Convert Grams to milligrams
1 gram = 1,000 milligrams · mg = g × 1,000
When you need this conversion
This conversion goes from grams, the metric unit for cooking ingredients and small items, to milligrams, the unit used for medication doses and nutrition labels. Both measure the same physical quantity, so the conversion is exact — the difference is which unit your source, tool, or region happens to use.
Grams to milligrams conversion table
| Grams (g) | Milligrams (mg) |
|---|---|
| 1 g | 1,000 mg |
| 2 g | 2,000 mg |
| 3 g | 3,000 mg |
| 5 g | 5,000 mg |
| 10 g | 10,000 mg |
| 15 g | 15,000 mg |
| 20 g | 20,000 mg |
| 25 g | 25,000 mg |
| 50 g | 50,000 mg |
| 75 g | 75,000 mg |
| 100 g | 100,000 mg |
| 250 g | 250,000 mg |
| 500 g | 500,000 mg |
| 1,000 g | 1,000,000 mg |
The formula
mg = g × 1,000Because both units measure weight, the conversion is a single multiplication by a fixed factor. That factor never changes, so the result is exact.
Convert the other way
Milligrams to grams →Related weight conversions
- Grams to ounces
- Grams to carats
- Kilograms to pounds
- Kilograms to stones
- Metric tons to US tons
- Ounces to grams
- Pounds to kilograms
- Stones to kilograms
- US tons to metric tons
- Carats to grams
- Grams to kilograms
- Grams to metric tons
Frequently asked questions
- How many milligrams are in a gram?
- There are 1,000 milligrams in 1 gram. The formula is mg = g × 1,000.
- How do you convert grams to milligrams?
- Use the formula mg = g × 1,000. For example, 10 grams equals 10,000 milligrams.
- Is the grams to milligrams conversion exact?
- Yes. Grams and milligrams are both units of weight, related by an exact defined factor. Displayed results are rounded for readability.
- What is g short for?
- g is the standard symbol for gram. mg is the symbol for milligram.