Skip to content
UnitChart

Convert grams to mg

Grams to milligrams. Enter a value to convert, or use the grams to mg chart further down the page.

1 g = 1,000 mg

1 gram equals 1,000 milligrams. Going the other way, 1 milligram = 0.001 grams.

Permalink to this conversion

Check this before you rely on it. This converter is provided free and without warranty, and its results are not professional advice.

How to convert grams to mg

To convert grams to milligrams, multiply the gram value by 1000. You can also divide by 0.001 to get the same answer.

mg = g × 1000

Worked example

Convert 15 g to milligrams:

15 g = 15,000 mg

grams to mg conversion chart

Use this grams to mg table for quick reference without typing anything.

grams to mg conversion table
grams (g)milligrams (mg)
0.01 g10 mg
0.1 g100 mg
1 g1,000 mg
2 g2,000 mg
3 g3,000 mg
5 g5,000 mg
10 g10,000 mg
20 g20,000 mg
50 g50,000 mg
100 g100,000 mg
1,000 g1,000,000 mg

What is a gram?

The gram is one thousandth of a kilogram. It is the practical unit of cooking, nutrition labels and postal weights in metric countries.

What is a milligram?

The milligram is one thousandth of a gram and is the standard unit for stating medicine dosages and micronutrient content.

Frequently asked questions

How many mg are in a gram?

1 grams equals 1,000 mg. Going the other way, 1 mg is 0.001 grams.

How do you convert grams to mg?

To convert grams to milligrams, multiply the gram value by 1000. You can also divide by 0.001 to get the same answer.

What is 10 grams in mg?

10 grams equals 10,000 mg. The conversion chart on this page lists the other values people look up most often.

Related weight conversions

Convert grams to other units

Convert other units to mg

Popular conversions

cm to inchesinches to cmkg to lbslbs to kgCelsius to FahrenheitFahrenheit to Celsiusmm to inchesinches to mmkm to milesmiles to kmmeters to feetfeet to meterscm to feetfeet to inchesinches to feetml to fl ozfl oz to mlliters to gallonsgallons to literscups to ml