🌡️ Fahrenheit to Celsius Calculator
Instantly convert temperatures from Fahrenheit (°F) to Celsius (°C). The Celsius scale is the most widely used temperature scale worldwide, with 0 °C being the freezing point and 100 °C the boiling point of water at standard atmospheric pressure.
What Is the Celsius Scale?
The Celsius scale (°C) is a temperature scale named after the Swedish astronomer Anders Celsius (1701–1744). It is the most widely used temperature scale in the world, adopted by most countries for everyday use, as well as by the scientific community.
Key characteristics of the Celsius scale:
- Freezing point of water: 0 °C (32 °F).
- Boiling point of water: 100 °C (212 °F) at standard atmospheric pressure.
- Absolute zero: −273.15 °C (−459.67 °F, 0 K).
- Degree size: A degree Celsius is the same size as a kelvin (1/100 of the difference between the freezing and boiling points of water).
- Conversion from Fahrenheit: °C = (°F − 32) × 5/9.
The Celsius scale is used in everyday weather forecasts, cooking, healthcare, and scientific research worldwide.
How to Convert Fahrenheit to Celsius
The formula to convert Fahrenheit to Celsius is:
°C = (°F − 32) × 5/9
Alternatively: °C = (°F − 32) ÷ 1.8
This formula works because:
- Subtracting 32 converts the Fahrenheit temperature to the zero point of the Celsius scale.
- Multiplying by 5/9 (or dividing by 1.8) adjusts for the different degree sizes between the two scales.
For example, to convert 100 °F to Celsius:
°C = (100 − 32) × 5/9
°C = 68 × 5/9
°C = 37.78 °C
100 °F = 37.78 °C
Why Use This Converter?
- Instant results: Get accurate conversions in real-time.
- Step-by-step breakdown: See exactly how the conversion is calculated.
- Common reference table: Quickly check temperatures from −40 °F to 400 °F.
- Free & private: No registration, no data storage — all calculations are done in your browser.
❓ Fahrenheit to Celsius FAQ
What is the formula to convert Fahrenheit to Celsius?
The formula is °C = (°F − 32) × 5/9. You can also use °C = (°F − 32) ÷ 1.8.
What is the difference between Fahrenheit and Celsius?
Fahrenheit is a temperature scale where 32 °F is the freezing point of water and 212 °F is the boiling point. Celsius is a temperature scale where 0 °C is the freezing point and 100 °C is the boiling point. A degree Celsius is larger than a degree Fahrenheit (1 °C = 1.8 °F).
What is the freezing point of water in Fahrenheit and Celsius?
Water freezes at 32 °F and 0 °C.
What is the boiling point of water in Fahrenheit and Celsius?
Water boils at 212 °F and 100 °C at standard atmospheric pressure.
What is body temperature in Fahrenheit and Celsius?
Normal body temperature is approximately 98.6 °F and 37 °C.
What is absolute zero in Fahrenheit and Celsius?
Absolute zero is −459.67 °F and −273.15 °C.
Who invented the Celsius scale?
The Celsius scale was invented by Anders Celsius (1701–1744), a Swedish astronomer.
What is room temperature in Fahrenheit and Celsius?
Room temperature is typically considered to be around 72 °F and 22.22 °C.
How accurate is this converter?
This converter provides highly accurate results using the standard conversion formula °C = (°F − 32) × 5/9. You can adjust the decimal precision to suit your needs.
Is this converter free?
Yes, this converter is completely free to use. No registration or personal data storage is required.