Temperature Converter
Convert Celsius, Fahrenheit, and Kelvin
Conversion Formula
C → F: (C × 9/5) + 32 | F → C: (F − 32) × 5/9 | C → K: C + 273.15
Temperature conversions require nonlinear equations rather than simple ratios:
Celsius to Fahrenheit: (°C × 9/5) + 32 = °F
Fahrenheit to Celsius: (°F − 32) × 5/9 = °C
Celsius to Kelvin: °C + 273.15 = K
Kelvin to Celsius: K − 273.15 = °C
Fahrenheit to Kelvin: (°F − 32) × 5/9 + 273.15 = K
Temperature conversion is unique because it does not use simple ratios — the scales have different zero points. Water freezes at 0°C (32°F, 273.15 K) and boils at 100°C (212°F, 373.15 K).
Our converter handles all linear and nonlinear temperature conversions between Celsius, Fahrenheit, and Kelvin instantly.
All Supported Temperature Units
| Unit | Symbol | Definition |
|---|---|---|
| Celsius | °C | The metric temperature scale where water freezes at 0° and boils at 100°. |
| Fahrenheit | °F | The imperial temperature scale where water freezes at 32° and boils at 212°. |
| Kelvin | K | The SI base unit of thermodynamic temperature, starting at absolute zero. |
| Rankine | °R | The absolute Fahrenheit scale used in some engineering fields. |
Temperature Reference Points
| Reference | Conversion |
|---|---|
| Absolute Zero | −273.15°C |
| −459.67°F | 0 K |
| Water Freezes | 0°C / 32°F / 273.15 K |
| Room Temp | ~21°C / ~70°F / ~294 K |
| Body Temp | 37°C / 98.6°F / 310.15 K |
| Water Boils | 100°C / 212°F / 373.15 K |
Frequently Asked Questions
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Supported Temperature Units
Complete listing of available temperature units in our converter.