Fahrenheit to Celsius Converter

Created by Purnima Singh, PhD
Reviewed by Kenneth Alambra
Last updated: Sep 22, 2022

Omni's Fahrenheit to Celsius converter allows you to convert the temperature values from Fahrenheit to Celsius temperature scales.

Continue reading to learn more about the different temperature scales, i.e., Fahrenheit and Celsius, and the formula for conversion between the two. You will also see how to convert Fahrenheit to Celsius using our converter.

Fahrenheit and Celsius temperature scales

Both degree Celsius (°C) and degree Fahrenheit (°F) are units of temperature.

On the Celsius temperature scale, the freezing point of water at 1 atm pressure is 0 °C, and the boiling point of water is 100 °C. The difference between these two points is divided into 100 equal parts, each part representing 1 °C.

On the Fahrenheit temperature scale the freezing point of water is 32 °F, and the boiling point is 212 °F. The difference between these two fixed points is further divided into 180 equal parts, each division representing 1 °F.

Formula for conversion from Fahrenheit to Celsius

Using the information mentioned in the previous section, we will write the formula to convert between Fahrenheit and Celsius temperature scales as:

Tc0100=TF32180Tc5=TF329\small \begin{align*} \frac{T_c - 0}{100} &= \frac{T_F - 32}{180} \\ \\ \frac{T_c}{5} &= \frac{T_F - 32}{9} \\ \end{align*}

where:

  • TcT_c - Temperature on Celsius scale; and
  • TFT_F - Temperature on Fahrenheit scale.

For example, using the formula for conversion from Fahrenheit to Celsius, we can show that 212 °F is equivalent to 100 °C:

Tc=212329×5=1809×5=100°C\small \begin{align*} T_c&= \frac{212 - 32}{9} \times 5 \\ & = \frac{180}{9} \times 5 \\ & = 100 \degree \text{C} \end{align*}

How to convert Fahrenheit to Celsius

Now let us see how we can convert Fahrenheit to Celsius using our converter:

  1. Enter the temperature value on the Fahrenheit scale.

  2. The converter will display the temperature on the Celsius scale.

  3. You can also use this tool to convert from Celsius to Fahrenheit.

Other temperature scale converters

FAQ

How do I convert Fahrenheit to Celsius?

To convert from Fahrenheit to Celsius temperature scale, follow the given instructions:

  1. Subtract 32 from the temperature value on the Fahrenheit scale.

  2. Divide the result by 9 and multiply by 5.

  3. Congrats! You have converted from Fahrenheit to Celsius temperature scale.

Is there a point where Celsius and Fahrenheit are equal?

Yes, at -40, both Celsius and Fahrenheit are equal, as shown below:

  1. Use the formula for conversion from Celsius and Fahrenheit, i.e., T(°C) = (T(°F) - 32)/9 × 5.

  2. Substitute x in the above equation for both temperature scales, x(°C) = (x (°F) - 32)/9 × 5.

  3. Solve for x, and you will get x = -40.

  4. Hence both Celsius and Fahrenheit are equal at -40 °C and -40 °F.

Purnima Singh, PhD
💡 You can also convert from Celsius to Fahrenheit!
°F
°C
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