Percent to parts per million
Type a value in % to get it in ppm instantly.
10,000ppm
That's 20× as concentrated as the drink-drive limit, while salt in seawater is 3.5× stronger. In a liter of water that is about 10,000 mg.
Convert the other way: ppm to %
What it means
How strong is that?
For dilute water solutions 1 ppm equals 1 mg/L, because a liter of water weighs a kilogram. For air and other liquids that shortcut does not hold.
The math
How to convert % to ppm
To convert percent to parts per million, multiply by 10,000.
Example: 1 % × 10,000 = 10,000 ppm.
In the other direction, 1 ppm = 0.0001 %.
Every unit
Your concentration in every unit
Tables
% to ppm conversion table
| % | ppm |
|---|---|
| 0.001 % | 10 ppm |
| 0.01 % | 100 ppm |
| 0.1 % | 1,000 ppm |
| 0.5 % | 5,000 ppm |
| 1 % | 10,000 ppm |
| 2 % | 20,000 ppm |
| 5 % | 50,000 ppm |
| 10 % | 100,000 ppm |
| 25 % | 250,000 ppm |
| 50 % | 500,000 ppm |
| 75 % | 750,000 ppm |
| 100 % | 1,000,000 ppm |
ppm to % conversion table
| ppm | % |
|---|---|
| 0.001 ppm | 1×10⁻⁷ % |
| 0.01 ppm | 1×10⁻⁶ % |
| 0.1 ppm | 1×10⁻⁵ % |
| 0.5 ppm | 5×10⁻⁵ % |
| 1 ppm | 0.0001 % |
| 2 ppm | 0.0002 % |
| 5 ppm | 0.0005 % |
| 10 ppm | 0.001 % |
| 25 ppm | 0.0025 % |
| 50 ppm | 0.005 % |
| 75 ppm | 0.0075 % |
| 100 ppm | 0.01 % |
Quick answers
Quick answers
- How many ppm is 1 %?
- 1 % is 10,000 ppm.
- How many ppm is 10 %?
- 10 % is 100,000 ppm.
The units
About these units
Percent (%)
Parts per hundred. One percent is 10,000 ppm.
Parts per million (ppm)
One part in a million. Water quality, CO₂ levels and trace metals are reported in ppm.
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