Weather Conversion Calculators
These calculators were developed by the 28th Operational Weather Squadron
The calculators do not work in Netscape frames.
If using Netscape frames, right click and open frame in new window.
Distance Speed Pressure Weight Volume Wind Chill Cross/Tail Wind Temperature Humidity Heat Index H/T D-Val Press Alt Density Alt Lat / Long Conv ALSTG

Distance Conversion Calculator
Meters Inches Feet Yards Miles Nautical
Miles
 
Distance Speed Pressure Weight Volume Wind Chill Cross/Tail Wind Temperature Humidity Heat Index H/T D-Val Press Alt Density Alt Lat / Long Conv ALSTG

Speed Conversion Calculator
Meters per
Second		 Kilometer
per Hour		 Miles per
Hour		 Knots
 
Distance Speed Pressure Weight Volume Wind Chill Cross/Tail Wind Temperature Humidity Heat Index H/T D-Val Press Alt Density Alt Lat / Long Conv ALSTG

Pressure Conversion Calculator
Standard
Atmosphere		 Inches of
Mercury		 Millimeters
of Mercury		 Millibars
 
Distance Speed Pressure Weight Volume Wind Chill Cross/Tail Wind Temperature Humidity Heat Index H/T D-Val Press Alt Density Alt Lat / Long Conv ALSTG

Weight Conversion Calculator
Grams Kilograms Ounces Pounds Troy
Pounds
 
Distance Speed Pressure Weight Volume Wind Chill Cross/Tail Wind Temperature Humidity Heat Index H/T D-Val Press Alt Density Alt Lat / Long Conv ALSTG

Volume Conversion Calculator
Liters Fluid
Ounces		 Quarts Gallons Imperial
Gallons
 
Distance Speed Pressure Weight Volume Wind Chill Cross/Tail Wind Temperature Humidity Heat Index H/T D-Val Press Alt Density Alt Lat / Long Conv ALSTG

Wind Chill Calculator
Temperature (Fahrenheit)
Wind Speed (Knots)

Wind Chill
  

Wind Chill Chart
NOTE:
Speeds of 3 knots or less have little effect on the wind chill.
 

Distance Speed Pressure Weight Volume Wind Chill Cross/Tail Wind Temperature Humidity Heat Index H/T D-Val Press Alt Density Alt Lat / Long Conv ALSTG

Surface - Cross / Head / Tail Wind Calculator
Type in the following
information		 Runway
(i.e. 220)		 Wind Direction
(i.e. 270)		 Wind Speed
Knots

The Crosswind is
Knots		 The Head(+) / Tail(-) wind is
Knots

Flight Level - Cross / Head / Tail Wind Calculator
Type in the following
information		 Aircraft Heading
(i.e. 220)		 Wind Direction
(i.e. 270)		 Wind Speed
Knots

The Crosswind is
Knots		 The Head(+) / Tail(-) wind is
Knots
 

Distance Speed Pressure Weight Volume Wind Chill Cross/Tail Wind Temperature Humidity Heat Index H/T D-Val Press Alt Density Alt Lat / Long Conv ALSTG

Temperature Calculator
Enter the
Temperature
 
Distance Speed Pressure Weight Volume Wind Chill Cross/Tail Wind Temperature Humidity Heat Index H/T D-Val Press Alt Density Alt Lat / Long Conv ALSTG

Relative Humidity Calculator
Temp oF Dew Point oF %
Temp oC Dew Point oC %
Calculate Dew Point from Temp and Relative Humidity
Temp oF Rel Humidity % oF Dew Point
Depression		 oF


Relative Humidity / Dew Point Calculator
(using Dry Bulb-Wet Bulb Temperatures)

Enter a temperature, wet-bulb and station pressure
Dry-bulb Temperature:
°F °C °K		 Wet-bulb Temperature:
°F °C °K
Station Pressure (not the altimeter setting):
in of mercury mm of mercury millibars (hPA)
 RH
%		  Dewpoint
°F °C °K
 
