Drag Racing Tech - Density Altitude(DA)?

How do you calculate for DA?

Thanks
Ever

The link below will do it for you.
http://wahiduddin.net/calc/calc_da.htm

This link will provide you with the weather conditions by zip code. Just input your zip.
http://www.weatherunderground.com/cgi-bin/findweather/getForecast?query=36117

You will also need to get the elevation of the track you run at.

John

I just found out that the DA for the day I ran was 6500ft. I ran a 13.4@107mph before the H/C. Do I use the altitude correction factors for DA or actual elevation? Which is 4500ft.

Thanks
Ever

you would use your DA to figure the correction if you are trying to see what your car runs at sea level. This page will save a couple steps if you know the weather/track elevation:

http://www.modulardepot.com/density.php

So my 13.4@107mph run corrected is a 12.2@116mph. Nice!

Thanks
Ever