Use this easy and accurate grams to milligrams weight converter to calculate any quantity you may need to change. Many more unit converters available here!

The prefix ¨milli¨ signifies one thousand, which demonstrates how the **milligram** is a subunit for the **gram**, and both are measurements of mass. To use any of our weight converters, all you have to know is what units of mass you want to convert between; the rest is simple and will be done by our **online calculators**. This calculator is used for **g – mg conversions**.

## How to Convert from g to mg?

In order to calculate a quantity, enter in the box above the amount of grams and click ¨convert¨ for the result to appear in milligrams. Our **weight calculator for grams – milligrams** is accurate and easy to use. To work in the opposite direction, use our calculator to convert milligrams to grams.

## Formula to Convert Grams – Milligrams

The **formula of conversion** for grams and milligrams is **g x 1000 = mg **which is the same formula that our** g to mg calculator** uses automatically. For example, 1g = 1000mg and 3.7g = 3700mg.

## Measurements in Grams

The **gram** is a **unit of mass** used within the **metric system**. Most people will understand weight in grams, it is commonly used for groceries and everyday objects that are not heavy. For example, food products have regulations to give their contents in measurements of grams. This **g to mg calculator** will help you convert weights.

## Measurements in Milligrams

**Milligrams** are also a small **unit of measure** and can sometimes be confused with the microgram, although the microgram is a thousand times smaller. They too are used in the medical field for small doses and quantities. Our **gram – milligram converter** will help you change between the two units.

### How much is 1 Gram in Milligrams?

**1000 Milligrams**

`(1g = 1000mg)`

### How much are 2 Grams in Milligrams?

**2000 Milligrams**

`(2g = 2000mg)`

### How much are 3 Grams in Milligrams?

**3000 Milligrams**

`(3g = 3000mg)`

### How much are 4 Grams in Milligrams?

**4000 Milligrams**

`(4g = 4000mg)`

### How much are 5 Grams in Milligrams?

**5000 Milligrams**

`(5g = 5000mg)`

### How much are 10 Grams in Milligrams?

**10000 Milligrams**

`(10g = 10000mg)`

### How much are 15 Grams in Milligrams?

**15000 Milligrams**

`(15g = 15000mg)`

### How much are 20 Grams in Milligrams?

**20000 Milligrams**

`(20g = 20000mg)`

### How much are 25 Grams in Milligrams?

**25000 Milligrams**

`(25g = 25000mg)`

### How much are 30 Grams in Milligrams?

**30000 Milligrams**

`(30g = 30000mg)`

### How much are 50 Grams in Milligrams?

**50000 Milligrams**

`(50g = 50000mg)`

### How much are 100 Grams in Milligrams?

**100000 Milligrams**

`(100g = 100000mg)`

### How much are 200 Grams in Milligrams?

**200000 Milligrams**

`(200g = 200000mg)`

### How much are 500 Grams in Milligrams?

**500000 Milligrams**

`(500g = 500000mg)`

### How much are 1000 Grams in Milligrams?

**1000000 Milligrams**

`(1000g = 1000000mg)`