Distance Speed Pressure Weight Volume Wind Chill Cross/Tail Wind Temperature Humidity Heat Index H/T D-Val Press Alt Density Alt Lat / Long Conv ALSTG

Heat Stress Index Calculator
Temp oF Relative Humidity Dew Point oF =
OR
Temp oF Dew Point oF Relative Humidity =

Fighter Index of Thermal Stress
Temp oF Dew Point oF
 
Distance Speed Pressure Weight Volume Wind Chill Cross/Tail Wind Temperature Humidity Heat Index H/T D-Val Press Alt Density Alt Lat / Long Conv ALSTG

Height and Temperature D-Val Calculator
Enter Forecast Altimeter Setting for Altitude Variation
(Remember to estimate high.)		 Ex.
29.92
Level Std Height Enter
Actual Height		 Std Temp Enter Actual
Temp (°C)		 Height (ft)
D-Val		 Temp (°C)
D-Val		 Altitude
Variation
1000 MB 364 ft / 111 m ft or m +14.2 oC
950 MB 1773 ft / 541 m ft or m +11.5 oC
925 MB 2498 ft / 762 m ft or m +10.0 oC
900 MB 3243 ft / 989 m ft or m +8.6 oC
850 MB 4781 ft / 1458 m ft or m +5.7 oC
800 MB 6394 ft / 1949 m ft or m +2.3 oC
750 MB 8091 ft / 2467 m ft or m -1.0 oC
700 MB 9882 ft / 3013 m ft or m -4.6 oC
600 MB 13801 ft / 4207 m ft or m -12.3 oC
500 MB 18289 ft / 5576 m ft or m -21.2 oC
400 MB 23574 ft / 7187 m ft or m -31.8 oC
300 MB 30065 ft / 9166 m ft or m -44.6 oC
250 MB 33999 ft / 10366 m ft or m -52.3 oC
200 MB 38662 ft / 11787 m ft or m -56.4 oC
150 MB 44647 ft / 13608 m ft or m -56.7 oC
100 MB 53083 ft / 16180 m ft or m -56.7 oC
70 MB 60504 ft / 18442 m ft or m -56.7 oC
50 MB 67507 ft / 20576 m ft or m -55.8 oC
30 MB 78244 ft / 23849 m ft or m -52.74 oC
Atmosphere
 
Distance Speed Pressure Weight Volume Wind Chill Cross/Tail Wind Temperature Humidity Heat Index H/T D-Val Press Alt Density Alt Lat / Long Conv ALSTG

Pressure Altitude Calculator
Enter Field Elevation (feet) or  
(Does not work in Netscape)
ALSTG .00 .01 .02 .03 .04 .05 .06 .07 .08 .09
29.40
29.50
29.60
29.70
29.80
29.90
30.00
30.10
30.20
30.30
30.40
30.50
 
Distance Speed Pressure Weight Volume Wind Chill Cross/Tail Wind Temperature Humidity Heat Index H/T D-Val Press Alt Density Alt Lat / Long Conv ALSTG

Density / Pressure Altitude Calculator
Enter the following information:
Temp (oF) Dew Point (oF) ALSTG (30.04) (in)
  or Stn Elev (Ft)
Density Alt = (ft) (m) Station Press
(mb)
Press Alt = (ft) (m) Virtual Temp
(oF)
 
Distance Speed Pressure Weight Volume Wind Chill Cross/Tail Wind Temperature Humidity Heat Index H/T D-Val Press Alt Density Alt Lat / Long Conv ALSTG

Lat / Long Converter
Enter the Lat Deg Min or Decimal (enter in 2 digits)
Enter the Long Deg Min or Decimal
Latitude Longitude
 
Distance Speed Pressure Weight Volume Wind Chill Cross/Tail Wind Temperature Humidity Heat Index H/T D-Val Press Alt Density Alt Lat / Long Conv ALSTG

Altimeter Setting
Enter the elevation of the station
   and choose your units:		 Enter your station pressure(not the altimeter setting)
    and choose your units:

feet meters
in of mercury mm of mercury millibars (hPA)
Altimeter Setting