Today I was taking care of a kid and he asked me about this. As in, he said both human and light bulbs give off heat, and his teacher said a 100 watt bulb gives off more heat than a 75 watt bulb and that gives off more heat than a 40 watt bulb and so forth.

So he wanted to know what wattage light bulb gives off as much heat as your average human?

Anyone have an idea of how to go about estimating this? Short of sticking a human in an insulated box and measuring.