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Unit Conversion Calculators
PPM Calculator (Parts Per Million)
Calculate a concentration in parts per million (ppm) from a solute mass and total solution mass.
Concentration
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About the PPM Calculator (Parts Per Million)
Parts per million (ppm) expresses a very small concentration as the number of parts of a substance per one million parts of the total solution or mixture, by mass or volume (as long as both quantities use the same unit).
Formula: PPM = (Solute Mass ÷ Total Solution Mass) × 1,000,000
Widely used in chemistry, water quality testing and environmental science to express trace concentrations like contaminants or dissolved minerals.
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