Temperature Converter
Convert between Celsius and Fahrenheit instantly. Type a value in either box and the other updates in real time.
Result
°F = °C × 9/5 + 32
Uses the offset formula — temperature is not a simple ratio.
How to use this converter
- 1
Enter a value in the Celsius box — for example 0 °C.
- 2
Read the Fahrenheit result, or type in the Fahrenheit box to convert the other way.
- 3
Use Swap units to flip the direction, or clear a box to start over.
Understanding Celsius and Fahrenheit
Celsius (°C) and Fahrenheit (°F) are both temperature scales, but they use different zero points. Water freezes at 0 °C (32 °F) and boils at 100 °C (212 °F). Because the scales are offset, converting is not a simple multiplication — you use the formula °F = °C × 9/5 + 32. For other unit conversions, try the weight converter or the length converter.
Common conversions
| Celsius (°C) | Fahrenheit (°F) |
|---|---|
| 0 °C | 32 °F |
| 20 °C | 68 °F |
| 37 °C | 98.6 °F |
| 100 °C | 212 °F |
| -40 °C | -40 °F |
Frequently asked questions
What is the formula for Celsius to Fahrenheit?
Multiply the Celsius value by 9/5, then add 32. The formula is °F = °C × 9/5 + 32.
At what temperature are Celsius and Fahrenheit equal?
Celsius and Fahrenheit have the same numerical value at -40 degrees.
What is normal body temperature in Fahrenheit?
The commonly cited average is 98.6 °F, which equals 37 °C, although normal body temperature varies by person and measurement method.
Why can’t temperature be converted with a simple factor?
Celsius and Fahrenheit have different zero points as well as different degree sizes, so the conversion requires both multiplication and an offset.
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Disclaimer
CalcPilot's conversions are mathematically precise estimates for everyday and planning use. Always verify critical measurements with an official source before relying on them. Review our calculation methodology and full disclaimer.