Fahrenheit to Celsius Converter
Formula
To convert Fahrenheit to Celsius, subtract 32 from the Fahrenheit temperature, then multiply by 5/9 (or divide by 1.8). The Fahrenheit scale sets water's freezing point at 32° and boiling at 212°, while Celsius uses 0° and 100°.
How to use
- Enter the Temperature in Fahrenheit.
- The tool subtracts 32 and multiplies by 5/9.
- Read the converted Temperature in Celsius.
Example
To convert 32°F: (32 − 32) × 5/9 = 0°C. That's the freezing point of water on both scales lined up.
Frequently Asked Questions
What is 32°F in Celsius?
What is 212°F in Celsius?
What is 98.6°F in Celsius?
What is room temperature in Fahrenheit?
Is there a quick way to estimate Fahrenheit to Celsius in my head?
At what temperature are Fahrenheit and Celsius the same?
Converting Fahrenheit to Celsius
The formula is C = (F − 32) × 5/9. You subtract 32 first because the two scales have different zero points — water freezes at 32 °F but 0 °C — and then multiply by 5/9 because a Celsius degree is larger than a Fahrenheit degree (there are 100 Celsius degrees between freezing and boiling, but 180 Fahrenheit degrees).
The two scales cross at −40°, where −40 °F equals −40 °C exactly. That is the one temperature you never have to convert.
Temperatures worth knowing
A handful of anchors covers most everyday needs: 32 °F = 0 °C (freezing), 68–72 °F = 20–22 °C (room temperature), 98.6 °F = 37 °C (body temperature), and 212 °F = 100 °C (boiling at sea level). In the kitchen, the common 350 °F baking temperature is about 177 °C, and 400 °F is roughly 204 °C.
For a rough mental estimate, subtract 30 and halve: 70 °F → (70−30)/2 = 20 °C, against the exact 21.1 °C. Close enough to dress for the weather, but use the full formula for cooking and medical readings.