# Converting 200MM to Inches – How to Make the Conversion Quickly and Easily

How many inches are in 200 millimeters? This question may seem simple, but actually answering it involves more than just knowing the name of each unit and converting one to the other. If you want to make quick work of the process, read on. Here’s how to convert **200mm to inches** quickly and easily!

## How to quickly convert 200mm into inches

To convert from **200mm to inches**, do the following: • Write 200mm at the top of your page. • Write 0.4 under it. • Subtract 0.4in from 200mm, which leaves 80mm. • Draw a line down after you write 80mm. • Write inches under the line. You just made it in three easy steps!

## How to convert from mm to inches when you don’t have a calculator

To convert from **200mm to inches**, do a simple math problem: take your number of mm’s, move the decimal two places over, then multiply that by 39.37. If you need an easy way to do this in your head, move the decimal two spaces over and round up or down as necessary. For example: if you have 200mm, your conversion will be 40 (2 x 40). If you have 230mm it would be 90 (2 x 45). Take care when doing this calculation as it can be tricky when your answer has four digits with only one place for rounding errors.

## The most common conversions

There are a lot of instances when we need to convert from inches or feet into metric or metric into inches, so it can be helpful to know some of the most common conversions. Here are just a few:

– There are 2.54 centimeters in an inch.

– There are 3.5 feet in one meter.

## Common Conversions – Metric vs. Standard

The Metric system is used for measuring lengths. The unit of length in this system is the meter (also called meter). Converting from meters to inches is easy, just remember that there are 2.54 centimeters in an inch, so divide by 2.54! Convert **200mm to inches** with this quick and easy formula:

2.54 cm = 1 inch

200 mm = 200 mm / 2.54 = 66.7 cm = 167 inches

## Common Conversions – Tons vs. Pounds vs. Stones

Ton is a measure of weight, pounds are a measure of mass (in other words, what an object would weigh if you weighed it on Earth), and stones are a measure of volume. Converting from **200mm to inches** may seem difficult at first, but it’s actually quite simple with these few steps:

Multiply your decimal by 16. This means that when converted, 2.5 millimeters become 38 inches (2.5 x 16 =38). The same math would apply for 100 millimeters as 10 inches, for example (100 x 16 = 1600/2).