Online Aviation Instrument Simulators + E6b, CR3 and other Flight Computer Calculators
Site Overview Interactive Simulators We offer several free, interactive applications to help you practice. These include a Pitot Static System Simulator, HSI, RMI, NDB, and VOR simulators. You can find them all in the Online Simulators section.
Aviation Calculation Tools This website is your go-to resource for aviation calculations. You'll find a wide variety of tools, including E6B and CR-3 flight computer calculations, and what we're confident is the best E6B emulator available online.
Before you begin, please take a moment to read and understand the disclaimer.
Navigation Simulator for PC Windows (Now Free)
Learn or teach the basics of instrument flying quickly and easily with our powerful simulator. It's designed specifically to avoid the complicated controls of other flight simulators, letting you focus on navigation. Use three simultaneous navaids plus an intersection to hone your skills.
The simulator features a full suite of common instruments, including:
Airspeed indicator, altimeter, and vertical speed indicator
Attitude indicator and turn coordinator
HSI, VOR, ADF, and RMI (with dual navaid tuning)
Heading indicator
DME (showing distance, speed, and ETA)
New! An online (browser) version of the Navigation Simulator is now available. It works in your browser and is nearly identical to the Windows PC version. This means you can use it on a Mac, Windows, or Linux computer. While the online version is great, the standalone PC version will provide the best user experience for Windows users.
For comprehensive video demonstrations, please visit the Presentations section.
Free Online Instrument Simulators
Modern browsers and computers make it possible to use sophisticated, web-based instrument simulators. You can now experience realistic scenarios, like seeing how icing affects the Pitot-static system or practicing a holding pattern in our VOR simulator.
To ensure the best experience for every user, we offer three versions of our VOR, HSI, RMI, and ADF simulators. They are designed to work with different screen sizes and computer speeds:
Version 1: A simple, lightweight view perfect for smaller screens. It shows you how the instrument display changes as the aircraft moves.
Version 2: A more interactive experience for standard monitors. It allows you to "fly" the aircraft and practice maneuvers like intercepting a radial.
Version 3: Our most advanced version. Designed for fast computers and large monitors, it provides a highly realistic simulation that shows how your navigation changes affect all six basic flight instruments simultaneously.
Online Compact Instrument Simulator (For Small Screens) This simulator combines many of the features of our online simulators in a convenient and compact format. It allows for three simultaneous Navaids and two simultaneous navigation instruments, such as the VOR, RMI, ADF, and HSI. And best of all, it is free online. To proceed directly to the page, click here.
Great News on Flash™ Emulation As you may know, Adobe® Flash™ Player reached End of Life when Adobe® stopped support after 31 December, 2020 and blocked its use after 12 January, 2021. Flash apps and images on this site, which were originally developed for displaying in the Adobe® Flash™ Player, can no longer be viewed using the Flash™ plug-in that was installed in browsers. We are pleased to have found that it is possible to open the site's Flash content using Ruffle, a Flash™ Player emulator. According to Ruffle developers:
"Leveraging the safety of the modern browser sandbox and the memory safety guarantees of Rust, we can confidently avoid all the security pitfalls that Flash had a reputation for."
Implementation of Ruffle is done at our server and there is no need for you to do anything.
Browser Requirements Your browser must have JavaScript enabled in order for the web site to work properly. Mouse and keyboard are required on some parts. A broadband connection is highly recommended for on-line access of this site.
Aviation Calculations In this section you will find flight computer calculations including the ones performed by an E6B or CR-3 circular computer. It is divided into five sections: Altimetry for calculating true altitude, pressure altitude, density altitude, true airspeed, Mach number, and several other related calculations.
Wind and Time - Speed - Distance (TSD) for magnetic course, true course, ground speed, wind, crosswind components, time en route, fuel, and many others. Weight & Balance for calculating longitudinal and lateral weight and balance, center of gravity (CG), ballast, and more. Radius of action calculations also known as Point of Safe Return (PSR) calculations for moving target intercept, calculations related to flying and returning to the same base, flying and returning to an alternate base, flying and returning to a moving base, and Radius of Action Returning to Moving Alternate Base. Miscellaneous covers climb and descent gradients, standard rate, load factor, and any other not covered in the previous sections.
Pitot Static System Simulator Explore our interactive pitot-static system simulator, a comprehensive tool for understanding how flight instruments work. This page features a detailed diagram where you can change the aircraft's altitude and speed to observe real-time reactions on the airspeed indicator, altimeter, and vertical speed indicator. To learn about common failure modes, you can simulate ice or debris blockages in the pitot-tube and static ports, comparing the erroneous instrument readings against an unaffected reference system side-by-side. The simulator also allows for custom altimeter settings and non-standard temperatures, providing a dynamic and practical learning experience.
Standard Atmosphere Explore the fundamental properties of our atmosphere with our comprehensive calculator based on the U.S. Standard Atmosphere, 1976. This model is the official U.S. implementation of the International Standard Atmosphere (ISA) and remains the cornerstone for modern aircraft design and instrument calibration.
What makes our calculator uniquely powerful is its bidirectional flexibility. Unlike typical tools where you can only input altitude, here you can enter a known value for any of the 28 atmospheric properties—from temperature to density or pressure—and it will instantly solve for all the others. This dynamic capability means our single calculator performs the work of 378 different function combinations, making it an exceptionally versatile tool for engineers, pilots, and students.
12 and 24 hour Aviation Style
Flash
Clocks
for Your Web Site As part of "Webmaster Tools" this flash-based applet is available for your site. Customizable styles and layouts allow for hundreds of combinations. You will need to install a Flash emulator such as Ruffle. Click here to learn more.
For a comprehensive list of all functions please refer to the Site Map.
If you find this site helpful please feel free to link it to your website or tell your friends and colleagues about it. Your support is greatly appreciated! This site was inaugurated on November 02, 2005.
For questions, comments or corrections please feel free to email:
Free Online Simulators
No installation required. These simulators are ready to run on your web browser and have a rich set of features. Practice basic VOR, ADF, RMI and HSI intrument orientation and execute holding patterns. Other simulators include pitot static system and altimeter errors. Click here to go to main online simulator page.
Navigation Simulator
Practice in our simulator specifically designed for learning the basics of instrument navigation. Try the Navigation Simulator, available for Windows PC. Now completely free. There is also an online version that runs directly on this website, and can be viewed on a Windows PC, Mac, or Linux OS.
By Luiz Roberto Monteiro de Oliveira. Screenshots and video captures allowed (personal, business or military)
as long as credited to author and link to this site or URL included. Permission required for all other uses.
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circular computer. It is divided into five sections:
Explore the fundamental properties of our atmosphere with our comprehensive 
