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Temperature Converter

Convert between Celsius, Fahrenheit, and Kelvin using exact formulas

About the Temperature Converter

The Temperature Converter provides precise conversions between Celsius, Fahrenheit, and Kelvin using standard thermodynamic formulas. Unlike simple unit multipliers, temperature scales have different zero points and interval sizes, requiring linear transformation equations. This tool handles all three scales correctly for any numeric input, including negative values.

Temperature conversion is essential in cooking, science, weather reporting, and industrial process control. Understanding the relationship between these scales helps in interpreting data across different measurement systems used worldwide.

How to Use This Calculator

  1. Enter the temperature value in the "From" input field.
  2. Select the current temperature scale from "From Unit".
  3. Select the target scale from "To Unit".
  4. Click "Convert" to see the result and the exact formula applied.

FAQs

What are the formulas for temperature conversion?

Celsius to Fahrenheit: F = C × 9/5 + 32. Fahrenheit to Celsius: C = (F − 32) × 5/9. Celsius to Kelvin: K = C + 273.15. Kelvin to Celsius: C = K − 273.15. Fahrenheit to Kelvin: K = (F − 32) × 5/9 + 273.15.

Why does Kelvin not use the degree symbol?

Kelvin is an absolute thermodynamic temperature scale where zero represents absolute zero, the theoretical point at which molecular motion stops. It is a unit of measure, not a degree scale, so values are written as "K" without the degree symbol. Water freezes at 273.15 K and boils at 373.15 K.