How temperature converter works
This converter handles the three most common temperature scales: Celsius, Fahrenheit, and Kelvin. It first converts the input to Celsius as the base unit, then converts from Celsius to the target unit. The formulas are exact: C to F is (C times 9/5) plus 32, and C to K is C plus 273.15.
Celsius is the standard for most of the world and for scientific work. Fahrenheit is used in the United States for everyday temperatures. Kelvin is the absolute temperature scale used in physics and engineering, where 0 K is absolute zero, the theoretical point where molecular motion stops.
The converter handles any combination of units and rounds results to six decimal places. Common reference points: water freezes at 0 C / 32 F / 273.15 K and boils at 100 C / 212 F / 373.15 K.
Frequently asked questions
How do I convert Celsius to Fahrenheit?
Multiply the Celsius value by 9, divide by 5, then add 32. For example, 100 C becomes (100 times 9 / 5) + 32 = 212 F. The converter does this automatically.
How do I convert Fahrenheit to Celsius?
Subtract 32, multiply by 5, then divide by 9. For example, (68 - 32) times 5 / 9 = 20 C. The converter handles this for any value.
What is Kelvin?
Kelvin is the absolute temperature scale used in science. It starts at absolute zero (0 K = -273.15 C), the point where molecular motion stops. To convert Celsius to Kelvin, add 273.15.
Why are there different temperature scales?
Celsius is metric and used worldwide. Fahrenheit is used mainly in the US. Kelvin is the scientific standard because it is absolute (no negative values). The converter bridges all three.
