Concentration - Solution conversion
1 part/million (ppm) (ppm) equals 1 milligram/liter (mg/L). Enter any value below to convert from ppm to mg/L.
Enter a value and choose units. Results update instantly.
1 ppm = 1 mg/L
| Unit | Value |
|---|---|
| Kilogram/liter kg/L | 0.000001 |
| Gram/liter g/L | 0.001 |
| Milligram/liter mg/L | 1 |
| Part/million (ppm) ppm | 1 |
| Part/billion (ppb) ppb | 1,000 |
| Grain/gallon (US) gr/gal (US) | 0.0584178313 |
| Grain/gallon (UK) gr/gal (UK) | 0.0701568926 |
| Pound/gallon (US) lb/gal (US) | 0.0000000083 |
| Pound/gallon (UK) lb/gal (UK) | 0.00000001 |
| Pound/million gallon (US) lb/Mgal (US) | 0.0083454045 |
| Pound/cubic foot lb/ft³ | 0.0000000624 |
| Pound/cubic inch lb/in³ | 0 |
| Kilogram/cubic meter kg/m³ | 0.001 |
| Gram/cubic meter g/m³ | 1 |
| Milligram/cubic meter mg/m³ | 1,000 |
Formula
Use this relationship for a direct conversion:
2 ppm = 2 mg/L.
SI relationships follow the cited reference. Conventional and domain-specific factors use the established ConvertWin factor inventory; verify safety-critical work against the governing standard.
Quick reference
| Part/million (ppm) (ppm) | Milligram/liter (mg/L) |
|---|---|
| 0.01 | 0.01 |
| 0.1 | 0.1 |
| 1 | 1 |
| 2 | 2 |
| 5 | 5 |
| 10 | 10 |
| 25 | 25 |
| 50 | 50 |
| 100 | 100 |
| 1,000 | 1,000 |
From unit
Part/million (ppm) (ppm) is a unit of Concentration - Solution. 1 ppm = 1e-6 kg/L
Symbol: ppm
To unit
Milligram/liter (mg/L) is a metric prefix submultiple of the Kilogram/liter (kg/L). 1 kg/L = 1,000,000 mg/L.
Symbol: mg/L
Keep converting
Source
The SI framework is checked against NIST Guide for the Use of the International System of Units; conventional factors come from the extended factor inventory. Calculations use full internal precision before display rounding.
View the complete concentration - solution converterQuestions
Use the formula mg/L = ppm x 1. 1 part/million (ppm) (ppm) equals 1 milligram/liter (mg/L).
SI relationships follow the cited reference. Conventional and domain-specific factors use the established ConvertWin factor inventory; verify safety-critical work against the governing standard.
