F to C Converter
Convert Fahrenheit (°F) to Celsius (°C). Includes rounding controls, common temperature references, and input validation.
Enter °F then convert. Press Ctrl/Cmd + Enter.
Result will appear here.
| Reference | °F | °C |
|---|
Privacy: runs locally in your browser. No inputs are stored or transmitted.
How it works
°C = (°F − 32) × 5/9
Reverse: °F = (°C × 9/5) + 32
Examples
- 32°F = 0°C
- 77°F = 25°C
- 212°F = 100°C
FAQ
- What is the formula for converting °F to °C?
°C = (°F − 32) × 5/9.
- Can Fahrenheit values be negative?
Yes. Fahrenheit can be below 0 (e.g., −40°F). The converter supports negative values.
- Is there a minimum possible temperature?
Yes. Absolute zero is −459.67°F (which equals −273.15°C). Values below that are not physically meaningful; this tool flags them as invalid.
- Are my inputs stored?
No. All calculations run locally in your browser.