Temperature Converter
Convert temperatures between Celsius, Fahrenheit and Kelvin instantly with live conversion as you type.
How to use the Temperature Converter
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Type a temperature in any of the three fields.
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Read the other two values instantly.
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Copy the value you need.
Celsius, Fahrenheit, and Kelvin
Temperature conversion is one of the most common everyday calculations — recipes use Fahrenheit or Celsius, science uses Kelvin, and weather reports vary by country. This converter shows all three scales at once, updating live as you type. The formulas are straightforward (C to F is ×9/5+32, K is C+273.15) but it's faster to just type the number and get answers instantly.
Key features
- Instant three-way Celsius ↔ Fahrenheit ↔ Kelvin conversion
- Live updating as you type
- Clear, large display of each scale
- Works offline once loaded
Frequently asked questions
What's the formula for Fahrenheit to Celsius?
°C = (°F − 32) × 5/9. This converter does the math instantly so you don't have to.
Why does zero Kelvin equal -273.15°C?
Zero Kelvin is absolute zero — the theoretical point where all molecular motion stops, equivalent to -273.15°C or -459.67°F.
Is my input saved?
No. The conversion happens live in your browser and nothing is stored or sent anywhere.