# Millimeter Definition

In Mathematics, different units are used to measure the length of a particular thing, object, or place. A millimeter is one of those units that are used to measure lengths. Generally, the unit to measure length is a meter.

The millimeter is the one-thousand part of the meter. The word “Milli” has been derived from the Latin word “Mille” which means one-thousand part. That is why this unit of length is given the name millimeter because it is one of the thousand parts of the meter.

Note:

Read about Millimeter to Inches here in detail.

1 meter = 1000 millimeter

## Representation of Millimeter

Every unit has a specific symbol to represent them in short form. The millimeter is shown by “mm”. The “mm” will be written just on the right side of the number representing the length of the object. Let us show you here how it is written.

100 millimeter = 100 mm

On a scale, you can see multiple lines dividing every centimeter into 10 small parts. Every part represents one millimeter on the scale.

### Other units of length & conversion to mm

As mentioned above, multiple units are used to measure the length of any object. Here is the list of those units and their conversion to the millimeter.

Centimeter

The centimeter is a bigger unit than the millimeter that comes into the sequence. There are 10 millimeters in 1 centimeter. Here is the Mathematical representation of the relationship between these units.

1 centimeter = 10 millimeters

Also,

1 millimeter = 1/10 centimeters

Note:

Example 1:

Convert 100 centimeters into millimeters.

Solution:

As we know,

1 centimeter = 10 millimeters

So,

100 centimeters = 100 x 10 millimeters
= 1000 millimeters

### Decimeter

Another unit of length is Decimeter. .

1 Decimeter = 100 millimeters

Also, it can be said that 1 millimeter is one of the hundred parts of the decimeter.

1 millimeter = 1/100 decimeters

Example 2:

Convert 5000 millimeters into Decimeters.

Solution:

As we know,

1 millimeter = 1/100 decimeters

So,

5000 millimeters = 5000/100 decimeters
= 50 decimeters

### Meter

It is the standard unit of length that is used for average lengths. 1 meter means that it has 1000 millimeters..

1 meter = 1000 millimeters

Example 3:

Convert 5 meters into millimeters.

Solution:

As we know,

1 meter = 1000 millimeters

So,

5 meter = 5 x 1000 millimeters
= 5000 millimeters

### Kilometer

It is one of the most used units of length after the meter. Almost all big lengths are calculated and represented in this unit. 1 kilometer includes 1 million millimeters.

1 Kilometer = 1000000 millimeters

Note:

Example 4:

Convert 2 kilometers into millimeters.

Solution:

As we know,

1 Kilometer = 1000000 millimeters

So,

2 Kilometer = 2 x 1000000 millimeters
= 2000000 millimeters

### Is there any unit less than a millimeter?

In general Mathematics, no units are used that are less than millimeters. In Physics, smaller units are used including micrometers, nanometers, and others

### FAQ's

Is a millimeter the smallest unit of measurement?

In general Mathematics, it is the smallest unit of measurement. But there are other smaller units of measurement too in advanced Mathematics.

Can we convert inches into millimeters?

Yes, an inch is also a unit of measurement. 1 mm includes 0.0393 inches. So, you can easily interconvert these units.

How many mm are in 1 cm?

There are 10 mm in 1 cm.

What is the size of a table in mm if it is 10 meters long?

The size of the table in mm is 1000 mm if it is 10 meters long.