Skip to content
Calculator Tools
Weight & Mass Converters

Milligram Converter

Convert milligrams (mg) to grams (g) instantly. Includes the exact conversion factor, formula and a quick reference table.

Enter values

Results update as you type.

Result

Grams

0.5 g

Micrograms
500,000 µg
Carats
2.5 ct
Kilograms
0.0005 kg
Metric tons
0.0000005 t
Ounces
0.017637 oz
Pounds
0.00110231 lb
Step-by-stepShow
  1. 500 mg × 0.001 = 0.5 g

Milligrams to Grams conversion table

Milligrams (mg)Grams (g)
0.10.0001
0.50.0005
10.001
20.002
50.005
100.01
200.02
500.05
1000.1
5000.5
1,0001

About the Milligram Converter

Convert milligrams (mg) to grams (g) instantly. Includes the exact conversion factor, formula and a quick reference table.

Also known as: mg to g, Milligrams to Grams, convert Milligrams to Grams, mg to g, mg to g, milligrams to grams.

How to use this calculator

  1. Enter value in milligrams.
  2. The result updates instantly as you type — press Calculate (or Enter) at any time.
  3. Open “Step-by-step” to see how the answer was worked out.
  4. Use Copy result or Share to save the answer or send a link with your inputs.

Formula

g = mg × 0.001

Worked example

Using the values pre-filled in the calculator above:

  • Value in milligrams = 500 mg

the calculator returns:

  • Grams: 0.5 g
  • Micrograms: 500,000 µg
  • Carats: 2.5 ct
  • Kilograms: 0.0005 kg

Working

  1. 500 mg × 0.001 = 0.5 g

Frequently asked questions

How many grams are in one milligram?

1 mg equals 0.001 g.