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1 fahrenheit to celsius (1 f to c)
1 °F equals -17.222 °C. This is the exact conversion for 1 fahrenheit to celsius, derived from exact SI/NIST definitions using the affine °C/°F formula (°F = °C × 9/5 + 32, not a simple multiply). It's also written 1 °F to °C, 1 f to c, 1 degrees fahrenheit to celsius, 1 degrees f to c. See nearby values below, or open the full Unit Converter to convert any other value or unit.
1 °F = -17.222 °C
- 1 °F = -17.222 °C
- Temperature is affine — °F = °C × 9/5 + 32 (not a factor)
Frequently asked questions
What is 1 fahrenheit in celsius?
1 °F is -17.222 °C. Temperature converts with the affine formula (°F = °C × 9/5 + 32), not a single multiplier.
How do I convert fahrenheit to celsius?
Apply the affine temperature formula rather than multiplying (°F = °C × 9/5 + 32). Open the full Unit Converter to convert any value.
Is 1 °F to °C the same as 1 fahrenheit to celsius?
Yes — 1 °F to °C and 1 fahrenheit to celsius are the same conversion: 1 °F = -17.222 °C.