Fahrenheit to Celsius Converter — Free & Instant

What This Tool Does

This tool converts a temperature in Fahrenheit to Celsius using the standard formula (°C = (°F − 32) × 5/9). It's aimed at anyone in a Celsius-using country (which is most of the world, including India) making sense of a temperature quoted in Fahrenheit — common in US weather reports, US oven and appliance settings, and some older thermometers.

How to Use It

Type your temperature in Fahrenheit into the value field (the tool is pre-set to convert Fahrenheit → Celsius).
Press Convert.
Your result in Celsius appears instantly. Need a different unit pair? The Category, From and To dropdowns above the result still work if you want to switch.

Example

A US weather app showing 75°F converts to 23.9°C — a pleasant, mild day, even though the raw number "75" might sound hot to someone used to Celsius, where 75 would mean an extreme heatwave.

Frequently Asked Questions

What is the exact formula?

°C = (°F − 32) × 5/9. So 32°F (freezing point of water) equals 0°C, and 212°F (boiling point) equals 100°C.

Is a 100°F fever the same as a 100°C fever?

No, and this is a common point of confusion — 100°F converts to only 37.8°C, a mild fever, whereas 100°C would be the boiling point of water and not a survivable body temperature. Always check which scale a reading uses before reacting to it.

Why do American weather reports use Fahrenheit?

The US is one of the few countries that never adopted Celsius as its everyday temperature scale, so Fahrenheit remains standard there for weather, home thermostats and cooking, unlike almost everywhere else.