Understanding Temperature Scales
The world primarily uses two different temperature scales: Celsius and Fahrenheit. Whether you are traveling internationally, following a recipe, or working on a science project, being able to quickly convert between them is essential. Our Celsius to Fahrenheit Calculator does the math for you instantly.
We also automatically calculate the Kelvin (K) equivalent, which is the base unit of temperature in the International System of Units (SI), commonly used in physics and engineering.
The Conversion Formulas
If you want to do the math yourself, here are the standard formulas used for temperature conversion:
-
Celsius to Fahrenheit:
°F = (°C × 9/5) + 32 -
Fahrenheit to Celsius:
°C = (°F − 32) × 5/9 -
Celsius to Kelvin:
K = °C + 273.15
Important Milestones
Here are some common reference points to help you understand the scales:
| Description | Celsius | Fahrenheit |
|---|---|---|
| Absolute Zero | -273.15 °C | -459.67 °F |
| Freezing point of water | 0 °C | 32 °F |
| Normal body temperature | 37 °C | 98.6 °F |
| Boiling point of water | 100 °C | 212 °F |
Fun Fact: -40 °C is exactly equal to -40 °F! They intersect at this point. Learn more about the Fahrenheit scale on Wikipedia.