Bicycle Software

PowerCalc

PowerCalc

Misc. Downloads

Wind Chill Calculator

ChillCalc is the Machinehead Software Wind Chill Calculator. In an ambient temperature of about 5 degrees centigrade, a wind speed of 22mph will make one feel much colder. It will feel like about -7 degrees. This program calculates wind chill equivalent temperatures using the Siple-Passel method ( J.C. Dixon and M.J.Prior, Wind-chill indices - a review, The Meteorological Magazine, No 1374, Jan 1987, vol 116). This is based on measurements of the time taken to freeze 250 gm of water in a 5.7cm diameter by 15 cm high plastic cylinder at various wind speeds and temperatures. The Siple-Passel equation was originally used to predict conditions likely to produce frostbite on military exercises:

This program is also supplied as a component of the PowerCalc cyclists power calculator

Below is a stand alone version for those who aren't interested in bicycling:
Download full install for the (16 bit)wind chill calculator 300KB
Alternatively if you have already installed any of my other 16 bit Windows software: Download program file only (5KB)