Work out cold stress exposure limit instantly with clear inputs, formula shown and shareable results.
The wind chill index expresses the combined cooling effect of temperature and wind as an equivalent still air temperature, using the formula 13.12 + 0.6215T - 11.37V^0.16 + 0.3965T V^0.16 with temperature in Celsius and wind in kilometres per hour. Frostbite times are then read from the resulting index rather than from air temperature.
Wind chill
WCI = 13.12 + 0.6215 T - 11.37 V^0.16 + 0.3965 T V^0.16
Preliminary estimate only. Cold work scheduling, warming breaks and clothing must follow the applicable cold stress standard and a competent person's risk assessment.
WCI = 13.12 + 0.6215 T - 11.37 V^0.16 + 0.3965 T V^0.16. The wind chill index expresses the combined cooling effect of temperature and wind as an equivalent still air temperature, using the formula 13.12 + 0.6215T - 11.37V^0.16 + 0.3965T V^0.16 with temperature in Celsius and wind in kilometres per hour.
No. Wind chill only describes heat loss from exposed skin. Water pipes and equipment cool to the air temperature, not the wind chill value.
This calculator takes 2 inputs: Air temperature, Wind speed. The pre-filled defaults are a realistic worked example — replace them with your own site or project figures.