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Grams to Milligrams converter

Convert g to mg instantly. Type any value and get the result in milligrams. 1 g = 1,000 mg.

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Weight›g → mg
From
To
result below ↓
1 g=
1,000mg
formula1 g = 1,000 mg

Common grams → milligrams

=1,000 mg
=2,000 mg
=5,000 mg
=10,000 mg
=20,000 mg
=50,000 mg
=100,000 mg
=500,000 mg
=1,000,000 mg

Need a different value? .

Convert the other way
Milligrams to Grams

How to convert grams to milligrams

To convert grams to milligrams, multiply the value by 1,000.

Formula
mg = g × 1,000

For example:

  • →5 g = 5,000 mg
  • →100 g = 100,000 mg

Quick reference

  • ▸1 g = 1,000 mg
  • ▸1 mg = 0.001 g

When you need to convert g to mg

  • ·Cooking and baking — recipes written in grams need converting to ounces or cups.
  • ·Shipping — most parcel services charge by weight, in pounds or kilograms.
  • ·Body weight — converting between kg, lb, and stones for fitness tracking.
  • ·Travel and luggage limits — airline allowances differ by country.
  • ·Groceries — produce sold by weight in different markets.

Frequently asked

How many milligrams are in 1 gram?
One gram equals 1,000 milligrams.
How do I convert g to mg in my head?
Multiply the value in grams by 1,000 to get milligrams.
What is the formula for grams to milligrams?
mg = g × 1,000.
What is the reverse — how many grams in 1 milligram?
One milligram equals 0.001 grams.

Related conversions

Milligrams to Grams
1 mg = 0.001 g
Grams to Kilograms
1 g = 0.001 kg
Grams to Ounces
1 g = 0.035274 oz
Grams to Pounds
1 g = 0.00220462 lb
Kilograms to Milligrams
1 kg = 1,000,000 mg
Ounces to Milligrams
1 oz = 28,349.5 mg
Pounds to Milligrams
1 lb = 453,592 mg
Stones to Milligrams
1 st = 6,350,290 mg
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