm=one part per million and ppb=one part per billion. Maximum input must additionally keep the actual fraction at or below one. No conversion between mass/volume/molar bases, mg/L, density or exposure advice is inferred.
- PPM to Percent Converter
PPM to Percent. Example: Value in ppm: 2.5 gives 0.00025 %. Converts dimensionless proportions on the same stated basis: percent=one part per hundred, ppm=one part per million and ppb=one part per billion. Maximum input must additionally keep the actual fraction at or below one. No conversion between mass/volume/molar bases, mg/L, density or exposure advice is inferred.
- PPM to PPB Converter
PPM to PPB. Example: Value in ppm: 2.5 gives 2500 ppb. Converts dimensionless proportions on the same stated basis: percent=one part per hundred, ppm=one part per million and ppb=one part per billion. Maximum input must additionally keep the actual fraction at or below one. No conversion between mass/volume/molar bases, mg/L, density or exposure advice is inferred.
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