Grams to mg Converter
1 gram = 1,000 milligrams. Used in pharmaceutical dosing and analytical chemistry.
Formula:1 g = 1,000 mg
⇄ Switch to mg To GramsGram to Milligram — common values
1 g1,000 mg
5 g5,000 mg
10 g10,000 mg
50 g50,000 mg
100 g100,000 mg
500 g500,000 mg
1,000 g1,000,000 mg
How to convert Grams To mg
To convert grams to mg, use the formula: 1 g = 1,000 mg. Enter any value in the input field above and the result appears instantly. Click the ⇄ button or use the “Switch to mg To Grams” link to reverse the conversion.
All conversions use precise mathematical constants validated against international SI standards (NIST and ISO 80000) and are accurate to 8 significant figures.
Frequently Asked Questions
What is the formula to convert Grams To mg?
1 g = 1,000 mg. 1 gram = 1,000 milligrams. Used in pharmaceutical dosing and analytical chemistry.
Is this converter free?
Yes — completely free, no registration required. Works instantly in your browser.
How do I convert mg To Grams?
Use the mg To Grams converter or click the ⇄ switch button above.
More Weight conversions
Need more weight conversions?
The full converter supports all unit combinations