Wind Chill Calculator

NWS 2001 wind-chill formula with frostbite-time guidance.

Calculator Numbers & Math Updated Apr 20, 2026
How to Use
  1. Enter air temperature and wind speed.
  2. Valid for T ≤ 50°F and wind ≥ 3 mph.
Input
Presets
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Show Work

Enter values to see the step-by-step calculation.

Formula

NWS 2001
WC = 35.74 + 0.6215·T − 35.75·V^0.16 + 0.4275·T·V^0.16 (T°F, V mph)
Frostbite
WC ≤ 0°F → 30 min · ≤ −19°F → 10 min · ≤ −35°F → 5 min

About the Wind Chill Calculator

Need a hand with everyday maths and number work? The Wind Chill Calculator does the work for you — free, and right here in your browser. NWS 2001 wind-chill formula with frostbite-time guidance.

How it works

Type your numbers into the boxes. The answer shows up right away — you do not have to press a button. If you change a number, the answer changes too. So you can try different numbers and watch what happens, or check an answer you worked out yourself. Just make sure each box has the right kind of number in it.

Want the deeper story? The Knowledge Base explains the ideas behind the tools in more detail.

Frequently Asked Questions

How do I use the Wind Chill Calculator?

Simply type your numbers and read the result, which refreshes the instant you change something. There is nothing to submit and nothing to wait for.

Is it free? Does it work without internet?

Yes to both. It is free with no sign-up, and once the page has loaded it keeps working even with no internet.

Where does my data go?

Nowhere — every calculation runs on your own device. Nothing you enter is uploaded, logged, or stored.

Common Use Cases

Get an answer fast

Type what you have and get the answer in seconds — on a phone, tablet, or computer.

Try different numbers

Change one thing and watch the answer change. It is an easy way to compare your choices.

Nothing to set up

Open the page and start. There is nothing to install, and no account to make.

Safe and private

Everything you type stays on your device. Nothing is sent to a server or saved.

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