Milligram to Gram Converter (mg to g)
1 milligram = 0.001 gram. A gram is exactly 1,000 milligrams.
⇄ Swap
Result
500 mg = 0.5 g
How to convert milligram to gram
A gram is exactly 1,000 milligrams. Milligrams measure medicine doses, vitamins and trace ingredients, and grams are the next unit up on kitchen and lab scales.
Formula
g = mg × 0.001
Worked example
500 mg × 0.001 = 0.5 g
Milligram to Gram quick-reference table
| Milligram (mg) | Gram (g) |
|---|---|
| 1 mg | 0.001 g |
| 10 mg | 0.01 g |
| 100 mg | 0.1 g |
| 250 mg | 0.25 g |
| 500 mg | 0.5 g |
| 1,000 mg | 1 g |
Real-life examples
A 500 mg tablet is 0.5 g, and a 2,000 mg daily dose is 2 g.
Frequently asked questions
How many mg are in a gram?
There are exactly 1,000 milligrams in 1 gram.
Is 1000 mg the same as 1 g?
Yes. 1,000 mg equals 1 g exactly.
What is 1 milligram in gram?
1 milligram = 0.001 gram (mg to g).
What is the formula to convert mg to g?
g = mg × 0.001. For example, 500 mg × 0.001 = 0.5 g.
How do I convert g back to mg?
Use the reverse converter: 1 gram = 1,000 milligram. Check: 0.5 g converts back to 500 mg.
Reverse conversion
Need the other direction? Gram to Milligram converter (g to mg): 1 gram = 1,000 milligram.
Related weight conversions
- Kilogram to Pound converter
- Pound to Kilogram converter
- Stone to Kilogram converter
- Kilogram to Stone converter
- Gram to Ounce converter
- Ounce to Gram converter