104 °F to °C

104 °F = 40 °C

104 degrees Fahrenheit is 40 °C. In Kelvin that is 313.15 K. At or above 38 °C, which the NHS and Mayo Clinic describe as a fever in adults. As air temperature, this is a dangerous heatwave.

The working

°C = (°F − 32) × 5/9

  1. 104 − 32 = 72
  2. 72 × 5/9 = 40

Convert a different value

°F
°C
K
°R