Grams per liter to milligrams per liter
Type a value in grams per liter to see it in milligrams per liter straight away, or type in the second box to convert back.
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Processing and privacy: The result is calculated inside your browser and your data is not sent to any server.
How to use it
- Type the value in the grams per liter box.
- Read the result in milligrams per liter as you type, and pick the precision you need.
- Swap the direction to convert back, or copy the result.
How it is calculated
mg/L = g/L × 1,000
Multiply the value in grams per liter by 1,000 to get milligrams per liter.
Example
To convert 25 g/L to milligrams per liter: 25 × 1,000 = 25,000 mg/L.
Conversion table
| Grams per liter (g/L) | Milligrams per liter (mg/L) |
|---|---|
| 1 | 1,000 |
| 2 | 2,000 |
| 3 | 3,000 |
| 5 | 5,000 |
| 10 | 10,000 |
| 20 | 20,000 |
| 25 | 25,000 |
| 50 | 50,000 |
| 100 | 100,000 |
| 250 | 250,000 |
| 500 | 500,000 |
| 1,000 | 1,000,000 |
About the units
- Gram per liter
- Equal to exactly 1 kg/m³, used for gas densities and solution concentrations.
- Milligram per liter
- One thousandth of a gram per liter, used in drinking water tests and dissolved solids.
Limits and caveats
- Results are rounded for display and computed with the browser's floating point precision (about 15 significant digits).
- Both unit factors are exact by their official definitions.
Questions about this tool
How many milligrams per liter are in one gram per liter?
1 g/L = 1,000 mg/L exactly.
How do I convert grams per liter to milligrams per liter?
Use mg/L = g/L × 1,000. For example, 25 g/L = 25,000 mg/L.
How many grams per liter are in one milligram per liter?
1 mg/L = 0.001 g/L.
How do I find the weight of a liquid from its density?
Multiply density by volume in matching units: 2 liters of oil at 0.92 kg/L weigh 1.84 kilograms.
Is the density of water exactly 1 g/cm³?
Nearly: pure water at about 4 °C is close to 0.99997 g/cm³ and gets slightly lighter as it warms. Using 1 g/cm³ is a fine approximation for most purposes.