About this calculator
°F = °C × 9/5 + 32, and °C = (°F − 32) × 5/9. Kelvin starts at absolute zero: K = °C + 273.15. Water freezes at 0 °C (32 °F) and boils at 100 °C (212 °F) at sea level.
Worked example
25 °C × 9/5 + 32 = 77 °F. Body temperature, 37 °C, is 98.6 °F.
How to use the temperature converter
- Enter the temperature.
- Choose the from.
- Choose the to.
- Read the result — it updates as you type.
Frequently asked questions
What is 25 °C in Fahrenheit?
25 °C is 77 °F.
At what temperature are Celsius and Fahrenheit equal?
At −40: −40 °C is the same as −40 °F.