Temperature Converter
Type a temperature and see it in Celsius, Fahrenheit, Kelvin and Rankine at the same time. Because these scales have different zero points, the converter uses the proper formulas rather than a simple multiplier.
How to use the Temperature Converter
- Enter a temperature value (negative numbers are allowed).
- Choose the scale you are converting from.
- Choose the target scale.
- Read the result and the values in all four scales.
Features
- Celsius, Fahrenheit, Kelvin and Rankine
- Correct handling of offset scales
- Supports negative and decimal temperatures
- All four scales shown together
Benefits
- Follow recipes and weather reports from other countries
- Convert lab and engineering temperatures to kelvin
- No need to remember the 9/5 + 32 formula
Frequently asked questions
What is the formula for Celsius to Fahrenheit?
°F = °C × 9/5 + 32. For example, 25 °C is 77 °F.
At what temperature are Celsius and Fahrenheit equal?
At −40 degrees. −40 °C is exactly −40 °F.
What is the Rankine scale?
Rankine is an absolute scale with Fahrenheit-sized degrees. 0 °R is absolute zero and 491.67 °R is the freezing point of water.
Can I enter a temperature below absolute zero?
The tool will still calculate it, but values below 0 K (−273.15 °C) are not physically possible.
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