How it works
Convert a temperature between degrees Celsius and degrees Fahrenheit.
Enter a temperature and choose the direction. The calculator applies the exact conversion formula for the chosen direction.
Formula
°F = °C × 9/5 + 32; °C = (°F − 32) × 5/9.
C- Temperature in Celsius (°C)
F- Temperature in Fahrenheit (°F)
Examples
- 100 °C to FahrenheitTemperature 100 · Celsius → Fahrenheit212 °F
Frequently asked questions
At what temperature are they equal?
−40 °C equals −40 °F — the only point where the two scales coincide.
Is the conversion exact?
Yes. The relationship is a fixed affine formula with no rounding error beyond display precision.
How to read the result
Both scales measure the same physical temperature on different grids.
Limitations
Temperature only; it does not handle Kelvin or absolute-zero physics.
Source: Standard Celsius–Fahrenheit affine conversion.