What percent of body heat escapes from you head?

Answer 1

Here's what I found on a website "Depending on which website you believe it is anywhere between 20% and 90%.

However it appears that the big difference is accounted for by the prevailing circumstances.

Conduction and convection about 25%

Radiation about 43%

Evaporation and moisture about 30%

Exhaled air about 2%

Evaporation prevails at high ambient temperatures. Conduction and convection prevail at low ambient temperatures."

The generally accepted overall amount of heat loss through an uncovered head is about 40%, which is substantial. Wearing a hat can make a big difference in how cold you get overall, and how fast you get cold.