Wind Chill & Heat Index Calculator

Feels-like temperature — Canadian & NOAA formulas

Quick Answer

Wind Chill & Heat Index Calculator: Feels-like temperature — Canadian & NOAA formulas. Wind Chill & Heat Index Calculator uses standard science & engineering formulas to compute accurate results instantly.

Air temperature (°C)

Wind speed (km/h)

Feels like (wind chill)

-13.0°C

8.0°C colder than actual · Mild

Actual temp-5°C

Wind30 km/h

Temp drop8.0°C

Frostbite riskMild

Wind chill risk zone

Extreme

High

Moderate

Low

Feels like -13.0°C

Formula (Canada 2001)

1WCI = 13.12 + 0.6215T − 11.37V^0.16 + 0.3965·T·V^0.16
2T = -5°C，V = 30 km/h，V^0.16 = 1.723
3WCI = 13.12 + -3.11 − 19.59 + -3.42 = -13.0°C

Wind chill table (°C)

T \ Wind	10 km/h	20 km/h	30 km/h	40 km/h	60 km/h
0°C	-3	-5	-6	-7	-9
-5°C	-9	-12	-13	-14	-16
-10°C	-15	-18	-20	-21	-23
-15°C	-21	-24	-26	-27	-30
-20°C	-27	-30	-33	-34	-36
-30°C	-39	-43	-46	-48	-50

💡 Wind doesn't lower air temperature — it strips away the thin warm layer your body heats, making you LOSE heat faster. The formula (T≤10°C, wind≥4.8km/h) is calibrated for a walking person's face. Wet clothing multiplies heat loss 25× — stay dry first, then block wind.

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How to Use

Enter known quantities: fill values and confirm units in the Wind Chill & Heat Index Calculator.
Instant solution: unknowns solve live with the formula shown transparently.
Use constant/material tables: standard physical constants and material data are listed on this page.
Compare conditions: change inputs to compare scenarios.

Key Points

Wind Chill & Heat Index Calculator is a free online science & engineering tool — open and use, no sign-up.
All calculations run locally in your browser; your data never leaves the device.
Key capability: Feels-like temperature — Canadian & NOAA formulas.
Results come with formulas and reference tables so you can verify every number.

Formula & How It Works

Wind Chill & Heat Index Calculator formula

Wind Chill & Heat Index Calculator uses standard science & engineering formulas to compute accurate results instantly.

FAQ

How do I use the Wind Chill & Heat Index Calculator?

Open the page and fill in the input fields — results update automatically. Feels-like temperature — Canadian & NOAA formulas.

Are the results accurate?

Yes. Standard formulas and conversion factors are used and verified.

Is it free? Do I need to sign up?

Completely free. No registration, login or download required.

Does it work on mobile?

Yes. The responsive design works on phones, tablets and desktops.

Is my data saved?

No. Everything runs locally in your browser.

Related Guides

Source & Updates

Based on CODATA recommended constants and standard physics formulas. Last updated: 2025-07

Last updated: 2026-08-04

Formulas and content on this page are reviewed by the YiJianSuan team. For reference only — official sources prevail.

Cite this page: YiJianSuan. Wind Chill & Heat Index Calculator[EB/OL]. https://www.yijiansuan.com/en/c/science/wind-chill

Results provided by this tool are for reference only and do not constitute professional advice.