Weather
Wind Chill Calculator
Estimate how cold it actually feels by combining air temperature with wind speed in mph or km/h—essential for winter running, hiking, or job-site planning.
Factor wind speed into cold air readings to estimate frostbite risks.
Wind chill equation
Wind chill (°F) = 35.74 + 0.6215T − 35.75V^0.16 + 0.4275T·V^0.16 (valid when T ≤ 50°F and V ≥ 3 mph).
Inputs are Fahrenheit (automatically converted from °C if needed) and wind speed in mph (converted from km/h).
How to use
- Enter air temperature in °F or °C.
- Provide wind speed in mph or km/h (must be ≥ 3 mph for the formula to apply).
- Read the feels-like value plus cold-risk guidance such as "frostbite in 30 minutes."
Example
Input: Temperature = 20°F, Wind = 15 mph
Output: Wind chill ≈ 6°F (−14°C) with frostbite risk inside 30 minutes
Student-friendly breakdown
This walkthrough emphasizes the most searched ideas for Wind Chill Calculator: wind chill calculator, wind chill chart, feels like temperature cold, wind chill calculator celsius. Start with the formula above, then follow the guided steps to double-check your work. For quick revision, highlight the givens, plug into the equation, and finish by verifying your units.
Need more support? Use the links below to open the long-form guide, browse additional examples, or hop into adjacent calculators within the same topic — each one is a quick way to double-check your work or handle a related question without starting from scratch.
Deep dive & study plan
Wind Chill Calculator: Calculates wind chill and frostbite guidance from temperature plus wind speed. It's built around wind chill, feels like cold, frostbite, so you can go from a raw question to a checked answer without switching tools.
The math behind it: Inputs are Fahrenheit (automatically converted from °C if needed) and wind speed in mph (converted from km/h). The core relationship is Wind chill (°F) = 35.74 + 0.6215T − 35.75V^0.16 + 0.4275T·V^0.16 (valid when T ≤ 50°F and V ≥ 3 mph)., shown above the calculator so you can see exactly how your inputs turn into the result.
To use it well: (1) Enter air temperature in °F or °C. (2) Provide wind speed in mph or km/h (must be ≥ 3 mph for the formula to apply). (3) Read the feels-like value plus cold-risk guidance such as "frostbite in 30 minutes." Keep your units consistent as you go, and re-run a case you already know the answer to — it's the fastest way to catch a typo before it throws off a result you're relying on.
Worked example: entering Temperature = 20°F, Wind = 15 mph returns Wind chill ≈ 6°F (−14°C) with frostbite risk inside 30 minutes. Try swapping in your own numbers next, especially a case you're unsure about, before you use this for something that matters.
Quick retention checklist
- Speak the formula aloud (or annotate it) so the relationships stick.
- Write each step in your own words and compare with the numbered list above.
- Swap in new numbers for the Example to make sure the calculator (and your logic) handles edge cases.
- Check at least one related calculator below — it's the fastest way to confirm your numbers still line up from a different angle.
FAQ & notes
Why does the calculator stop changing above 50°F?
The official wind chill formula is only defined for air temperatures up to 50°F (10°C). Above that, convection has little effect so it simply reports the air temperature.
Does humidity factor in?
Wind chill only considers wind speed and air temperature. Use the heat index calculator when humidity drives discomfort instead.
What formula does the Wind Chill Calculator use?
Inputs are Fahrenheit (automatically converted from °C if needed) and wind speed in mph (converted from km/h).
How do I use the Wind Chill Calculator?
Enter air temperature in °F or °C. Provide wind speed in mph or km/h (must be ≥ 3 mph for the formula to apply). Read the feels-like value plus cold-risk guidance such as "frostbite in 30 minutes."