Temperature Converter
Convert instantly between Celsius, Fahrenheit, and Kelvin. See the formula behind every conversion. Free, private, works offline.
▲ Type in any field — the other two update instantly
Kelvin: 25°C = 25 + 273.15 = 298.15K
Reference Temperatures
About Temperature Converter
Quickly convert temperatures between Celsius, Fahrenheit, and Kelvin. Type any value and see the results update in real time, with the conversion formula clearly displayed. No server calls — everything runs in your browser.
Three Units
Celsius (°C), Fahrenheit (°F), and Kelvin (K). The three most common temperature scales, all in one tool.
Real-Time Conversion
Type in any field and the other two update instantly. No buttons to press, no page reload — just immediate results.
Formula Display
Every conversion shows the exact formula used. Learn how the math works: multiplication, division, and offset applied step by step.
Reference Values
Common temperature benchmarks included: boiling point, freezing point, absolute zero, body temperature, and room temperature for quick reference.
How It Works
- Enter a temperature — Type a number in any of the three input fields (Celsius, Fahrenheit, or Kelvin).
- Auto-conversion — The other two fields update instantly. The conversion formulas use standard scientific equations.
- Read the formula — Below the inputs, the exact conversion formula is displayed step by step so you can follow the math.
- Use reference values — Scroll down to see common temperature benchmarks for quick comparison and verification.