Fahrenheit to Celsius converter
Provide a temperature below to convert Fahrenheit (°F) to Celsius (°C). For the reverse direction, visit the Celsius to Fahrenheit converter.
To convert Fahrenheit to Celsius, subtract 32 from the Fahrenheit temperature and multiply by 5/9. The formula is: °C = (°F - 32) × 5/9.
For example, 32°F equals 0°C, the freezing point of water. 212°F equals 100°C, the boiling point of water at sea level.
Fahrenheit
Definition: Fahrenheit (symbol: °F) is a temperature scale where the freezing point of water is 32°F and the boiling point is 212°F at standard atmospheric pressure.
History: Created by Daniel Gabriel Fahrenheit in 1724, the scale originally used a mixture of ice, water, and ammonium chloride as its zero point. The scale was later standardized using water's freezing and boiling points.
Current use: Fahrenheit remains the dominant temperature scale in the United States and its territories. It is also used in some Caribbean countries. For scientific work, Celsius is preferred.
Celsius
Definition: Celsius (symbol: °C), also known as centigrade, is a temperature scale where 0°C is the freezing point of water and 100°C is the boiling point under standard conditions.
History: Anders Celsius proposed this scale in 1742, though initially with the values reversed. After his death, the scale was inverted to its current form and became the standard for scientific temperature measurement.
Current use: Celsius is the standard temperature scale in the International System of Units and is used in most countries worldwide for both everyday and scientific temperature measurements.
| Fahrenheit [°F] | Celsius [°C] |
|---|---|
| -40 °F | -40 °C |
| -4 °F | -20 °C |
| 32 °F | 0 °C |
| 50 °F | 10 °C |
| 68 °F | 20 °C |
| 77 °F | 25 °C |
| 86 °F | 30 °C |
| 98.6 °F | 37 °C |
| 122 °F | 50 °C |
| 212 °F | 100 °C |