Fahrenheit to Celsius Converter
Convert °F to °C
Enter a temperature in Fahrenheit, and this tool will instantly convert it into Celsius.
Whether you're reading international weather forecasts, using an imported recipe, or working on scientific conversions, this calculator gives you an exact temperature reading instantly.
How to Use this Converter
Using the converter is simple:
- Standard Input: Enter a temperature in Fahrenheit (e.g., 68).
- Reverse Calculation: Type a temperature in Celsius to see the Fahrenheit equivalent.
- Quick Select: Check the box to quickly pick from common temperatures like Room Temp, Boiling, or Freezing points.
The converter automatically calculates the equivalent temperature instantly.
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Fahrenheit to Celsius Formula
To convert Fahrenheit to Celsius, you subtract 32 from the Fahrenheit temperature, and then multiply the result by 5/9 (or roughly 0.5556).
°C = (°F - 32) × 5/9
Conversely, to calculate Fahrenheit from Celsius, multiply the Celsius temperature by 9/5 (or 1.8), and then add 32.
°F = (°C × 1.8) + 32
Example
If the weather forecast says it is 77°F:
(77 - 32) × 5/9 = 45 × 5/9 = 25°C
Therefore, 77°F is exactly 25°C.
Common Use Cases & Examples
People frequently need to convert Fahrenheit to Celsius when dealing with international standards. Here are some common examples:
| Use Case | Example Search | Why Users Need It | Result (°C) |
|---|---|---|---|
| Weather & Travel | 80 f to c | Understanding American weather in metric units | 26.67 °C |
| Cooking & Baking | 350 f to c | Following American recipes for oven temps | 176.67 °C |
| Health & Medical | 100 f to c | Checking for a fever with a Celsius thermometer | 37.78 °C |
| Science & Lab | -40 f to c | Working in scientific environments | -40 °C |
| General Knowledge | 212 f to c | Knowing the boiling point of water | 100 °C |
| Water Heaters | 120 f to c | Setting a safe household water temperature | 48.89 °C |