Temperature Converter
Convert between Celsius, Fahrenheit, Kelvin, and other temperature scales
1 Celsius (°C)=0 Fahrenheit (°F)
Conversion Formula
Step-by-Step Calculation:
Multiply 1 °C by 9/5 (1.8), then add 32 to get 0 °F.
Conversion Table
| Celsius (°C) | Fahrenheit (°F) |
|---|---|
| 0.01 | 32.018 |
| 0.1 | 32.18 |
| 1 | 33.8 |
| 2 | 35.6 |
| 5 | 41 |
| 10 | 50 |
| 20 | 68 |
| 50 | 122 |
| 100 | 212 |
Common Temperature Conversions
Unit Information & History
Celsius
Definition: A scale of temperature where 0°C is the freezing point of water and 100°C is the boiling point (at standard pressure).
History: Invented by Swedish astronomer Anders Celsius in 1742. Interestingly, he originally defined 100 as freezing and 0 as boiling; the scale was reversed to its modern form by Carl Linnaeus shortly after.
Current Use: The standard temperature scale for the entire world (weather, cooking, science), except for the United States.
Fahrenheit
Definition: A scale where 32°F is the freezing point of water and 212°F is the boiling point.
History: Proposed by Daniel Gabriel Fahrenheit in 1724. He based 0°F on the coldest temperature he could create in his lab with a mixture of ice, water, and salt, and ~96°F as human body temperature.
Current Use: The official temperature scale of the United States, used for weather forecasts, cooking, and industrial applications.
Kelvin
Definition: The base unit of temperature in the SI system. 0 K is absolute zero, the theoretical point where all thermal motion stops.
History: Named after Lord Kelvin, who proposed the absolute scale in 1848. Unlike Celsius or Fahrenheit, it is not referred to as "degrees", just "Kelvin".
Current Use: Used primarily in science and engineering, particularly in physics, chemistry, and astronomy.
Frequently Asked Questions
Quick answers to common questions
Q:How do I convert Celsius to Fahrenheit?
Multiply the Celsius value by 9, divide by 5, then add 32. For example, 25°C × 9/5 + 32 = 77°F.
Q:What is absolute zero?
Absolute zero is -273.15°C, -459.67°F, or 0 Kelvin. It is the lowest possible temperature where molecular motion stops.
Q:What temperature is the same in Celsius and Fahrenheit?
-40 degrees: -40°C equals -40°F. It's the only point where the two scales meet.
Q:How do I convert Fahrenheit to Celsius?
Subtract 32 from the Fahrenheit value, multiply by 5, then divide by 9. For example, 98.6°F - 32 × 5/9 = 37°C.