Celsius to Fahrenheit Converter
Convert between Celsius and Fahrenheit instantly with a slider
Convert temperatures between Celsius (°C) and Fahrenheit (°F) in both directions, instantly. Type a number or drag the slider and the other unit updates in real time, along with a comfort rating that runs from freezing to very hot. Everything is calculated in your browser, so no data is ever sent to a server. Handy for checking the weather abroad, converting recipe temperatures, or knocking out science homework.
도구를 불러오는 중…
🔒 Everything runs 100% in your browser. Your files and input are never uploaded to any server.
How to use
- Type a number into the Celsius (°C) field or drag the slider.
- The Fahrenheit (°F) value is calculated automatically and updates in real time.
- It works the other way too — adjust the Fahrenheit field or slider and the Celsius value converts automatically.
- Check the comfort badge shown alongside the converted temperature (cold, comfortable, hot, and so on).
FAQ
- What formula does it use?
- It uses °F = °C × 9/5 + 32, and rounds the result to two decimal places.
- Are the temperatures I enter stored on a server?
- No. Every conversion happens instantly inside your browser, and no data leaves your device.
- How are the comfort ratings defined?
- Below 0°C is very cold, 0–10°C is cold, 10–18°C is cool, 18–26°C is comfortable, 26–32°C is warm, and 32°C and above is very hot.