PPM Calculator
Convert between parts per million, mg/L and percent. The result updates as you type, with the working underneath so you can check it.
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5 ppm
- In dilute water solutions 1 mg/L ≈ 1 ppm (density about 1 kg/L). 1% = 10,000 ppm.
Good to know: 1% = 10,000 ppm
Please note: For study and planning. Check calculations independently before using results with chemicals, electricity, pressure or machinery, and follow safety data sheets, manufacturer instructions and local regulations.
About this tool
Formula
1% = 10,000 ppm
Questions people ask
How many ppm is 1 mg/L?
In dilute water solutions 1 mg/L is about 1 ppm, because a litre of water weighs about a kilogram.
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How we calculate this
We use the standard published formula or definition for this calculation, and we show the working so you can check it.
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