Grams to Milligrams
Convert grams to milligrams instantly. The relationship is fixed: 1 g = 1,000 mg (and 1 mg = 0.001 g). To go from grams to milligrams, multiply by 1,000.
For example, 10 g is 10,000 mg. Weight conversions matter for cooking and baking, shipping and luggage limits, body weight, and buying ingredients or produce sold by a different unit abroad.
Milligrams (mg)
1,000
1 g = 1,000 mg
ResultFull conversion table
| g | mg |
|---|---|
| 1 | 1,000 |
| 2 | 2,000 |
| 3 | 3,000 |
| 5 | 5,000 |
| 10 | 10,000 |
| 15 | 15,000 |
| 20 | 20,000 |
| 50 | 50,000 |
| 100 | 100,000 |
How to convert grams to milligrams
The formula is: mg = g × 1,000. Take your amount in grams, multiply by 1,000, and you have the result in milligrams. To reverse it, divide by 1,000 (or multiply by 0.001).
Use the table below for the most common values at a glance, or the calculator for any exact amount.
Frequently asked questions
How many milligrams are in 1 g?
1 g equals 1,000 mg.
How many milligrams is 10 g?
10 g is 10,000 mg.
What's the formula for grams to milligrams?
Multiply grams by 1,000: mg = g × 1,000.
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