## Metric units of mass

Mass is used to measure the weight of an object. For example, you are measuring the mass of your body when you step on to a scale.

In the metric system of measurement, the most common units of mass are the gram and kilogram.

### How much is a gram?

A small paperclip has a mass of about $1$ gram:

### How much is a kilogram?

A wooden baseball bat has a mass of about $1$ kilogram:

*Want to learn more about metric units of mass? Check out this video.*

## Converting kilograms to grams

To convert kilograms to grams we multiply the number of kilograms by $\greenD{1,000}$.

**Example:**

## Converting grams to kilograms

To convert grams to kilograms we divide the number of grams by $\greenD{1000}$.

**Example:**

*Want to learn more about converting between metric units of mass? Check out this video.*

## Practice set 2: Converting units of mass

*Want to try more problems like this? Check out these exercises:*

Convert larger units to smaller units

Converting between units