How many grams are in one milligram?
One milligram is exactly 0.001 grams.
Convert Milligram (mg) to Gram (g) instantly.
Choose how you want the answer displayed.
1mg=0.001g
| Quick Conversion | Converted |
|---|---|
| 1 mg | 0.001 g |
| 5 mg | 0.005 g |
| 10 mg | 0.01 g |
| 50 mg | 0.05 g |
| 100 mg | 0.1 g |
| 500 mg | 0.5 g |
| 1,000 mg | 1 g |
| 5,000 mg | 5 g |
A milligram is a metric mass unit equal to one thousandth of a gram.
Milligrams are common in medicine, nutrition, chemistry, lab work, and small-dose measurements.
A gram is a metric mass unit equal to 1000 milligrams.
Grams are widely used for food, packaging, recipes, lab work, parcels, and small product weights.
Mathematically, gram (g) = milligram (mg) multiplied by the conversion factor shown below.
1 mg = 0.001 g
1 g = 1,000 mg
1 mg x 0.001 = 0.001 g
The mass in gram (g) is the mass in milligram (mg) multiplied by 0.001.
mass(g) = mass(mg) x 0.001
Or:
g = mg x 0.001
Formula: value × 0.001
Example: 15 mg = 0.015 g
Convert 500 milligram to gram:
500 mg x 0.001 = 0.5 g
Convert 2,500 milligram to gram:
2,500 mg x 0.001 = 2.5 g
Precision note: Use the exact relationship of 1000 milligrams per gram. Preserve decimal grams when the milligram value is not a full gram.
1 mg = 0.001 g
1 g = 1,000 mg
If you are starting with gram instead, use the grams to milligrams page.
| Milligram [mg] | Gram [g] |
|---|---|
| 0.1 mg | 0.0001 g |
| 0.5 mg | 0.0005 g |
| 2 mg | 0.002 g |
| 3 mg | 0.003 g |
| 15 mg | 0.015 g |
| 20 mg | 0.02 g |
| 25 mg | 0.025 g |
| 75 mg | 0.075 g |
| 150 mg | 0.15 g |
| 250 mg | 0.25 g |
| 750 mg | 0.75 g |
| 2,500 mg | 2.5 g |
One milligram is exactly 0.001 grams.
One gram contains exactly 1000 milligrams.
Use grams when the amount is large enough for a cleaner value. Use milligrams when the small-unit precision matters.