32°F to 0°C
(32 − 32) × 5/9 = 0°C
water freezes
Fahrenheit (°F) to Celsius (°C) Converter
Fahrenheit (°F) and Celsius (°C) are temperature scales used to measure temperature.
Formula: °C = (°F - 32) × 5/9
Common reference points:
- Water freezing: 32°F = 0°C
- Water boiling: 212°F = 100°C
- Body temperature: 98.6°F = 37°C
- Room temperature: ~70°F = ~21°C
Fahrenheit to Celsius Converter
Quick Answer
1 °F = -17.2222 °C
Formula: Celsius = (Fahrenheit - 32) x 5/9
Formula verifiedLive calculation
To (Celsius)
°C
Quick values
How to Convert Fahrenheit to Celsius
Use the exact formula °C = (°F − 32) × 5/9.
- Subtract 32 from the Fahrenheit temperature.
- Multiply the result by 5.
- Divide by 9 and round only at the end.
Worked conversion examples
68°F to 20°C
(68 − 32) × 5/9 = 20°C
room temperature
77°F to 25°C
(77 − 32) × 5/9 = 25°C
warm day
98.6°F to 37°C
(98.6 − 32) × 5/9 = 37°C
body-temperature reference
350°F to 176.7°C
(350 − 32) × 5/9 = 176.7°C
common oven setting
−40°F to −40°C
(−40 − 32) × 5/9 = −40°C
the scales are equal
Mental shortcut: For a quick estimate, subtract 30 and divide by 2. This is useful for mental arithmetic but is not the exact formula.
View the complete Fahrenheit to Celsius chart →Accuracy, standards, and review
Values use the exact temperature-scale relationship in the shared conversion engine. Intermediate values are not rounded; displayed answers are rounded only for readability.
Reviewed by the All Unit Conversions Editorial Team. Updated .
What are Temperature Scales?
Temperature scales are systems used to measure and quantify thermal energy. The two most common scales worldwide are Celsius (°C) and Fahrenheit (°F), each with different reference points and intervals.
The Fahrenheit scale sets 32°F as water's freezing point and 212°F as water's boiling point at standard atmospheric pressure. The Celsius scale is defined by setting 0°C at water's freezing point and 100°C at water's boiling point.
Learn more about temperature standards from Bureau International des Poids et Mesures (BIPM) or NIST.
Common Temperature Conversions
| Fahrenheit (°F) | Celsius (°C) | Common Reference |
|---|---|---|
| -40 | -40 | Equal temperature point |
| 0 | -17.78 | Very cold winter day |
| 32 | 0 | Water freezing point |
| 50 | 10 | Cool day |
| 68 | 20 | Room temperature |
| 86 | 30 | Hot summer day |
| 98.6 | 37 | Normal body temperature |
| 212 | 100 | Water boiling point |
Practical Use Cases
- Weather Forecasting: Converting between scales when traveling or following international weather reports
- Cooking and Baking: Converting oven temperatures from recipes written in different standards (US vs. international)
- Healthcare: Converting body temperature readings between systems for medical assessment
- Science Education: Understanding temperature relationships for students learning physical sciences
- Industrial Processes: Setting and monitoring temperature controls in manufacturing that may use different scales
- Tourism: Understanding local temperature forecasts when traveling between regions using different scales
Educational Resource
This educational video explains the relationship between Fahrenheit and Celsius temperature scales and demonstrates how to convert between them with practical examples.
Conversion Tools
View the full Fahrenheit to Celsius conversion chart (HTML) →Download Conversion Chart (PDF)Get our comprehensive Fahrenheit to Celsius conversion chart for quick reference when you're offline.
Related Conversions
This conversion cluster
Fahrenheit to Celsius Conversion FAQs
Find answers to common questions about converting between Fahrenheit and Celsius temperatures.