Convert 500 mg to g

How to convert milligrams to grams

1. Formula: grams = milligrams × 0.001
2. Put in the value: 500 milligrams.
3. Result: 0.5 grams.

Milligrams to grams table

Converting the other way: grams to milligrams

milligrams = grams × 1,000. So 0.5 grams is back to 500 milligrams; one gram is 1,000 milligrams. See the grams to milligrams table.

Quick estimate in your head

For a rough answer, multiply by about 0.001: 500 × 0.001 ≈ 0.5 g, against the exact 0.5 g (0.0% out). Good enough to check that a calculated result is sensible.

Common mistakes

The usual slip is using the factor the wrong way round. A milligram is smaller than a gram, so the number of grams must come out smaller than the number of milligrams. If your answer goes the other way, divide instead of multiplying.

About the units

Milligram (mg) and gram (g) are both units of mass. One milligram equals 0.001 grams, and one gram equals 1,000 milligrams. Results on this page are rounded for display; the conversion itself uses the exact definitions.

Mass conversions come up in cooking and baking, shipping and luggage limits, body weight, medicine doses and buying food by weight.

500 milligrams in other units

The most readable unit for this amount is carats (2.5).

• 0.5 g
• 0.0005 kg
• 5e-7 t
• 0.01763698 oz
• 0.00110231 lb
• 0.00007874 st
• 5.511557e-7 ton
• 2.5 ct

How this answer was calculated

The result is worked out from the numbers in this page's address when the page is opened, using exact arithmetic wherever possible and rounding only for display. Nothing is copied from a printed table. If you think an answer is wrong, please tell us through the contact page and we will check it.

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