Convert Celsius to Fahrenheit

What is a Celsius to Fahrenheit conversion?

One celsius (°C) is equal to 33.8 fahrenheit (°F). This relationship is fixed by international measurement standards and does not change. To convert any number of celsius to fahrenheit, multiply your value by 33.8; to go the other way, divide by 33.8.

How to convert Celsius to Fahrenheit

The conversion formula is: °F = (°C × 9/5) + 32. Enter any value into the converter above and the result updates instantly. The formula is also shown alongside the answer so you can check the working or use it in your own calculations.

Where is this conversion used?

Temperature conversions matter in cooking, meteorology, medicine, chemistry, and international travel. Celsius is the standard in most countries, while the United States uses Fahrenheit; Kelvin is used in scientific contexts. Meteorologists, chefs, doctors, chemists, and HVAC engineers all work with temperature conversions. A quick mental shortcut: to convert Celsius to Fahrenheit, double the Celsius value and add 30 (for an approximation); for precision, multiply by 9/5 and add 32.

Helpful tip

Absolute zero — the coldest possible temperature — is 0 K, which equals −273.15 °C or −459.67 °F. No physical system can reach or go below this point.