Fahrenheit to Celsius converter
Type either value and the other one updates as you type.
- Degrees Celsius (°C)
- 37
98.6 °F = 37 °C.
Degrees Celsius (°C): 37. 98.6 °F = 37 °C.
Degrees Celsius (°C) by degrees Fahrenheit (°F)
How to calculate
Converts degrees Fahrenheit (°F) to degrees Celsius (°C) and back, with the exact unit definitions.
Example with the default inputs (Degrees Fahrenheit (°F) 98.6): 98.6 °F = 37 °C.
Formula: °C = (°F − 32) × 5 ÷ 9
- Temperature scales have different zero points, so the conversion adds or subtracts as well as multiplies.
- The answer shows at most 6 decimal places; the calculation keeps full precision.
Worked examples
Each example is checked against the calculator on every build.
- Degrees Fahrenheit (°F) 212 gives Degrees Celsius (°C) 100.Source: exact unit definitions in NIST SP 811 (2008), Appendix B.8
- Degrees Fahrenheit (°F) 98.6 gives Degrees Celsius (°C) 37.Source: exact unit definitions in NIST SP 811 (2008), Appendix B.8
- Degrees Celsius (°C) 37 gives Degrees Fahrenheit (°F) 98.6.Source: exact unit definitions in NIST SP 811 (2008), Appendix B.8
Other questions people ask
What is the formula to convert Fahrenheit to Celsius?
°C = (°F − 32) × 5 ÷ 9. For example, 98.6 °F is 37 °C.
How do I convert Fahrenheit to Celsius?
Use °C = (°F − 32) × 5 ÷ 9. 98.6 °F gives 37 °C.
How do I convert Celsius back to Fahrenheit?
Reverse the formula, or type the degrees Celsius into the second box and the converter works it out.
At what temperature are Fahrenheit and Celsius equal?
At −40. −40 °F is −40 °C, because (−40 − 32) × 5 ÷ 9 = −40.