## FAQ: At what temperature are Celsius and Fahrenheit the same?

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At what temperature are Celsius and Fahrenheit the same?

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The formulas for converting between degree Celsius and degree Fahrenheit
are:

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

To find the temperature when both are equal, we use an old algebra trick
and just set ºF = ºC and solve one of the equations.

°C = (°C * 9/5) + 32
°C - (°C * 9/5) = 32
-4/5 * °C = 32
°C = -32 * 5/4
°C = -40

°F = (°F * 9/5) + 32
°F - (°F * 9/5) = 32
-4/5 * °F = 32
°F = -32 * 5/4
°F = -40

So the temperature when both the Celsius and Fahrenheit scales are the same
is -40 degrees.

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Source: www.onlineconversion.com/faq_11.htm

## What Temperature Does Fahrenheit Equal Celsius?

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** What Temperature Does Fahrenheit Equal Celsius? **

Temperature at Which Fahrenheit and Celsius Are the Same

This thermometer displays the Fahrenheit and Celsius temperature scales.
The temperatures are the same at -40 degrees. - Andrew Johnson / Getty
Images
This thermometer displays the Fahrenheit and Celsius temperature scales.
The temperatures are the same at -40 degrees.  Andrew Johnson / Getty
Images
By Anne Marie Helmenstine, Ph.D.
Chemistry Expert

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By Anne Marie Helmenstine, Ph.D.

Updated April 08, 2016.

-*Question: *What Temperature Does Fahrenheit Equal Celsius?-

There is one point on the Fahrenheit and Celsius scales where the
temperatures in degrees are equal. This is -40 Â°C and -40 Â°F. If you
can't remember the number, there is a simple algebraic method to find the