PPM Converter
Convert between parts per million (ppm), parts per billion (ppb), percent and mg/L (for dilute aqueous solutions).
Enter your values and press Calculate.
How to use the PPM Converter
Convert between parts per million (ppm), parts per billion (ppb), percent and mg/L (for dilute aqueous solutions). Enter your values above and press Calculate; the result appears instantly, and the formula used is shown below so you can check the working.
Formula
1% = 10,000 ppm = 10,000,000 ppb. For dilute water solutions, 1 ppm ≈ 1 mg/L.
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