Temperature Unit Definitions
Our Temperature Converter helps you easily switch between Celsius, Fahrenheit, and Kelvin. Perfect for weather tracking, cooking, science experiments, and international travel, this tool ensures accurate conversions whether you're checking weather forecasts or preparing recipes.
Celsius (°C)
Celsius is the temperature scale used in most of the world. The freezing point of water is 0°C and the boiling point is 100°C at standard atmospheric pressure. It is named after Anders Celsius, a Swedish astronomer.
Fahrenheit (°F)
Fahrenheit is a temperature scale primarily used in the United States. The freezing point of water is 32°F and the boiling point is 212°F at standard atmospheric pressure. It is named after Daniel Gabriel Fahrenheit.
Kelvin (K)
Kelvin is the base unit of temperature in the International System of Units (SI). Zero Kelvin (absolute zero) is the lowest possible temperature. The Kelvin scale uses the same degree increments as Celsius, with 0 K = -273.15°C.
Rankine (°R)
Rankine is an absolute temperature scale based on the Fahrenheit scale. Zero Rankine equals absolute zero. It is primarily used in engineering thermodynamics in the United States. One degree Rankine equals one degree Fahrenheit.
Frequently Asked Questions on Temperature Conversion
Q: How to convert Celsius to Fahrenheit?
Multiply by 9/5 and add 32. Example: 25°C = (25 × 9/5) + 32 = 77°F.
Q: What is absolute zero in Kelvin?
Absolute zero is 0 Kelvin (-273.15°C). It's the lowest possible temperature where molecular motion stops.
Q: How many degrees Celsius is room temperature?
Room temperature is typically 20-25°C (68-77°F). Comfortable indoor temperatures range between these values.
Popular Temperature Conversions
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Our free online temperature converter provides instant, accurate results for Celsius to Fahrenheit, Kelvin to Celsius, and Fahrenheit to Celsius and more. Perfect for weather reports, cooking, science experiments, and global temperature comparisons.