Converting Celsius to Fahrenheit and Back

Converting Celsius to Fahrenheit and Back
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  • 0:00 Celsius to Fahrenheit
  • 1:15 Example 1
  • 1:45 Fahrenheit to Celsius
  • 2:14 Example 2
  • 3:00 Lesson Summary
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Lesson Transcript
Instructor: Yuanxin (Amy) Yang Alcocer

Amy has a master's degree in secondary education and has taught math at a public charter high school.

Watch this video lesson to learn how you can switch between Fahrenheit and Celsius measurements of temperature. This will help when you visit the doctor and when you travel to different countries.

Celsius to Fahrenheit

In this lesson, we talk about converting between Fahrenheit and Celsius. These are two different temperature measurements. In the United States, the common temperature measurement is Fahrenheit. Fahrenheit is abbreviated with a capital F. Celsius is the most common around the world. Its abbreviation is a capital C. Both are commonly used in scientific literature and at the doctor's.

Most people are either familiar with Fahrenheit or Celsius. So, if you are familiar with one and not the other, it is useful to be able to convert between the two so that you will know what kind of temperature is being talked about. For example, 72 degrees Fahrenheit is a comfortable indoor temperature. In Celsius, a comfortable indoor temperature is 22.2 degrees. See the difference? If you are comfortable with Fahrenheit, looking at a temperature of 22.2 degrees Celsius will probably leave you a little confused. So, let's get going with our conversions.

First, let's do the Celsius to Fahrenheit conversion. The formula used to convert Celsius to Fahrenheit is this one:

F = (C * 9 / 5) + 32

The formula is telling you to multiply your Celsius temperature by 9, and then divide by 5. Then you add 32 to find the Fahrenheit temperature.

Example 1

Let's see how this works out with this problem.

Convert 32 degrees Celsius to Fahrenheit.

Plugging in 32 for C into the equation F = (C * 9 / 5) + 32 and evaluating, you get this:

F = (32 * 9 / 5) + 32
F = 57.6 + 32
F = 89.6

Your answer is 89.6 degrees Fahrenheit. So, 32 degrees Celsius is the same as 89.6 degrees Fahrenheit.

Fahrenheit to Celsius

Now let's look at converting from Fahrenheit to Celsius. The formula for this conversion is this one:

C = (F - 32) * (5 / 9)

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