Temperature Converter
Convert between Celsius, Fahrenheit and Kelvin instantly. Enter one temperature and see all three.
- Fahrenheit (°F)
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- Kelvin (K)
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What is the Temperature Converter?
This temperature converter turns a reading in Celsius, Fahrenheit or Kelvin into the other two scales. Water boils at 100 degrees Celsius, which is 212 degrees Fahrenheit and 373.15 Kelvin. Choose the scale you are starting from, enter the number and read all three results.
How it works
The reading is first converted to Celsius. Fahrenheit becomes Celsius by subtracting 32 and multiplying by 5 over 9, and Kelvin becomes Celsius by subtracting 273.15. Celsius becomes Fahrenheit by multiplying by 9 over 5 and adding 32, and Kelvin by adding 273.15.
How to use it
- Type the temperature.
- Choose Celsius, Fahrenheit or Kelvin as the starting scale.
- Read the temperature in all three scales.
- Change the number or scale to convert again.
Temperature Converter — FAQ
What is body temperature in Celsius?
A common reference is 98.6 degrees Fahrenheit, which is 37 degrees Celsius. Enter it with Fahrenheit selected to confirm.
What is absolute zero?
Absolute zero is 0 Kelvin, which equals minus 273.15 degrees Celsius and minus 459.67 degrees Fahrenheit.
Why does Kelvin not use a degree sign?
Kelvin is an absolute scale starting at zero, so it is written as K without a degree symbol.