Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin.
Formula
(°C × 9/5) + 32 = °F
What is a Temperature Converter?
A Temperature Converter translates thermal measurements between different scales: Celsius, Fahrenheit, and Kelvin. Unlike linear units (where 1 meter always equals 3.28 feet regardless of value), temperature scales have different zero points and scale factors, requiring specific formulas for each conversion.
Celsius (°C) is the metric standard. 0°C is the freezing point of water, 100°C is boiling. It's used everywhere except the US. Fahrenheit (°F) is used primarily in the United States. Water freezes at 32°F and boils at 212°F. Kelvin (K) is the absolute temperature scale used by scientists. 0 K is 'Absolute Zero'—the point where atoms theoretically stop moving. There are no negative Kelvin values.
The offset problem: Converting 10°C to Fahrenheit doesn't just multiply by a factor. You first multiply by 9/5 (scale difference) and THEN add 32 (offset adjustment). This is why temperature conversions are trickier than length or weight. Our tool handles all six possible conversions (3 scales × 2 directions = 6 formulas) automatically.
This tool is essential for travelers (weather forecasts), chefs (recipes from different countries), and scientists (lab work, astronomical temperatures). It also shows the exact formula being used for educational purposes.
1How to Use
- Input Temperature: Type the numeric value you want to convert (e.g., 100).
- Select Source Scale: Choose Celsius, Fahrenheit, or Kelvin from the dropdown.
- Select Target Scale: Pick the scale you want to convert to.
- Read Result: The converted value appears instantly.
- Check Formula: Below the converter, see the exact mathematical formula used.
- Swap: Use the swap button to reverse the conversion direction.
★Key Features
- Three Scale Support: Celsius for international use, Fahrenheit for US recipes, Kelvin for science.
- Formula Display: See the exact math (`(°C × 9/5) + 32 = °F`) for learning.
- Handles Offsets: Correctly applies the different zero points and scale multipliers.
- Negative Support: Works with temperatures below zero (e.g., -40°C = -40°F).
- Scientific Precision: Properly calculates Kelvin, which has no negative values.