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Wind Chill Calculator

Use this wind chill calculator to review an educational health calculation for wind chill.

Primary answer
Wind chill
Inputs to verify
Air temperature, Temperature unit, and Wind speed
Use type
Use as an estimate that depends on assumptions.
Keyword intent
wind chill calculator

Calculator

Wind Chill Calculator

Calculates wind chill from air temperature, temperature unit, wind speed. Defaults are filled in so you can review a working example before changing inputs.

selected

Enter the air temperature; it must convert to 50 F or colder for the NWS wind chill formula.

Choose Fahrenheit or Celsius for the air temperature input.

selected

Enter wind speed; it must convert to more than 3 mph for the NWS wind chill formula.

Choose miles per hour, kilometers per hour, meters per second, or knots.

Result

Result reflects the current submitted inputs.

  • Risk B
  • Reviewed 2026-05-26
  • 3 sources
Wind chill-19 F
Wind chill-28.6 C
Air temperature used0 F
Wind speed used15 mph
Formula statusNWS formula applied

Breakdown

Air temperature used
0 F
Wind speed used
15 mph
Formula status
NWS formula applied
  • The NOAA/NWS wind chill formula is defined only for air temperatures at or below 50 F and wind speeds above 3 mph.
  • Temperature inputs are converted to Fahrenheit before calculation.
  • Wind speed inputs are converted to miles per hour before calculation.
  • The formula assumes wind at face height, a human face model, dry cold conditions, and no warming impact from sunshine.
  • Wind chill applies to people and animals, not inanimate objects cooling below actual air temperature.
  • Results are safety estimates only and are not medical, occupational safety, or local weather warning advice.
  • Intermediate values are not rounded; raw outputs are rounded to 10 decimal places for stability.

Accuracy notes

Risk level
B
Reviewed
2026-05-26
Sources
3
Primary result
Wind chill

Formula logic is kept in a pure calculator module with fixtures, source notes, and page-visible assumptions.

Categories

What the result means

Use Wind chill as the headline answer for wind chill. NOAA/NWS wind chill apparent temperature in Fahrenheit. Treat the result as educational context, then read the limitations and assumptions before discussing it with a professional. Use air temperature used, wind speed used, and formula status to explain why wind chill moved when an input changed. Record the inputs you used and verify any health concern with a qualified professional.

Wind chillNOAA/NWS wind chill apparent temperature in Fahrenheit.
Wind chillWind chill apparent temperature converted to Celsius.
Air temperature usedAir temperature normalized to Fahrenheit before calculation.
Wind speed usedWind speed normalized to miles per hour before calculation.

Use the result this way

  1. Start with Wind chill, then use supporting outputs only to explain the primary answer.
  2. Verify air temperature, temperature unit, and wind speed before copying the result.
  3. Choose the mode or method first because it can change which formula is applied, keep units consistent with the labels shown in the form, and stay within the documented minimum and maximum ranges.
  4. Record the inputs you used and verify any health concern with a qualified professional.

User job

How to use this calculator

Use Wind Chill Calculator when you need wind chill, then use wind chill and air temperature used to check the context for general wellness education and preparing for a professional conversation.

Best for

  • Understanding a formula-based estimate
  • Seeing which inputs drive a health-related output
  • Reviewing a default example before entering your own air temperature and temperature unit.

Check before relying

  • Health formulas can be population-specific; do not use the result as diagnosis or treatment advice.
  • The NOAA/NWS wind chill formula is defined only for air temperatures at or below 50 F and wind speeds above 3 mph.
  • Temperature inputs are converted to Fahrenheit before calculation.
  • Source context: National Weather Service / NOAA, reviewed 2026-05-26.

Next useful step

  • Dew Point CalculatorUse next when you need dew point from air temperature and temperature unit after checking wind chill.
  • Heat Index CalculatorUse next when you need heat index from air temperature and temperature unit after checking wind chill.
  • One Rep Max CalculatorUse next when you need estimated 1RM from weight lifted and weight unit after checking wind chill.

Formula

NOAA/NWS wind chill (F) = 35.74 + 0.6215T - 35.75(V^0.16) + 0.4275T(V^0.16), where T is air temperature in F and V is wind speed in mph. Key assumptions: The NOAA/NWS wind chill formula is defined only for air temperatures at or below 50 F and wind speeds above 3 mph. Temperature inputs are converted to Fahrenheit before calculation. Wind speed inputs are converted to miles per hour before calculation.

