Milligram to Gram (Mg to g) : Conversion Calculator

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This article provides the conversion calculator to convert mg to g. It also consists of detailed information and relations regarding grams and milligrams.





1. What is a Milligram (mg)?

A unit of measurement of mass in the metric system equal to one-thousandth of a gram.

Symbol: mg



2. What is a Gram (g)?

A unit of measurement of mass in the International System of Standards (SI) equal to one-thousandth of a kilogram.

Symbol: g

Formula: 1 g = 1000 mg



3. Conversion Formula of Milligram to Gram (mg to g)

To convert milligrams to grams: 

Grams = Milligrams / 1000


To convert grams to milligrams: 

Milligrams = Grams * 1000



4. How do You Convert Milligram to Gram (mg to g)?  

To convert milligrams into grams, you should divide the milligrams by 1000.

For example: 

Convert 2000 mg to g

= 2000/1000

= 2 g



5. How do you convert Grams to milligrams (g to mg)?  

To convert grams into milligrams, you should multiply the gram by 1000.

For example: 

Convert 20g to mg

= 20 * 1000

= 20000 g



6. FAQs

a. How do I convert milligrams to grams?

Multiply the given values in milligrams by 0.001 to get the value in grams.


b. Is 1g the same as 100mg?

No, 1 g is not 100 mg; it’s 1000 mg.


c. Which is bigger: mg or grams?

Grams are bigger; 1 g = 1000 mg.


d. Is 1000 mg the same as 1 gram?

Yes, 1000 mg is equal to 1 gram.


e. What is a gram?

In the SI system, a gram is a unit for measuring mass, equal to one-thousandth of a kilogram (denoted by ‘g’).



7. Conversion Table of Milligrams to Grams

Milligrams (mg)Grams (g)



8. History About Gram 

Origin and Adoption in French National Convention (1795):

The term “gramme” was adopted by the French National Convention in 1795 during the revision of the metric system.

It replaced “gravet,” introduced in 1793, and a base measure called “grave.”

The definition of the gram remained the weight of a cubic centimeter of water.


Etymology and Meaning:

The French term “gramme” was derived from the Late Latin term “gramma.”

The Late Latin term “gramma” itself came from the Greek word “γράμμα” (grámma), meaning “letter.”

In Late Antiquity, “gramma” had a specialized meaning of “one twenty-fourth part of an ounce” (two oboli), approximately 1.14 modern grams.

This specific use of the term is found in a poem about weights and measures composed around 400 AD.


Historical Usage in Greek and Latin:

Evidence suggests that the Greek term “γράμμα” was used in a similar sense in the 4th Century and survived into Medieval Greek.

The Latin term did not remain in everyday use during Medieval Latin but was later recovered in Renaissance scholarship.


Base Unit of Mass in the 19th Century:

The gram served as the base unit of mass in the 19th-century centimeter–gram–second system of units (CGS).


Transition to MKS System:

The CGS system co-existed with the meter–kilogram–second system of units (MKS) proposed in 1901.

In 1960, the kilogram was chosen as the base unit for mass in the SI system, displacing the gram from its position as the base unit.

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a. Wikipedia

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Verified Article By Er. Madhu Krishna Poudel
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