Celsius to fahrenheit converter
Convertersconversion pair
Convert celsius to fahrenheit instantly: °C × 1.8 + 32. The exact formula, a copy button, and every other temperature still on screen.
20 °C is the only celsius number Americans ever agree on.
work surface
Math, not advice — results are indicative. Read the disclaimer.
pro tips
Quick mental math: double the celsius and add 30. Close enough for weather, not close enough for ovens.
−40 °C is −40 °F — the only temperature where both scales agree, and they're both right to stay inside.
100 °C is 212 °F: water boiling in both languages.
what it does
The celsius-to-fahrenheit trick is one line: multiply by 1.8 and add 32. That's it. Every weather app, oven and fever you've ever argued about is just that formula wearing different numbers.
It shows up everywhere an American thermometer meets a celsius number: a forecast from somewhere European (22 °C, which is "jacket weather" in one country and "air conditioning" in the other), an oven that says 180 and a recipe that says 350, or a body temperature read in celsius while the worry happens in fahrenheit. The conversion is the interpreter in the middle, and it never gets tired.
The scales only agree once: at −40. Below that, both thermometers have given up and are just showing off. Above it, 0 °C is freezing, 20 is pleasant, 30 is a heatwave and 100 is water being dramatic about it.
Type any celsius number and the widget answers in fahrenheit instantly, with the math written on screen. Click the result to copy it, and use the swap button when the argument goes the other way — someone always needs the fahrenheit-to-celsius version eventually.
quick answers
How do I convert celsius to fahrenheit?
Multiply the celsius by 1.8 and add 32. 20 °C becomes 68 °F, 100 °C becomes 212 °F, and your math teacher finally gets a use case.
Is 20 °C warm?
In fahrenheit it's 68 °F — room temperature in most buildings, light jacket weather in most of Europe, and shorts weather in the UK.
Why do Americans still use fahrenheit?
Habit, mostly. The US adopted it early, kept it through the metric transition, and now 72 °F feels like home in a way 22.2 °C never will.
What is 100 °C in fahrenheit?
212 °F — the boiling point of water at sea level. The one number every celsius user knows in fahrenheit, because ovens are bilingual.