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A quick way to understand who this helps, what it solves, and where it connects next.
Anyone converting concentration units.
Using the parts-per converter without installing anything or signing up.
Capture parts-per-converter intent with a fast, browser-side tool that runs 100% locally.
Cleanor Labs
These sections explain the job in plain language and set expectations for what the tool should do well.
The Parts-Per Converter changes a concentration between percent, per mille, ppm, ppb, ppt and the practical equivalents mg/kg and mg/L, all in your browser. Enter a value, pick the units, and read the result alongside a full table of every unit. It is useful for water quality, lab work and material specs, where 1 mg/kg equals 1 ppm by mass and 1 mg/L is about 1 ppm for dilute aqueous solutions. Nothing is uploaded, so it works offline and keeps your data private.
Short answers for the questions people usually have before trying a utility like this.
One percent equals 10,000 ppm, because a percent is one part per hundred and ppm is parts per million. Enter any percentage to see the exact ppm, ppb and ppt values.
For dilute aqueous solutions, 1 mg/L is approximately 1 ppm because a litre of water weighs about 1 kilogram. The converter treats them as equal, which is the standard assumption in water chemistry.
Here ppt means parts per trillion (1e-12), used for trace concentrations. Note that ppt is sometimes also written for parts per thousand; this tool uses the parts per trillion meaning.
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Convert concentration units: percent, per mille, ppm, ppb, ppt, plus mg/kg and mg/L equivalents.
1 % = 10,000 ppm
| Unit | Value |
|---|---|
| Percent (%) | 1 |
| Per mille (‰) | 10 |
| Parts per million (ppm) | 10,000 |
| Parts per billion (ppb) | 10,000,000 |
| Parts per trillion (ppt) | 10,000,000,000 |
| Milligram per kilogram (mg/kg) | 10,000 |
| Milligram per litre (mg/L) | 10,000 |
Converted locally in your browser.