degree Fahrenheit to degree Celsius
Live degree Fahrenheit (°F) to degree Celsius (°C) converter. Plus a 10-value reference table and FAQs.
Conversion table
Ten sample values from degree Fahrenheit to degree Celsius. Use the converter above for arbitrary values.
| degree Fahrenheit (°F) | → | degree Celsius (°C) |
|---|---|---|
| 0.001 °F | → | -17.777222 °C |
| 0.01 °F | → | -17.772222 °C |
| 0.1 °F | → | -17.722222 °C |
| 0.5 °F | → | -17.5 °C |
| 1 °F | → | -17.222222 °C |
| 2 °F | → | -16.666667 °C |
| 5 °F | → | -15 °C |
| 10 °F | → | -12.222222 °C |
| 100 °F | → | 37.777778 °C |
| 1,000 °F | → | 537.777778 °C |
About the degree Fahrenheit
Water freezes at 32°, boils at 212°. Common in the US.
About the degree Celsius
Water freezes at 0°, boils at 100° at standard pressure.
How degree Fahrenheit to degree Celsius conversion works
Temperature scales are affine: the result needs both a scale factor and a zero-point offset. That is why °F to °C cannot be reduced to a simple percentage change.
The right unit depends on the convention used by your industry, country, instrument, or source document.
Unit definitions and conversion factors are maintained in the Unitbox methodology. Last reviewed with the current conversion dataset.
Frequently asked questions
Frequently Asked Questions
How do I convert degree Fahrenheit to degree Celsius?
Multiply the degree Fahrenheit value by -17.222222 to get it in degree Celsius. For example, 10 °F = -12.2222 °C.
What is 1 °F in °C?
1 °F = -17.222222 °C.
What is 100 °F in °C?
100 °F = 37.7778 °C.
What is the formula?
Temperature is an affine quantity. The formula depends on the source and target scales; °F → °C uses: T(°C) = T(°F) × 0.555556 + -17.777778, then applies the inverse on the other side.
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