Celsius to Fahrenheit Converter

Convert a temperature between °C, °F, and K.

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Frequently asked questions

How do you convert Celsius to Fahrenheit?
°F = (°C × 9/5) + 32. Example: 25°C → 77°F.
How do you convert Fahrenheit to Celsius?
°C = (°F − 32) × 5/9. Example: 68°F → 20°C.
What is the Kelvin relationship?
K = °C + 273.15. Absolute zero is 0 K (−273.15°C).
Which scale does science prefer?
Kelvin for absolute temperature; Celsius for everyday lab notes; Fahrenheit is still common in the US.