  • NOAA/NWS wind chill (F) = 35.74 + 0.6215T - 35.75(V^0.16) + 0.4275T(V^0.16), where T is air temperature in F and V is wind speed in mph.
  • The NOAA/NWS wind chill formula is defined only for air temperatures at or below 50 F and wind speeds above 3 mph.
  • Temperature inputs are converted to Fahrenheit before calculation.
  • Primary source context: National Weather Service / NOAA.

Inputs

Enter air temperature, temperature unit, wind speed, and wind speed unit for general wellness education and preparation for a professional conversation. Before calculating, choose the mode or method first because it can change which formula is applied, keep units consistent with the labels shown in the form, and stay within the documented minimum and maximum ranges. Air temperature: Enter the air temperature; it must convert to 50 F or colder for the NWS wind chill formula. Temperature unit: Choose Fahrenheit or Celsius for the air temperature input. Wind speed: Enter wind speed; it must convert to more than 3 mph for the NWS wind chill formula.

Air temperatureEnter the air temperature; it must convert to 50 F or colder for the NWS wind chill formula.
Temperature unitChoose Fahrenheit or Celsius for the air temperature input.
Wind speedEnter wind speed; it must convert to more than 3 mph for the NWS wind chill formula.
Wind speed unitChoose miles per hour, kilometers per hour, meters per second, or knots.

Example

Using the default inputs, Wind Chill Calculator returns wind chill of -19. Adjust air temperature, temperature unit, wind speed, and wind speed unit to match your own scenario.

FAQ

How is wind chill calculated here?

NOAA/NWS wind chill (F) = 35.74 + 0.6215T - 35.75(V^0.16) + 0.4275T(V^0.16), where T is air temperature in F and V is wind speed in mph. The first assumption to check is: The NOAA/NWS wind chill formula is defined only for air temperatures at or below 50 F and wind speeds above 3 mph.

What does Wind chill mean for wind chill?

Treat the result as educational context, then read the limitations and assumptions before discussing it with a professional. Secondary values such as air temperature used, wind speed used, and formula status are there to explain the primary answer, not to replace it.

What should I enter for Air temperature?

Enter the air temperature; it must convert to 50 F or colder for the NWS wind chill formula. Use selected for this field. Choose the mode or method first because it can change which formula is applied, keep units consistent with the labels shown in the form, and stay within the documented minimum and maximum ranges.

How does Temperature unit change wind chill?

Choose Fahrenheit or Celsius for the air temperature input. Changing it can alter wind chill because the formula uses the submitted inputs together. Also compare measurement method, formula population, age range, units, sex or activity assumptions, and clinical context.

Why does the wind chill example show -19 for wind chill?

The default inputs produce -19 for wind chill. Treat that as a format and scale check, then replace every default value with your own inputs.

Can the wind chill result diagnose or prescribe anything?

No. Use it as educational context only. Health formulas can depend on population, measurement method, age range, and clinical context.

Sources

Last reviewed: 2026-05-26

  • Reviewed 2026-05-26
    Understanding Wind ChillNational Weather Service / NOAA. Formula coefficients, requirement that temperature is at or below 50 F and wind speed is above 3 mph, no-sun assumption, and official example that 0 F with 15 mph wind is about -19 F.
    Scope
    Official NWS wind chill formula, valid range, assumptions, and public safety explanation.
    Supports
    Formula coefficients, requirement that temperature is at or below 50 F and wind speed is above 3 mph, no-sun assumption, and official example that 0 F with 15 mph wind is about -19 F.
  • Reviewed 2026-05-26
    Wind ChillNational Weather Service / NOAA. Requirement to convert temperature to Fahrenheit and wind speed to miles per hour before applying the formula.
    Scope
    NWS weather calculator formula sheet for wind chill.
    Supports
    Requirement to convert temperature to Fahrenheit and wind speed to miles per hour before applying the formula.
  • Reviewed 2026-05-26
    NIST Guide to the SI, Appendix B.8: Factors for Units Listed AlphabeticallyNational Institute of Standards and Technology. Wind speed unit conversion constants used to normalize mph, km/h, m/s, and knots before formula application.
    Scope
    Unit conversion factors for customary and SI units.
    Supports
    Wind speed unit conversion constants used to normalize mph, km/h, m/s, and knots before formula application.

Disclaimer

This health calculator is for educational estimates only. It does not diagnose, treat, or replace advice from a qualified health professional.