COMMENTS FROM THE AUTHOR:
The following is a JavaScript Exercise and though it has been tested no guarantees regarding the accuracy of the calculations are made.

Calculating Wind Chill Factor

Metric - OLD

ENTER THE COEFFICENTS IN APPROPRIATE BOXES   
Temperature (°C) Wind Speed (km/hr) Wind Chill (°C)

Metric - NEW!

Based on USA National Weather Service NEW Wind Chill Temperature formula that was implemented in 2001
ENTER THE COEFFICENTS IN APPROPRIATE BOXES   
Temperature (°C) Wind Speed (km/hr) Wind Chill (°C)

Please Note: The calculator should not be used for outside air temperatures greater that 10 °C (50 °F ) and wind speeds less than 6.5 Km/hr (4 MPH).