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Gram to Milligram
Convert Gram to Milligram and get the exact value instantly.
1 g = 1000 mg
About this conversion
To convert Gram to Milligram, multiply the number of Gram by 1000.
Weight units split between the metric world (grams, kilograms) and imperial habits (pounds, ounces, stones), which is why shipping labels, recipes and gym plates rarely line up without a conversion.
Conversion table
| Gram (g) | Milligram (mg) |
|---|---|
| 1 g | 1000 mg |
| 2 g | 2000 mg |
| 5 g | 5000 mg |
| 10 g | 10000 mg |
| 100 g | 100000 mg |
How to use this converter
- Enter your Gram value
Type any number into the Gram field. It starts at 1 so you can read the rate straight away.
- Read the Milligram result
The amount in Milligram updates as you type, so there is no button to press and nothing to wait for.
- Swap or keep exploring
Use the swap control to flip the direction, or pick a related conversion from the list below.
Frequently asked
- How many Milligram are in one Gram?
- One Gram equals 1000 mg. Enter any amount above to get an exact figure for your own value.
- Is this converter accurate?
- Yes. It uses the exact international definition of each unit and computes on your device, so the only rounding is for display.
- Do you upload the numbers I enter?
- No. The Gram to Milligram conversion runs entirely in your browser tab, and nothing you type is sent to a server.
- Does it work on my phone?
- Yes. It runs in any modern mobile browser and keeps working offline once the page has loaded.
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