Unit Conversion
Popular
Temperature Converter
Convert between Celsius, Fahrenheit, Kelvin, and Rankine.
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°C Celsius
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°F Fahrenheit
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K Kelvin
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°R Rankine
Quick Reference
Frequently Asked Questions
Use: Fahrenheit = (Celsius times 9 divided by 5) plus 32. Example: 100 degrees C = (100 times 1.8) + 32 = 212 degrees F. Quick mental approximation: double the Celsius value and add 30. So 25 degrees C is approximately 50 + 30 = 80 degrees F.
Absolute zero is the lowest possible temperature where all molecular thermal motion stops. It equals 0 Kelvin, which is minus 273.15 degrees Celsius and minus 459.67 degrees Fahrenheit. Nothing in the universe can get colder than absolute zero.
Normal human body temperature is approximately 37 degrees Celsius (98.6 degrees Fahrenheit). A fever is generally defined as body temperature above 38 degrees Celsius (100.4 degrees Fahrenheit). Hypothermia occurs below 35 degrees Celsius (95 degrees Fahrenheit).