DA Calculator - Density Altitude Calculator Sumerduck Dragway


Fredericksburg, VA


This calculator will calculate the Density Altitude (DA) from the given weather conditions for your drag racing runs.

You can enter in the data manually if you have it ready, or you can choose the track and date of the drag racing
run and we will look up the weather and elevation data for you. Weather data is obtained from an airport near the track.

If you want the most accurate DA, check out this Kestrel 4250 racing weather meter, it gives you your DA instantly at the track.

Track:

Date:

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Click on the time to select your run conditions and calcuate your DA:
Time Temperature Humidity Pressure
11/28/2022 00:00:00 50.62 F 90 % 29.58 in
11/28/2022 01:00:00 50.14 F 89 % 29.58 in
11/28/2022 02:00:00 49.26 F 88 % 29.6 in
11/28/2022 03:00:00 48.91 F 87 % 29.62 in
11/28/2022 04:00:00 48.24 F 88 % 29.64 in
11/28/2022 05:00:00 46.99 F 88 % 29.65 in
11/28/2022 06:00:00 46.04 F 88 % 29.67 in
11/28/2022 07:00:00 47.29 F 86 % 29.7 in
11/28/2022 08:00:00 49.98 F 82 % 29.75 in
11/28/2022 09:00:00 51.39 F 71 % 29.8 in
11/28/2022 10:00:00 52.17 F 67 % 29.84 in
11/28/2022 11:00:00 52.83 F 62 % 29.85 in
11/28/2022 12:00:00 53.59 F 58 % 29.86 in
11/28/2022 13:00:00 55.1 F 55 % 29.85 in
11/28/2022 14:00:00 54.67 F 55 % 29.88 in
11/28/2022 15:00:00 53.27 F 58 % 29.9 in
11/28/2022 16:00:00 52.94 F 59 % 29.93 in
11/28/2022 17:00:00 50.73 F 63 % 29.96 in
11/28/2022 18:00:00 48.41 F 67 % 29.99 in
11/28/2022 19:00:00 47.17 F 69 % 30.02 in
11/28/2022 20:00:00 45.6 F 71 % 30.06 in
11/28/2022 21:00:00 44.23 F 74 % 30.09 in
11/28/2022 22:00:00 42.45 F 77 % 30.11 in
11/28/2022 23:00:00 40.73 F 80 % 30.12 in

Track Elevation:

feet above sea level

Air Temperature:

degrees F

Barometric Pressure:

inches Hg

Relative Humidty:

%


Density Altitude: -1023 feet
Relative Density: 103.03 %

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Correct your ET and MPH using the DA (Beta Testing)

Density Altitude:

feet above sea level

1/4 mile ET:

seconds

1/4 mile trap speed:

MPH

Stock and Mildly Modified Naturally Aspirated Engines
@ MPH

Extensively Modified Naturally Aspirated Engines
@ MPH

Extensively Modified Supercharged and Turbocharged Engines
@ MPH

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