I've never related anything useful to "wind chill" calculations.

When judging conditions I want to know a given set of parameters. Two of the most important ones are temperature and wind speed. Lumping those two together into a single digit is not helpful for me - I want to hear them BOTH.

The "Wind chill" number - I just filter that bit out. Not helpful for me, and I'm not interested.

The wind chill table has some merits for pedagogic purposes. Some people need sciency-sounding arguments to realize they actually have to dress for conditions and respect the effect of the wind on conditions.

Proper clothing is never more important than when it is blowing hard at low temperatures. You should also realize that any action becomes ten times harder because a) you really don't want to remove your mittens, and b) if you have to remove them you have to be extremely careful not to loose them. Routines such as ALWAYS tucking your mittens FIRMLY in your pocket suddenly becomes extremely important. Loose a mitten and loose a hand. Items such as face masks, googles and a hood that fits are suddenly important.

There are other factors as well. At about force 7 on Beaufort scale in winter you become virtually dumb, deaf, mute and blind. High winds and powdery snow means very limited visibility. The noise of the wind (with your ears inside your hood and balaclava) means that communication is limited - you put your mates ear 3 inches from your mouth and shout all you can, and maybe he'll understand.

But - with proper clothing and good field routines you can function and operate quite well. But your margin for error is very small.

That's the kind of factors I want to know about. The "chill" part is the easy part - you just dress properly.