Convert Milligrams to Grams
mg to g · weight & mass conversion
What are milligrams and grams?
A milligram is one-thousandth of a gram, used for medication doses and tiny quantities. A gram is one-thousandth of a kilogram, about the mass of a small paperclip. For scale: a 70 kg adult weighs about 154 lb, and a bag of sugar is usually 1 kg (2.2 lb).
How to convert milligrams to grams
1 mg = 0.001 g. To convert, multiply the number of milligrams by 0.001. For example, 5 mg = 0.005 g, and 20 mg = 0.02 g. To go the other way, multiply grams by 1,000 (since 1 g = 1,000 mg).
Milligrams to Grams conversion table
| Milligrams (mg) | Grams (g) |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 5 | 0.005 |
| 10 | 0.01 |
| 25 | 0.025 |
| 50 | 0.05 |
| 100 | 0.1 |
FAQ
What is 1 mg in g?
1 mg = 0.001 g. To convert any amount, multiply the number of milligrams by 0.001.
How do I convert grams back to milligrams?
Go the other way: 1 g = 1,000 mg, so multiply grams by 1,000 to get milligrams.
Is a milligram bigger than a gram?
No — 1 mg is the smaller unit, equal to 0.001 g (it takes 1,000 mg to make one g).
Are these weight & mass conversions exact?
They use the standard internationally-defined conversion factors. Results are rounded to six significant figures for readability, which is accurate enough for everyday and most technical use.