Weight converter
Gram to Milligram Converter
Convert g to mg or reverse with one click. Type a value below for an instant result.
Gram g
Milligram mg
g → mg · runs in your browser, no server
How to convert gram to milligram
Gram (g) and Milligram (mg) both measure weight. Whether you are studying, traveling, cooking, or working on a project, converting between them should be fast and accurate.
Looking for the opposite direction? See our dedicated milligram to gram converter — same formula reversed, with content written for that direction.
The standard relationship used on this page means that 1 gram equals 1000 mg. Enter any number in the calculator — use the swap button to reverse the direction without leaving the page.
Converting 100 g gives 100000 mg. This is a practical reference when switching between gram and milligram for recipes, shipping labels, fitness tracking, and luggage limits.
Need milligram to gram instead? Try our Milligram to Gram converter. mg → g
g to mg conversion table
| g | mg |
|---|---|
| 1 | 1000 |
| 2 | 2000 |
| 5 | 5000 |
| 10 | 10000 |
| 25 | 25000 |
| 50 | 50000 |
| 100 | 100000 |
| 200 | 200000 |
| 500 | 500000 |
mg to g conversion table
Or click the swap button in the converter to switch from mg to g.
| mg | g |
|---|---|
| 1 | 0.001 |
| 4 | 0.004 |
| 8 | 0.008 |
| 16 | 0.016 |
| 32 | 0.032 |
| 64 | 0.064 |
| 128 | 0.128 |
| 150 | 0.15 |
| 200 | 0.2 |
Frequently asked questions
How many milligrams are in 1 gram? +
One gram equals 1000 mg. Use the converter above for any value — results are calculated locally with full precision.
How do I convert g to mg? +
Use the formula: mg = g × 1000. Enter your value in the calculator and the result appears instantly. Click the swap button to convert mg back to g.
How many grams are in 1 milligram? +
One milligram equals 0.001 g. Swap the converter direction to work backwards from mg to g.
What is 10 g in mg? +
10 g is 10000 mg. See the conversion table on this page for more common values.
When would I convert gram to milligram? +
This conversion is useful for recipes, shipping labels, fitness tracking, and luggage limits. ConvertHub runs entirely in your browser — no data is uploaded to any server.
Is gram to milligram the same as milligram to gram? +
They are inverse operations. This page focuses on g → mg with examples and tables for that direction. For mg → g, use our separate milligram to gram converter page.