Convert Fahrenheit to Celsius
Convert temperatures from Fahrenheit (°F) to Celsius (°C) with precision.
What is Fahrenheit to Celsius Conversion?
Most of the world uses Celsius, but the US uses Fahrenheit. Converting Fahrenheit to Celsius helps you understand weather forecasts, bake recipes, or communicate with international colleagues.
Fahrenheit to Celsius Formula:
To convert degrees Fahrenheit to degrees Celsius, subtract 32 and then multiply by 5/9 (approx 0.5556).
°C = (°F - 32) × 5/9
How to Convert °F to °C?
- Start with Fahrenheit: Enter the temperature in degrees Fahrenheit.
- Subtract 32: This removes the freezing point offset.
- Multiply by 5/9: This scales the unit back to Celsius.
- Examples:
- 32°F (Freezing) - 32 = 0 × 5/9 = 0°C
- 212°F (Boiling) - 32 = 180 × 5/9 = 100°C
- 68°F (Room Temp) - 32 = 36 × 5/9 = 20°C
Celsius (°C) | The Metric Standard
The degree Celsius is a unit of temperature on the Celsius scale, originally known as the centigrade scale. The degree Celsius is the standard unit of temperature for almost the entire world.
Key Points
- 0°C: Freezing point of water.
- 100°C: Boiling point of water (at sea level).
- 37°C: Average human body temperature.
Fahrenheit (°F) | The US Standard
The Fahrenheit scale is a temperature scale based on one proposed in 1724 by physicist Daniel Gabriel Fahrenheit. It uses the degree Fahrenheit as the unit.
Key Points
- 32°F: Freezing point of water.
- 212°F: Boiling point of water.
- 98.6°F: Average human body temperature.
Frequently Asked Questions
What is 100°F in Celsius?
(100 - 32) × 5/9 = 37.78°C. This is a very hot day or a low-grade fever.
How do I mentally convert F to C?
A rough estimate: Subtract 30 and divide by 2. e.g., 70°F - 30 = 40 / 2 = 20°C (Actual is 21.1°C).
Common Conversions
Quick Facts
- • Water freezes at 0°C / 32°F
- • Water boils at 100°C / 212°F
- • Body temp is approx 37°C / 98.6°F