Temperature Converter
Accurately convert between Celsius (°C), Fahrenheit (°F), Kelvin (K), and Rankine (°R).
Conversion Formula & Standards
Conversions follow International System of Units (SI) and ISO standard constants.
How to Use Temperature Converter
Enter a temperature value.
Select your source temperature scale (°C, °F, K, °R).
Instantly see all other temperature scales calculated side-by-side with reference thermal landmarks.
Frequently Asked Questions
At what temperature are Celsius and Fahrenheit equal?
Celsius and Fahrenheit are identical at -40° (-40°C = -40°F).
What is Absolute Zero?
Absolute Zero is the lowest possible theoretical temperature where all molecular motion ceases: 0 Kelvin (-273.15°C or -459.67°F).
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