Fahrenheit to Celsius Converter
Convert Fahrenheit (°F) to Celsius (°C) instantly and accurately.
Convert Fahrenheit to Celsius instantly with this free online tool. Type a temperature in Fahrenheit and see the Celsius value right away, or type Celsius to convert back. Everything runs in your browser — no sign-up and no waiting.
How to convert Fahrenheit to Celsius
To convert Fahrenheit to Celsius, subtract 32 and then divide by 1.8 (that is 9/5). For example, (212 °F − 32) ÷ 1.8 = 100 °C, the boiling point of water. Water freezes at 32 °F, which is 0 °C. This converter does the math for you and updates as you type.
- Enter the temperature in Fahrenheit in the first field.
- Read the result in Celsius in the second field.
- Type into the Celsius field to convert in the other direction.
Why use this Fahrenheit to Celsius converter?
- 100% free with no ads, sign-up, or limits.
- Instant, two-way conversion as you type.
- Handles negative temperatures correctly.
- Runs entirely in your browser.
Frequently asked questions
What is the formula to convert Fahrenheit to Celsius?
Celsius = (Fahrenheit − 32) ÷ 1.8, which is the same as (Fahrenheit − 32) × 5/9.
What is 98.6 °F in Celsius?
98.6 °F equals 37 °C, the typical normal human body temperature.
At what temperature are Fahrenheit and Celsius equal?
They are equal at −40 degrees: −40 °F is exactly −40 °C.