Temperature Converter
Convert between Celsius, Fahrenheit, Kelvin, Rankine, Delisle, and more — instantly.
Results
Conversion Formula
Quick Reference Chart
Common temperatures for everyday context.
| Reference Point | °C | °F | K |
|---|---|---|---|
| Absolute Zero | −273.15 | −459.67 | 0 |
| Water Freezes | 0 | 32 | 273.15 |
| Room Temperature | 20–22 | 68–72 | 293–295 |
| Human Body | 37 | 98.6 | 310.15 |
| Water Boils | 100 | 212 | 373.15 |
| Hot Desert Day | 50 | 122 | 323.15 |
| Steel Melts | 1370 | 2498 | 1643.15 |
The Science Behind Temperature Scales
Temperature scales were developed independently across history — each rooted in a different measurement philosophy. Today, Celsius dominates science and most of the world, while Fahrenheit remains entrenched in the United States, and Kelvin is the gold standard for physics and engineering.
Understanding how to convert between them is essential for cooking, weather, chemistry, manufacturing, and international communication. Our converter handles all conversions instantly — giving you the formula too, not just the result.
Celsius (°C)
Created by Anders Celsius in 1742, it sets 0°C as the freezing point and 100°C as the boiling point of water at sea level. It is the most widely used scale globally and is the basis for the Kelvin scale.
Fahrenheit (°F)
Proposed by Daniel Gabriel Fahrenheit in 1724. Water freezes at 32°F and boils at 212°F — a 180° span. The scale is still standard in the USA for everyday weather and cooking.
Kelvin (K)
The SI unit of thermodynamic temperature. 0 K is absolute zero — the coldest possible temperature where all molecular motion stops. It uses the same degree size as Celsius: 0°C = 273.15 K.
Rankine, Delisle & More
Rankine is the Fahrenheit equivalent of Kelvin — an absolute scale. Delisle runs downward from water's boiling point. Newton and Réaumur are historical curiosities still used in niche scientific contexts.
When Do You Actually Need This?
Temperature conversion comes up more than you think: adjusting recipes from American cookbooks (°F) to your oven (°C), reading international weather forecasts, understanding oven settings, studying thermodynamics, or configuring hardware sensors. With 8 supported scales, this converter handles them all.
Frequently Asked Questions
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