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Fahrenheit to Celsius Converter

Convert Fahrenheit to Celsius and Celsius to Fahrenheit instantly. Bidirectional temperature converter with formula and common values.

°F

Celsius

22.22

°C

72 °F = 22.22 °C

°C = (°F − 32) × 5/9

Fahrenheit to Celsius: To convert fahrenheit to celsius, apply °C = (°F − 32) × 5/9. Unlike linear unit conversions, fahrenheit and celsius use different zero points, so a fixed multiplier is not sufficient.

How to Convert Fahrenheit to Celsius

Converting between fahrenheit and celsius requires both a scale factor and an offset because the two scales use different zero points. The formula below handles both adjustments.

Conversion Formula

  • Fahrenheit to Celsius: °C = (°F − 32) × 5/9
  • Celsius to Fahrenheit: °F = °C × 9/5 + 32

Fahrenheit to Celsius Conversion Chart

Fahrenheit (°F)Celsius (°C)
0.1-17.722222
0.25-17.638889
0.5-17.5
1-17.222222
2-16.666667
3-16.111111
5-15
10-12.222222
20-6.666667
25-3.888889
5010
10037.777778
250121.111111
1000537.777778

Understanding the Units

What is a Fahrenheit?

The degree Fahrenheit is a temperature scale on which water freezes at 32 °F and boils at 212 °F at standard atmospheric pressure.

Named after Daniel Gabriel Fahrenheit (1686–1736), German-Polish physicist who developed the mercury thermometer.

Common contexts: US weather, US cooking.

What is a Celsiu?

The degree Celsius is a derived SI unit of temperature where 0 °C corresponds to the freezing point of water and 100 °C to the boiling point at standard atmospheric pressure.

Named after Anders Celsius (1701–1744), Swedish astronomer who proposed the original scale in 1742.

Common contexts: weather, cooking, science.

Real-World Reference Points

Item Fahrenheit (°F) Celsius (°C)
Water freezing point320
Comfortable room7021.1111
Human body temperature98.637
Water boiling point212100

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FAQ

How do I convert Fahrenheit to Celsius?

Subtract 32 from the Fahrenheit value, then multiply by 5/9. For example, 72.5°F: (72.5 − 32) × 5/9 = 22.5°C.

What temperature is the same in both Fahrenheit and Celsius?

-40 degrees is the same in both scales: -40°F = -40°C.

What is normal body temperature in both scales?

Normal body temperature is approximately 98.6°F or 37°C.

How do I convert Celsius to Fahrenheit?

Multiply the Celsius value by 9/5, then add 32. For example, 22.5°C: (22.5 × 9/5) + 32 = 72.5°F.

How do you convert fahrenheit to celsius?

Apply the formula °C = (°F − 32) × 5/9. For example, fahrenheit of 0 corresponds to -17.777778 celsius.

How do you convert celsius back to fahrenheit?

Use the inverse formula: °F = °C × 9/5 + 32.

Why isn't fahrenheit-to-celsius a simple multiplication?

Fahrenheit and Celsius use different zero points, so the relationship includes both a scale factor and an offset. The scale factor alone gives the rate of change but not the absolute value.

What is the difference between Fahrenheit and Celsiu?

The degree Fahrenheit is a temperature scale on which water freezes at 32 °F and boils at 212 °F at standard atmospheric pressure. The degree Celsius is a derived SI unit of temperature where 0 °C corresponds to the freezing point of water and 100 °C to the boiling point at standard atmospheric pressure.