On this page - Fahrenheit to Celsius:
Fahrenheit To Celsius Formula
Use this formula to convert a temperature in Fahrenheit (K) to Celsius (°F).
If required, there are worked examples below which use this formula to show how to convert a temperature in Fahrenheit to a temperature in Celsius.
As with any math calculation and conversion, it's good practice to double check your results. If you are using this formula for your own conversions, you can check your result with the Fahrenheit to Celsius calculator.
Temperature scales are usually named after the person who created them. The temperature scales used in this formula were created by Daniel Gabriel Fahrenheit (1686 – 1736), and Anders Celsius (1701–1744).
I am unsure if it was Anders Celsius or Daniel Gabriel Fahrenheit who created this conversion formula. Literature indicates that the Fahrenheit scale was invented in 1724 and the Celsius (Centigrade) scale invented in 1742. From these dates, it's probable that Anders Celsius invented this conversion formula.
How To Convert Fahrenheit To Celsius
Using the Fahrenheit to Celsius formula: Celsius (°C) = (Fahrenheit - 32) / 1.8, these examples show how to convert a temperature in Fahrenheit to Celsius.
Worked Example 1
How To Convert 0 Fahrenheit (°F) to Celsius (°C)
| °C = | ( 0 - 32 ) / 1.8 |
| = | -32 / 1.8 |
| = | -17.78 °C |
| ∴ | therefore, 0 Fahrenheit (°F) is equal to -17.78 Celsius (°C) ( to 2 decimal places ) |
check this result with the conversion calculator
Worked Example 2
How To Convert 100 Fahrenheit (°F) to Celsius (°C)
| °C = | ( 100 - 32 ) / 1.8 |
| = | 68 / 1.8 |
| = | 37.78 °C |
| ∴ | therefore, 100 Fahrenheit (°F) is equal to 37.78 Celsius (°C) ( to 2 decimal places ) |
check this result with the conversion calculator
Albert Einstein & his impostor are shown for illustrative purposes.
Anders Celsius (1701–1744), is the proponent of the Celsius temperature scale.
Formula Or Equation?
Is a formula, an equation, or both used to convert Fahrenheit to Celsius?
I regard the formulae* , on the Calculate and Convert section of this website, as being formulae and equations - each formula is in the form of an equation.
* 'formulae', (and formulas), are the plural of formula