Converters

Temperature Converter

Convert temperatures between Celsius, Fahrenheit and Kelvin with precise equations. Example: what is 25°C in Fahrenheit?

Example: the temperature is 25°C. What is that in Fahrenheit?

Temperature

From To

Result 77 فهرنهايت 25 °C = 77 °F

✓ Conversion equations verified against international standards

How is the conversion calculated?

The tool uses exact conversion equations between Celsius, Fahrenheit and Kelvin, and prevents values below absolute zero.

This calculation runs in your browser. Your values are not sent to our server.

How it works

Enter the temperature, then choose the current scale and the scale you want to convert to.
Example: 25 degrees Celsius equals 77 degrees Fahrenheit.
Use the swap button to reverse the scales without typing the value again.
The tool uses the exact conversion equations between Celsius, Fahrenheit and Kelvin rather than a single multiplication factor.
Negative Celsius and Fahrenheit values are supported, but values below absolute zero are rejected.

What is 25°C in Fahrenheit?

25°C equals 77°F.

What is 32°F in Celsius?

32°F equals 0°C.

At what temperature are Celsius and Fahrenheit equal?

They are equal at −40: −40°C = −40°F.

What is 0°C in Kelvin?

0°C equals exactly 273.15 K.

Can I enter temperatures below zero?

Yes for Celsius and Fahrenheit, as long as the value is not below absolute zero: −273.15°C, −459.67°F or 0 K.