How do I convert Celsius to Fahrenheit?

°F = °C × 9/5 + 32. Example: 25 °C = 77 °F.

How do I convert Fahrenheit to Celsius?

°C = (°F − 32) × 5/9. Example: 100 °F ≈ 37.78 °C.

At −40°. It's the only point where the two scales give the same number.

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Celsius, Fahrenheit, Kelvin, Rankine — all in one shot.

25 °C equals

77 °F

Convert temperatures between every common scale. Includes Kelvin and Rankine for science and engineering.

How do I convert Celsius to Fahrenheit?: °F = °C × 9/5 + 32. Example: 25 °C = 77 °F.
How do I convert Fahrenheit to Celsius?: °C = (°F − 32) × 5/9. Example: 100 °F ≈ 37.78 °C.
At what temperature are Celsius and Fahrenheit equal?: At −40°. It's the only point where the two scales give the same number.