Temperature Converter
A temperature converter is a free online tool that converts temperatures between Celsius, Fahrenheit, and Kelvin instantly.
How to use Temperature Converter
- Enter value — Type the temperature you want to convert.
- Pick units — Choose from and to units (C, F, or K).
- See result — The converted value appears instantly.
Key features
- Celsius, Fahrenheit, Kelvin
- Instant conversion
- Negative temperatures
- Mobile-friendly
- Free and unlimited
The Three Temperature Scales
Celsius (°C) is used in most of the world for everyday temperatures. Fahrenheit (°F) is used in the US for weather and cooking. Kelvin (K) is the scientific scale — starts at absolute zero and doesn't use degree symbols. Understanding conversions is essential for travel, cooking, science, and international communication.
Key Temperature References
Water freezes at 0°C / 32°F / 273.15 K. Water boils at 100°C / 212°F / 373.15 K. Room temperature is around 20-22°C / 68-72°F. Human body temperature is 37°C / 98.6°F. Absolute zero is -273.15°C / -459.67°F / 0 K. Knowing these reference points helps you sanity-check conversions.
Cooking Temperature Conversions
US recipes use Fahrenheit (350°F for baking, 400°F for roasting). European recipes use Celsius (180°C, 200°C). Conversion is not a simple ratio — always use a formula. Our tool handles this instantly, so you can convert any recipe from any country.
Why Use a Converter?
Mental math is error-prone for temperature conversions. Travelers need to convert weather forecasts. Cooks need to convert recipes. Scientists need precise conversions. Our tool handles all conversions instantly and accurately — from boiling water to liquid nitrogen.
Pro tips
- Remember 0°C = 32°F and 100°C = 212°F as reference points
- For quick approximation: double Celsius and add 30 to get Fahrenheit
- Kelvin values are never negative — 0 K is the minimum
- Body temperature is 37°C / 98.6°F
Common use cases
- Converting cooking temperatures
- Travel weather conversion
- Science homework and study
- Engineering and manufacturing
- Medical temperature tracking
Frequently asked questions
How do I convert C to F?+
Formula: °F = °C × 9/5 + 32.
How do I convert F to C?+
Formula: °C = (°F - 32) × 5/9.
What is absolute zero?+
-273.15°C = -459.67°F = 0 K. The coldest possible temperature.
Is it free?+
Yes, 100% free.
Can I convert negative temperatures?+
Yes — negative values work correctly.
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