How to Calculate Wind Chill Calc
What is Wind Chill Calc?
Wind chill is the perceived decrease in temperature felt by exposed skin due to airflow. Wind increases the rate of heat loss by continuously replacing the layer of warm air near the skin with cooler ambient air. The Environment Canada / NWS formula (2001) uses wind speed and air temperature to calculate the apparent feels-like temperature. It applies when the actual temperature is ≤ 10°C and wind speed > 4.8 km/h.
Formula
- C
- 13 — 13
- WC
- 35 — 35
- V
- V value — Variable used in the calculation
Step-by-Step Guide
- 1Metric (°C, km/h): WC = 13.12 + 0.6215T − 11.37V^0.16 + 0.3965T×V^0.16
- 2Imperial (°F, mph): WC = 35.74 + 0.6215T − 35.75V^0.16 + 0.4275T×V^0.16
- 3V^0.16 is the key term — wind speed has diminishing returns
- 4Developed by Environment Canada and the US NWS in 2001
- 5Not applicable above 10°C/50°F — no cooling effect from wind when air is warm
Worked Examples
Frequently Asked Questions
What is Wind Chill Calc?
Wind chill is the perceived decrease in temperature felt by exposed skin due to airflow. Wind increases the rate of heat loss by continuously replacing the layer of warm air near the skin with cooler ambient air
How accurate is the Wind Chill Calc calculator?
The calculator uses the standard published formula for wind chill calc. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.
What units does the Wind Chill Calc calculator use?
This calculator works with inches, kilometres, miles per hour, kilometres per hour. You can enter values in the units shown — the calculator handles all conversions internally.
What formula does the Wind Chill Calc calculator use?
The core formula is: Metric (°C, km/h): WC = 13.12 + 0.6215T − 11.37V^0.16 + 0.3965T×V^0.16. Each step in the calculation is shown so you can verify the result manually.