mg/L to PPM Converter
Convert milligrams per liter (mg/L) to parts per million (ppm). Type a number in either box and the result appears as you type.
Enter a number, for example 12.5
1 milligram per liter = 1 part per million
Formula: ppm = mg/L × 1
How to convert milligrams per liter to parts per million
1 milligram per liter = 1 parts per million
To convert milligrams per liter to parts per million, multiply the value by 1.
Example: 5 mg/L × 1 = 5 ppm
mg/L to PPM conversion table
| Milligram per liter (mg/L) | Part per million (ppm) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 5 |
| 10 | 10 |
| 15 | 15 |
| 20 | 20 |
| 25 | 25 |
| 50 | 50 |
| 75 | 75 |
| 100 | 100 |
| 250 | 250 |
| 500 | 500 |
| 1,000 | 1,000 |
About milligrams per liter and parts per million
Milligram per liter (mg/L)
Milligrams in one liter. The standard unit in water quality reports. For water, 1 mg/L equals 1 ppm.
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.
Frequently asked questions
What is 1 mg/L in parts per million?
1 mg/L = 1 ppm.
What is 1 ppm in milligrams per liter?
1 ppm = 1 mg/L.
How do I convert milligrams per liter to parts per million?
To convert milligrams per liter to parts per million, multiply the value by 1. 1 milligram per liter = 1 parts per million.