Grams to Milligrams Converter
Convert Grams to Milligrams (g to mg) instantly, with the formula and a table of common values. Free, runs in your browser, nothing uploaded.
Everything happens on your own device. Nothing you type is ever sent anywhere.
Category
Result
1,000 mg
Formula
1 g = 1,000 mg
Common Grams to Milligrams Conversions
| Grams | Milligrams |
|---|---|
| 1 g | 1,000 mg |
| 2 g | 2,000 mg |
| 5 g | 5,000 mg |
| 10 g | 10,000 mg |
| 20 g | 20,000 mg |
| 50 g | 50,000 mg |
| 100 g | 100,000 mg |
| 500 g | 500,000 mg |
| 1,000 g | 1,000,000 mg |
This converter handles eight common unit categories - length, weight, temperature, volume, area, speed, data storage, and time - and updates the result instantly as you type, entirely in your browser. Most categories convert by a fixed ratio to a base unit (like meters for length or bytes for data), except temperature, which needs its own formula since 0°C isn't 0°F or 0 K.
Frequently asked questions
How do I convert Grams to Milligrams?
Multiply the value in g by 1,000: 1 g = 1,000 mg, so 10 g = 10,000 mg.
How do I convert Milligrams to Grams?
Multiply the value in mg by 0.001: 1 mg = 0.001 g, so 10 mg = 0.01 g.
Is the value I enter sent anywhere?
No. The conversion runs entirely in your browser, so nothing you type ever leaves your device.