98.6 degrees Fahrenheit is equal to 37 degrees Celsius. The conversion from Fahrenheit to Celsius is done using the formula:
C = (F – 32) × 5/9
Where C is the temperature in Celsius and F is the temperature in Fahrenheit. Plugging in 98.6 for F:
C = (98.6 – 32) × 5/9
C = 66.6 × 5/9
C = 37
So, 98.6°F is exactly 37°C. This is considered the normal average body temperature for humans.