Home » Weather Calculators and Unit Conversions

Weather Calculators and Unit Conversions

Calculators ➡︎ These meteorological calculators will help you convert units and compute various parameters from observations.

Temperature from ºF to ºC or ºC to ºF

heatConvert Temperature from ºF to ºC or ºC to ºF
Enter a temperature (ºF or ºC), then click the corresponding “convert” button to see the result.
Fahrenheit (oF)
Celsius (oC)

heatTemperature Conversion
Enter a temperature in Fahrenheit then click “convert” to see the result.
Fahrenheit (oF)
Celsius (oC)
OR in Celsius
Celsius (oC)
Fahrenheit (oF)



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Calculate the windchill Index

windchillWindchill Calculation
Enter in the air temperature (Tair) in degrees Fahrenheit and wind speed in mph, then click on the Calculate WC to compute the windchill
Tair oFwind (mph)
OR use dew point temperature
Tair oCwind (mph)
heatWindchill Calculation (Fahrenheit and Celsius)
Enter in the air temperature (Tair) in degrees Fahrenheit and wind speed in mph, then click on the Calculate WC to compute the windchill
Temperature
ºF
Wind (mph)
mph
Windchill =
ºF
OR in Celsius
Temperature
ºC
Wind (mph)
mph
Windchill =
ºC


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Relative Humidity Calculator


heatRelative Humidity Calculator (from Dew Point)
Enter in the air temperature (Tair) and dew point temperature (Tdp) in degrees Fahrenheit (oF) or Celcius (oC, second row), then click "Calc RH" to compute the relative humidity (RH).

Tair oFTdp oF
Tair oCTdp oC

heatRelative Humidity Calculator
Enter in the air temperature (Tair) and dew point temperature (Tdp) in degrees Fahrenheit (oF).
Fahrenheit (oF)
Tdp oF
Relative Humidity
OR in Celsius
Celsius (oC)
Tdp oC
Relative Humidity


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Heat Index Calculator

heatHeat Index Calculation
Enter in the air temperature (Tair) in degrees Fahrenheit and relative humidity (RH) in percent (without the % sign), then click on the Calculate HI to compute the heat index (HI) | Use the heat index tables
TairRHHI=
OR use dew point temperature
TairTdpHI=
heatHeat Index Calculation
Enter in the air temperature (Tair) in degrees Fahrenheit and relative humidity (RH) in percent (without the % sign), then click on the Calculate HI to compute the heat index (HI) | Use the heat index tables
Temperature
ºF
Relative Humidity
%
Heat Index =
OR use dew point temperature
Temperature
ºF
Dew Point Temp
ºF
Heat Index =


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Convert Wind Speed Units


heatWind Speed Conversion
Input value here and then select units belowAnswers:
mphmph
knotsknots
m/sm/s
ft/sft/s
km/hkm/h


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Wet-Bulb Calculator

heatWet-Bulb Temperature from Dewpoint
Temp: Dewpoint: Pressure*:
Fahrenheit
Celsius
Kelvin
Fahrenheit
Celsius
Kelvin
in. of mercury
mm of mercury
mb (hPA)
*not altimeter setting
Conversion/Answers
Wet-bulb temperature: ºF  ºC  KRel Humidity:

%