Gram to Milligram Converter

1 Gram = 1000 Milligrams. To convert Grams to Milligrams, multiply by 1000.

Result updates as you type
Recent: 1 Gram = 1000 Milligram

Formula

To convert Grams to Milligrams, multiply the value by 1000. One Gram equals 1000 Milligrams.

mg = g × 1000

Worked examples

  • 1 Gram = 1000 Milligrams
  • 5 Grams = 5000 Milligrams
  • 10 Grams = 10000 Milligrams
  • 100 Grams = 100000 Milligrams

Grams to Milligrams table

Grams (g) Milligrams (mg)
1 1000
2 2000
3 3000
4 4000
5 5000
10 10000
25 25000
50 50000
100 100000
250 250000
500 500000
1000 1000000

About Gram and Milligram

Both the Gram (g) and the Milligram (mg) measure weight / mass. One Gram is equal to 1000 Milligrams, so you can convert any measurement by multiplying by 1000. The calculator above updates instantly, and the reference table lists common Gram-to-Milligram values for quick lookups.

Unit definitions

Gram (g)
The Gram (g) is the reference unit for weight / mass in this converter — every other weight / mass unit is defined relative to it.
Milligram (mg)
The Milligram (mg) is a unit of weight / mass equal to 0.001 Grams.

Frequently asked questions

How do you convert Grams to Milligrams?
Multiply the number of Grams by 1000. For example, 1 Gram × 1000 = 1000 Milligrams.
How many Milligrams are in a Gram?
There are 1000 Milligrams in one Gram.
What is 10 Grams in Milligrams?
10 Grams is equal to 10000 Milligrams.
How do you convert Milligrams back to Grams?
Multiply the number of Milligrams by 0.001 to get Grams. One Milligram equals 0.001 Grams.