Temperature Converter
Instantly convert between different temperature scales with our easy-to-use calculator. Perfect for weather comparisons, cooking, scientific calculations, and international travel.
Temperature Converter
Temperature Conversion Formulas
| From | To | Formula |
|---|---|---|
| Celsius (°C) | Fahrenheit (°F) | °F = (°C × 9/5) + 32 |
| Fahrenheit (°F) | Celsius (°C) | °C = (°F - 32) × 5/9 |
| Celsius (°C) | Kelvin (K) | K = °C + 273.15 |
| Kelvin (K) | Celsius (°C) | °C = K - 273.15 |
| Fahrenheit (°F) | Kelvin (K) | K = (°F - 32) × 5/9 + 273.15 |
| Kelvin (K) | Fahrenheit (°F) | °F = (K - 273.15) × 9/5 + 32 |
About Temperature Scales and Measurement
Temperature is a physical quantity that expresses hot and cold. It is the manifestation of thermal energy, present in all matter, which is the source of the occurrence of heat, a flow of energy, when a body is in contact with another that is colder or hotter.
Throughout history, various temperature scales have been developed to measure and communicate temperature values. Today, three main temperature scales are in common use: Celsius, Fahrenheit, and Kelvin.
Common Temperature Scales
Celsius (°C):
The Celsius scale, also known as the centigrade scale, is used by most countries around the world. It was originally defined by Swedish astronomer Anders Celsius in 1742. On the Celsius scale:
- Water freezes at 0°C and boils at 100°C at standard atmospheric pressure
- Normal human body temperature is approximately 37°C
- Room temperature is typically around 20-22°C
Fahrenheit (°F):
The Fahrenheit scale is primarily used in the United States and its territories. It was proposed by German physicist Daniel Gabriel Fahrenheit in 1724. On the Fahrenheit scale:
- Water freezes at 32°F and boils at 212°F at standard atmospheric pressure
- Normal human body temperature is approximately 98.6°F
- Room temperature is typically around 68-72°F
Kelvin (K):
The Kelvin scale is the base unit of temperature in the International System of Units (SI) and is used primarily in scientific contexts. It was proposed by British physicist William Thomson (Lord Kelvin) in 1848. On the Kelvin scale:
- 0 K is absolute zero, the theoretical point at which all thermal motion ceases
- Water freezes at 273.15 K and boils at 373.15 K at standard atmospheric pressure
- There are no negative temperatures on the Kelvin scale
- The Kelvin scale uses the same increment as the Celsius scale (a one-degree change in Celsius equals a one-degree change in Kelvin)
Conversion Accuracy
Our temperature converter uses the most precise conversion formulas to ensure accuracy:
- 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
These conversion formulas are based on the exact relationships between the temperature scales and provide the most accurate temperature conversions possible for all your measurement needs.