Wind Chill Calculator

About Wind Chill Calculator

Wind chill shows how cold it feels with wind. Moving air accelerates heat loss from exposed skin.

How to use this calculator

1. Enter the air temperature.
2. Enter the wind speed.
3. Choose the correct units if the tool asks for them.
4. Click calculate to see the wind chill result.
5. Read the worked explanation to understand how the result was found.

The formula explained

• \(\text{Wind Chill}\) = the perceived temperature with wind
• \(T\) = air temperature
• \(V\) = wind speed

Step by step method

1. Start with the actual air temperature and the wind speed.
2. Use the wind chill formula to combine the temperature term and the wind speed term.
3. Compute the wind speed factor and apply it to the formula.
4. Compare the result with the original temperature to see how much colder it feels.

Worked example

Suppose the air temperature is 30 degrees Fahrenheit and the wind speed is 10 miles per hour.

1. Substitute the values into the formula: \(35.74 + 0.6215(30) - 35.75(10^{0.16}) + 0.4275(30)(10^{0.16})\).
2. Compute the parts: \(0.6215(30) = 18.645\) and \(10^{0.16} \approx 1.445\).
3. Finish the calculation: \(35.74 + 18.645 - 35.75(1.445) + 0.4275(30)(1.445) \approx 21.25\).

Tips and common mistakes

• Wind chill is based on cold air and wind, so it is not meant for calm conditions.
• Make sure the temperature and wind speed units match the calculator's formula or settings.
• Do not use this result as a direct substitute for actual air temperature.
• The formula is most useful when the temperature is at or below the range where wind chill is defined.

Frequently asked questions