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Celsius to Fahrenheit converter

Celsius to Fahrenheit converter by Utilorca (utilorca.com): free, no sign-up, runs in your browser. Type a temperature in Celsius and get Fahrenheit as you type, with the formula used. Press the swap button for Fahrenheit to Celsius, or pick Kelvin in the lists.

In other units

Conversion table

−40 °C−40 °F−20 °C−4 °F−10 °C14 °F0 °C32 °F5 °C41 °F10 °C50 °F15 °C59 °F20 °C68 °F25 °C77 °F30 °C86 °F35 °C95 °F37 °C98.6 °F38 °C100.4 °F40 °C104 °F100 °C212 °F150 °C302 °F180 °C356 °F200 °C392 °F220 °C428 °F250 °C482 °F

Common questions and fixes

See all questions and answers

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How to use it

  1. Type the temperature in °C (negative numbers work too).
  2. Read the result in °F and the formula right below it.
  3. Use the swap button for °F to °C, or check the chart for common temperatures.

Questions and answers

What is the formula for Celsius to Fahrenheit?

Multiply by 9/5 (or 1.8) and add 32: °F = °C × 9/5 + 32. For example, 25 °C × 1.8 + 32 = 77 °F. The other way: °C = (°F − 32) × 5/9.

Is there a quick way to estimate it?

Double the Celsius and add 30. It gives 80 for 25 °C (the real answer is 77 °F), close enough for weather but not for cooking or medicine.

At what temperature are Celsius and Fahrenheit the same?

At −40. Minus 40 °C is exactly minus 40 °F; it is the only point where the two scales meet.

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