Fahrenheit to Celsius Converter — °F to °C
Convert Fahrenheit to Celsius and back instantly. Free temperature converter with common reference points.
Tool Interface
Temperature converter
Common reference points
| °F | °C |
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How to use
- Enter the temperature and choose the direction — Fahrenheit to Celsius or Celsius to Fahrenheit.
- Click Convert — the result appears instantly, with the reverse conversion shown below it.
- The reference table covers everyday points like freezing, room temperature, body temperature, and boiling.
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About This Tool
Convert Fahrenheit to Celsius Instantly
The Fahrenheit to Celsius Converter switches temperatures between the two most common scales in one click. Enter a temperature, choose the direction, and the tool shows the result instantly along with the reverse conversion. It uses the exact formulas every time, so there is no mental math and no rounding mistakes.
It is useful for recipes, weather, science homework, travel and medical readings. A reference table covers everyday points like freezing, room temperature, body temperature and boiling. The tool is free and needs no signup.
How to Use the Temperature Converter
Three steps to your converted temperature.
- Enter the temperature: Type the value you want to convert.
- Choose the direction: Select Fahrenheit to Celsius or Celsius to Fahrenheit.
- Click Convert: The result appears instantly, with the reverse conversion shown below it for reference.
Conversion Formulas
- Fahrenheit to Celsius: Degrees C = (degrees F minus 32) times 5/9. So 98.6 F equals 37 C.
- Celsius to Fahrenheit: Degrees F = (degrees C times 9/5) plus 32. So 20 C equals 68 F.
- Common points: Water freezes at 32 F (0 C) and boils at 212 F (100 C). Room temperature is around 68 to 72 F (20 to 22 C).
- Quick estimate: Subtract 30 from the F value and halve it for a rough C value.
Key Features
- Two way conversion: Convert in either direction with one click.
- Reverse result shown: Every conversion also displays the reverse value.
- Reference table: Everyday temperature points at a glance.
- Exact formulas: Proper 5/9 and 9/5 math, no approximations.
- Free and instant: No signup, no cost, results immediately.
Frequently Asked Questions (FAQ)
Is the Fahrenheit to Celsius Converter free? Yes. It is completely free with no signup.
What is the formula? To get Celsius, subtract 32 from Fahrenheit and multiply by 5/9. To get Fahrenheit, multiply Celsius by 9/5 and add 32.
Can I convert Celsius back to Fahrenheit? Yes. Switch the direction and the tool applies the reverse formula.
Why does the US use Fahrenheit? Historical convention. Most of the world uses Celsius, which is why travelers, cooks and students convert so often.
What is normal body temperature in both scales? About 98.6 F, which equals 37 C.
Does it work on my phone? Yes. The converter runs in your browser and works on any device.
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