Unit Converters
Celsius to Fahrenheit Converter
Convert temperatures from Celsius to Fahrenheit, or switch direction to convert Fahrenheit to Celsius. Negative temperatures work too.
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Celsius → Fahrenheit
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Result
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How to Use the Celsius to Fahrenheit Converter
- Choose “Celsius → Fahrenheit” or “Fahrenheit → Celsius” from the dropdown.
- Enter the temperature. Use a minus sign for temperatures below zero.
- Read the converted temperature in the result panel.
Examples
Celsius → Fahrenheit
- Input
- 25 °C
- Output
- 77 °F
Fahrenheit → Celsius
- Input
- 98.6 °F
- Output
- 37 °C
About the Celsius to Fahrenheit Converter
Celsius is used for weather and cooking in most countries, while Fahrenheit is common in the US. Converting is useful for oven temperatures in recipes, weather forecasts abroad and body temperature readings.
Celsius to Fahrenheit uses °F = °C × 9/5 + 32, and Fahrenheit to Celsius uses °C = (°F − 32) × 5/9. Results are rounded to six decimal places.
Frequently Asked Questions
What is the formula for Celsius to Fahrenheit?
Multiply by 9/5 (or 1.8) and add 32. For example, 25 °C × 1.8 + 32 = 77 °F.
What is the formula for Fahrenheit to Celsius?
Subtract 32 and multiply by 5/9. For example, (98.6 − 32) × 5/9 = 37 °C.
At what temperature are Celsius and Fahrenheit equal?
At −40. −40 °C is exactly −40 °F.
Can I convert negative temperatures?
Yes. Enter a minus sign before the number, for example −10 °C is 14 °F.