Milligrams per liter to grams per liter

Type a value in milligrams per liter to see it in grams 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

  1. Type the value in the milligrams per liter box.
  2. Read the result in grams per liter as you type, and pick the precision you need.
  3. Swap the direction to convert back, or copy the result.

How it is calculated

g/L = mg/L × 0.001

Multiply the value in milligrams per liter by 0.001 to get grams per liter.

Example

To convert 25 mg/L to grams per liter: 25 × 0.001 = 0.025 g/L.

Conversion table

Milligrams per liter (mg/L)Grams per liter (g/L)
10.001
20.002
30.003
50.005
100.01
200.02
250.025
500.05
1000.1
2500.25
5000.5
1,0001

About the units

Milligram per liter
One thousandth of a gram per liter, used in drinking water tests and dissolved solids.
Gram per liter
Equal to exactly 1 kg/m³, used for gas densities and solution concentrations.

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 grams per liter are in one milligram per liter?

1 mg/L = 0.001 g/L exactly.

How do I convert milligrams per liter to grams per liter?

Use g/L = mg/L × 0.001. For example, 25 mg/L = 0.025 g/L.

How many milligrams per liter are in one gram per liter?

1 g/L = 1,000 mg/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.