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