Meteorological Calculator
Temperature Conversion | Wind Speed | Wind Chill | Relative Humidity | Heat Index | Station Pressure

Temperature Conversion

Enter a number then click on the the conversion button.
Fahrenheit (o F)
Celsius (o C)

 

 

Wind Speed Calculations

Enter a speed into any blank to convert to all other wind speeds
mph   knots  m/sec   km/hr
    

Wind Chill Calculations

Enter the temperature in degrees Fahrenheit and wind speed in mph,
then click on the Calculate WC to compute the windchill index.
Temp
(o F)
Wind
mph

 

Relative Humidity Calculation

Enter the air temperature and the dew point in degrees Fahrenheit, then click on the Calculate RH to compute the relative humidity.
Temp DP

 

Heat Index Calculations

Enter the temperature in degrees Fahrenheit and relative humidity (RH) in percent (without the % sign), or the Dew Point (DP).  Then click on the Calculate HI to compute the heat index (HI).
Temp RH HI DP
or
Temp DP HI RH

 

Station Pressure Calculation

Current altimeter in inches?
(i.e. 29.92)
What is your station elevation? (ft)
i.e. St. Louis - Lambert= 710
The Station Pressure in inches is:
The Station Pressure in millibars is:
The Pressure Altitude in feet is: