PPM to Percent Converter
Convert parts per million (ppm) to percent (%). Type a number in either box and the result appears as you type.
Enter a number, for example 12.5
1 part per million = 0.0001 percent
Formula: % = ppm × 0.0001
How to convert parts per million to percent
1 part per million = 0.0001 percent
To convert parts per million to percent, multiply the value by 0.0001.
Example: 5 ppm × 0.0001 = 0.0005 %
PPM to Percent conversion table
| Part per million (ppm) | Percent (%) |
|---|---|
| 1 | 0.0001 |
| 2 | 0.0002 |
| 3 | 0.0003 |
| 4 | 0.0004 |
| 5 | 0.0005 |
| 10 | 0.001 |
| 15 | 0.0015 |
| 20 | 0.002 |
| 25 | 0.0025 |
| 50 | 0.005 |
| 75 | 0.0075 |
| 100 | 0.01 |
| 250 | 0.025 |
| 500 | 0.05 |
| 1,000 | 0.1 |
About parts per million and percent
Part per million (ppm)
One part in a million by mass, 1 mg per kg. For water and dilute solutions in water, 1 ppm equals 1 mg/L. Used for chlorine, TDS and nutrients.
Percent (%)
Grams per 100 milliliters (% w/v), so 1% is 10 g/L. Used for bleach strength, salt brines and lab solutions.
Frequently asked questions
What is 1 ppm in percent?
1 ppm = 0.0001 %.
What is 1 % in parts per million?
1 % = 10,000 ppm.
How do I convert parts per million to percent?
To convert parts per million to percent, multiply the value by 0.0001. 1 part per million = 0.0001 percent.