Runner's Web

Meteorlogical Calculators

Temperature Conversion | Windchill | Relative Humidity | Heat Index

Temperature Conversion

Enter a number then click on the appropriate number to see the result.

Fahrenheit ( o F )
Celsius ( o C )

Windchill Calculation

Enter in the air temperature ( Tair ) in degrees Fahrenheit and wind speed in mile per hour ( mph ), then click on the Calculate WC to compute the windchill ( WC ).
Tairo F mph

Enter in the air temperature ( Tair ) in degrees Celsius and wind speed in miles per hour, then click on the Calculate WC to compute the windchill ( WC ).
Tair o C mph

For more information about windchill (ie. equation) click here.

Relative Humidity Calculation

Enter in the air temperature ( Tair ) and dew point temperature ( Tdp) in degrees Fahrenheit ( oF ) then click on the Calculate RH to compute the relative humidity ( RH ).
Tair ( o F ) Tdp ( o F ) RH
Tair
Tdp


Enter in the air temperature ( Tair ) and dew point temperature ( Tdp) in degrees Celsius ( oF ) then click on the Calculate RH to compute the relative humidity ( RH ).
Tair ( o C ) Tdp ( o C ) RH
Tair
Tdp
For the relative humidity equation, go here

Heat Index Calculation

Valid entries are, air temperatures greater than 80 F ( 27 C ), dew point temperatures greater than 65 F ( 12 C ), and relative humidities higher than 40 percent.

in Celsius

Enter in the air temperature ( Tair ) and the dew point temperature ( Tdp ) in degrees Celsius, then click on the Calculate HI to compute the heat index ( HI ).

Tair in C Tdp in C RH =

in Fahrenheit

Enter in the air temperature ( Tair ) the dew point temperature ( Tdp ) in degrees Fahrenheit, then click on the Calculate HI to compute the heat index ( HI ).

Tair in F Tdp in F RH =

in Celsius

Enter in the air temperature ( Tair ) in degrees Celsius and relative humidity ( RH ) in percent ( without the % sign ), then click on the Calculate HI to compute the heat index ( HI ).

Tair in C RH Tdp =

in Fahrenheit

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 ).

Tair in F RH Tdp =

For more information about heat index (ie. equation) click here.
Scripts are by Ron Murphy. Updated 12.26.2000

Top of Page