Celsius Converter
Convert Celsius to all major temperature scales including Fahrenheit, Kelvin, and more
Temperature Converter
The most common temperature scale, based on water freezing at 0°C and boiling at 100°C
Commonly used in the United States, based on water freezing at 32°F and boiling at 212°F
The SI base unit of temperature, absolute temperature scale starting from absolute zero
Absolute temperature scale using Fahrenheit degrees, used in engineering
Historical temperature scale where water boils at 0°De and freezes at 150°De
Temperature scale devised by Isaac Newton, with water freezing at 0°N
Historical scale with water freezing at 0°Ré and boiling at 80°Ré
Temperature scale by Ole Rømer, with water freezing at 7.5°Rø
Temperature Conversion Results
Conversion Formulas from Celsius:
Fahrenheit: °F = (9/5 × °C) + 32
Kelvin: K = °C + 273.15
Rankine: °R = (9/5 × °C) + 491.67
Example Conversions
Water Freezing Point
0°C = 32°F = 273.15 K = 491.67°R
The temperature at which pure water freezes at standard atmospheric pressure
Water Boiling Point
100°C = 212°F = 373.15 K = 671.67°R
The temperature at which pure water boils at standard atmospheric pressure
Room Temperature
20°C = 68°F = 293.15 K = 528.67°R
Typical comfortable indoor temperature
Human Body Temperature
37°C = 98.6°F = 310.15 K = 558.27°R
Normal human body temperature
Quick Temperature References
Temperature Scale Facts
Celsius is named after Swedish astronomer Anders Celsius (1742)
Kelvin is the SI base unit for thermodynamic temperature
Fahrenheit is commonly used in the United States
Rankine is the absolute temperature scale for Fahrenheit
Absolute zero is -273.15°C or 0 K
Understanding Temperature Scales
What is the Celsius Scale?
The Celsius scale, invented in 1742 by Swedish astronomer Anders Celsius, is based on the freezing and boiling points of water. The freezing point is set as 0°C, and the boiling point is set as 100°C, with 100 degrees between these two reference points.
Why Use Different Temperature Scales?
Different temperature scales were developed for various purposes and regions. Scientific applications often use Kelvin for absolute measurements, while Fahrenheit remains common in everyday use in some countries.
Absolute Temperature
Kelvin and Rankine are absolute temperature scales, starting from absolute zero where all molecular motion theoretically stops. This makes them essential for scientific calculations.
Key Conversion Formulas
Celsius to Fahrenheit:
°F = (9/5 × °C) + 32
Celsius to Kelvin:
K = °C + 273.15
Celsius to Rankine:
°R = (9/5 × °C) + 491.67
Common Applications
- •Science & Research: Kelvin for thermodynamics and physics
- •Weather & Daily Use: Celsius in most countries, Fahrenheit in US
- •Engineering: Rankine for thermodynamic calculations in imperial units
Quick Tip: To quickly estimate Celsius to Fahrenheit, double the Celsius value and add 30. This gives you a close approximation!