Convert between Celsius (°C), Fahrenheit (°F), and Kelvin (K) with our precision temperature conversion tool. Perfect for scientific calculations, cooking, weather analysis, and international travel. Our converter uses standard formulas for accurate results every time.
The concept of temperature measurement dates back to 170 AD when Galen proposed a standard "neutral" temperature made from equal parts boiling water and ice. Modern temperature scales were developed in the 18th and 19th centuries by scientists like Anders Celsius, Daniel Fahrenheit, and Lord Kelvin.
| Celsius (°C) | Fahrenheit (°F) | Kelvin (K) | Description |
|---|---|---|---|
| -273.15°C | -459.67°F | 0 K | Absolute Zero |
| 0°C | 32°F | 273.15 K | Water Freezing Point |
| 20°C | 68°F | 293.15 K | Room Temperature |
| 37°C | 98.6°F | 310.15 K | Human Body Temperature |
| 100°C | 212°F | 373.15 K | Water Boiling Point |
Developed by Swedish astronomer Anders Celsius in 1742, the Celsius scale sets the freezing point of water at 0°C and boiling point at 100°C at standard atmospheric pressure. It's the most widely used temperature scale worldwide, adopted by the International System of Units (SI).
Common Uses: Scientific research, weather reporting (except in the USA), cooking in most countries.
Created by German physicist Daniel Gabriel Fahrenheit in 1724, this scale originally set 0°F as the freezing point of brine and 96°F as human body temperature. Today, water freezes at 32°F and boils at 212°F. It's primarily used in the United States and its territories.
Common Uses: Weather reporting in the USA, oven temperatures in American recipes, medical thermometers in some regions.
Named after British physicist William Thomson (Lord Kelvin), this absolute temperature scale starts at absolute zero (0 K), where all molecular motion ceases. Kelvin is the SI base unit for temperature and doesn't use degrees (just K). Water freezes at 273.15 K and boils at 373.15 K.
Common Uses: Scientific research, physics, astronomy, engineering calculations.
Our temperature converter uses the following standard formulas:
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
Kelvin to Fahrenheit: °F = (K - 273.15) × 9/5 + 32