Instant · Precise · Universal
34 units available
6 categories total
To convert mg to grams: divide by 1,000. To convert mg to grains: multiply by 0.01543.
1 mg = 0.001 g = 10⁻⁶ kg = 1,000 µg. There are 1,000 mg in 1 gram.
For example, 1 Milligram (mg) = 1.000000e-9 Megagram (Mg).
| Milligram (mg) | Megagram (Mg) |
|---|---|
| 0.1 | 1.000000e-10 |
| 0.5 | 5.000000e-10 |
| 1 | 1.000000e-9 |
| 2 | 2.000000e-9 |
| 5 | 5.000000e-9 |
| 10 | 1.000000e-8 |
| 25 | 2.500000e-8 |
| 50 | 5.000000e-8 |
| 100 | 1.000000e-7 |
| 500 | 5.000000e-7 |
| 1000 | 0.000001 |
The milligram is a unit of mass equal to one thousandth of a gram (10⁻³ g) or one millionth of a kilogram.
1 mg = 0.001 g = 10⁻⁶ kg = 1,000 µg. There are 1,000 mg in 1 gram.
To convert mg to grams: divide by 1,000. To convert mg to grains: multiply by 0.01543.
Drug tablets (e.g., aspirin 325 mg), caffeine content (coffee ~95 mg/cup), sodium on food labels, and gemstone weights.
A single grain of sand weighs about 1 mg. The lethal dose of pure caffeine is roughly 10,000 mg (10 g) for an average adult.
Confusing mg with mL — milligrams measure mass, milliliters measure volume. They're only equal for water (density = 1 g/mL).
A standard paper clip weighs about 1,000 mg (1 g). Use this to visualize what a milligram fraction looks like.



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