Air Density Online

weather calculations for racing engine tuning


Jet your car from anywhere with an internet connection. Have a smartphone? You now have a portable jetting calculator.

for tracks

Real-time density altitude from current weather data at various tracks including: NHRA & IHRA dragstrips, road courses, dirt ovals.


Get your MFI fuel system setup programmed into ProCalc. Even get your dyno data added. You get 1 year of access to ProCalc too!

December 11, 2019

Announcing: Race Track List

In an effort to provide easily accessible information to racers, we've created a new website to provide race track information. Our new site will list tracks along with location information and track updates. We're still working out the kinks but it's just about ready for previewing.

Visit: Race Track List

We are still adding tracks on this site too. Get weather including air density and density altitude at over 700 tracks worldwide. Here are the most recent tracks we've added.






December 1, 2019

It’s getting cold

During the slow winter months we are working on many additions to the site and adding as many tracks as possible. We are especially interested in adding international tracks. If there are any tracks you're aware of, let us know. We are adding any type of motorsports track anywhere in the world.

Here are a few of the tracks we've added in the last couple of days.

November 28, 2019

Happy Thanksgiving in the US

Happy Thanksgiving to everyone in the US. We are so thankful for everyone we've worked with this year and everyone who visits our site. We hope you enjoy your day.

For those not in the US, we are busy adding tracks and updating the site. We are adding all sorts of motorsports locations including lakes where boat racing takes place. Here are a few of the tracks we've added recently.

If we don't have your track on our site, let us know and we'll add it.

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