Temperature
°Fto°C
Convert degrees Fahrenheit (°F) to degrees Celsius (°C).
Converter
°F
Accepts numbers or expressions, e.g. 150 + 14.7
Result
°C
Rendered to 6 significant figures.
Formula
Formula
°C = (°F − 32) × 5⁄9
Temperature conversions involve different scale zero-points, so a single multiplicative factor does not exist. Apply the formula to each value individually.
Worked example
Convert 212 °F to °C.
- 01212 − 32 = 180.0000
- 02180.0000 × 5⁄9 = 100.0000 °C
Result212 °F = 100 °C
Conversion table
| °F | °C |
|---|---|
| -40 | -40 |
| 0 | -17.778 |
| 32 | 0 |
| 50 | 10 |
| 68 | 20 |
| 100 | 37.778 |
| 200 | 93.333 |
| 300 | 148.89 |
| 500 | 260 |
| 1000 | 537.78 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the formula to convert °F to °C?
Temperature conversions are not a single multiplier because the scales have different zero points. Use °C = (°F − 32) × 5⁄9 to convert any value of °F to °C.
How do I convert 1 °F to °C?
1 °F corresponds to -17.2222 °C. Apply the formula °C = (°F − 32) × 5⁄9 to your value.
How do I convert °C back to °F?
Use the inverse formula. For example, to go from °C back to °F, rearrange °C = (°F − 32) × 5⁄9 for °F. See the °C to °F page for the direct formula.
When would I need to convert degree Fahrenheit to degree Celsius?
Temperature scale conversions are routine in process engineering: instrumentation often reads in °C or °F, while thermodynamic calculations (gas laws, enthalpy) require absolute units (K or °R). Always use absolute units for any equation involving a ratio of temperatures.
Is the conversion exact?
Yes — the temperature scale relationships are exact by definition (the Celsius–Kelvin offset is 273.15 exactly; the Fahrenheit–Rankine offset is 459.67 exactly).