Many people get confused when they see the temperatures written in Celsius (°C) and Fahrenheit (°F) scales. The common question that arises is, “Which temperature is colder, -40°C or -40°F?” The surprising truth is that both temperatures are the same!
The Unique Point Where They Match
In normal circumstances, it is expected that Celsius and Fahrenheit readings will be different from each other even when they represent the same temperature. For instance:
- 0°C = 32°F
- 25°C = 77°F
- 100°C = 212°F
However, there is a unique point where these two scales will be exactly the same. This unique point is -40 degrees.
👉 -40°C = -40°F
In other words, if it is -40°C outside, it is automatically -40°F at exactly the same time. Neither is colder than the other since they represent exactly the same temperature.
Why Does This Happen?
The scales of Celsius and Fahrenheit are different because:
- The Celsius scale is based on the freezing and boiling points of water.
- The Fahrenheit scale uses a different reference system.
Because of the difference in the size of the degree intervals in the two scales, the values rarely coincide. However, the values in the two scales coincide when the temperature drops to -40.
How Cold is −40°?
The temperature of −40° is very cold and is normally experienced in cold places such as:
- Northern Canada
- Alaska
- Siberia
- Parts of Antarctica
At this temperature:
- The skin will freeze quickly
- The cold air will feel painful when breathed
- The vehicles will also stop functioning
Simple Conclusion
In order to answer the question properly:
- −40°C is not colder than −40°F.
- −40°F is not colder than −40°C.
- They are the exact same temperature.
It is a rare and interesting occurrence when the Celsius and Fahrenheit scales will equal each other.