# 90 Miles Per Hour to Kilometers Per Hour Conversion

Converting from miles per hour (mph) to kilometers per hour (kph) is a common task for people in many different fields. Whether you’re a professional driver, a student, or even a hobbyist, you’ll find yourself needing to convert between these two units of speed. Knowing how to quickly and accurately convert mph to kph is an important skill to have.

## Why Convert From MPH to KPH? Converting from mph to kph is necessary because the two units of speed are based on different systems of measurement. The United States and some other countries use the mile as their unit of measure for distance, while the rest of the world uses the kilometer. So, if you’re traveling in or talking about speed in a country that uses kilometers, you’ll need to convert from mph to kph.

## How To Convert From MPH to KPH To convert from mph to kph, you’ll need to use a formula. The formula for converting from miles per hour to kilometers per hour is simple: just multiply the number of miles per hour by 1.61. So, if you want to convert 90 mph to kilometers per hour, you’d simply multiply 90 by 1.61 to get 144.9 kph.

## When Should You Use MPH vs. KPH? When you’re talking about speed, it’s important to know when to use mph and when to use kph. In the United States and some other countries, mph is the standard unit of measure for speed. However, in most parts of the world, the standard unit of measure is kph. So, when you’re talking about speed in one of these countries, you should use kph. On the other hand, if you’re talking about speed in the US or another country that uses mph, you should use mph.

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Converting from mph to kph is an important skill to have because the two units of speed are based on different systems of measure. To convert from mph to kph, you’ll need to use a formula which multiplies the number of miles per hour by 1.61. When talking about speed, it’s important to know when to use mph and when to use kph. In the US and other countries that use the mile as a unit of measure, you should use mph. In most other countries, you should use kph.