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Instrument Simulator
(Windows and Mac OS X now available!)
This simulator has been designed to help those who want to quickly learn the basics of instrument flying. The user does not need to deal with complicated and cumbersome flight controls or simulators that are designed for specific aircraft types. Use three simultaneous navaids plus an intersection. All of the most common navigation and basic instruments including airspeed indicator, attitude indicator, altimeter, turn coordinator, HSI, VOR, vertical speed indicator, RMI (capable of tuning two simultaneous navaids), heading indicator, ADF, and DME (with distance, speed and ETA). more

Site Overview
This web site is your source for aviation calculations. All E6B, CR-3 and other flight computer calculations are featured. We are confident that you will find this site to have the best E6B emulator you will ever encounter on the web. Although this site should not be used for actual flight planning, it is a great learning tool.

Also available are several Flash based interactive applications, including a Pitot Static System Simulator, HSI, RMI, NDB, and VOR simulators. You may find these in the Online Simulators section.

Before you begin to use this web site, please read and understand the disclaimer.

Online Instrument Simulators
As browsers and computers are getting more sophisticated it's now possible to have very complete web-based instrument simulators. You can see for example how the Pitot static system is affected by icing, or you can try flying a holding pattern in our VOR simulator. Some simulators offer different versions that can be chosen according to your computer's screen size and processing power. For the VOR, HSI, RMI, and ADF simulators there are three versions. Version 1 works well if you have a smaller screen like 800 x 600 pixels and just want to show what happens to the instrument display when the aircraft position changes in relation to a navaid. If your monitor is 1024 x 768 pixels, version 2 allows you actually “fly” the aircraft. For example, you can intercept a radial or perform a course reversal maneuver. Version 3 allows someone with a faster computer and with a monitor with 1280 x 1024 pixels or more to simulate very realistic navigation. In addition to seeing navigation instrument variables, you also can see interdependent changes in the 6 basic instruments.

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Most Popular Sections
 Online VOR Simulator
      Version 1 (800 x 600 screen size or greater)
      Version 2 (1024 x 768 screen size or greater)
      Version 3 (1280 x 1024 screen size or greater)
 Online RMI Simulator
      Version 1 (800 x 600 screen size or greater)
      Version 2 (1024 x 768 screen size or greater)
      Version 3 (1280 x 1024 screen size or greater)
 Online Pitot Static Simulator  Calculate True Airspeed  Calculate True Altitude  Wind Triangle  Weight & Balance Sheet  Mach Number  Online Conversions

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.

Online Conversions
Quickly convert weight & force, distance & length, temperature, time, speed, pressure & load, volume, area, mass, power, energy & work, flow (volume), flow (mass), angle, and acceleration. This page is designed so that you can type any one unit that you like and instantly have that converted to all of the other units.

Standard Atmosphere
Aviation instruments and aerodynamic calculations many times reference a mathematical model of the Earth's atmosphere.1976 Standard Atmosphere serves as a model to standardize and make such calculations practical since the real atmosphere is too variable and unpredictable. This site provides all 28 functions / properties up to 86 km as outlined by the standard, including the inverse of all those functions (the equivalent of 378 function combinations). In addition a visual representation of all functions is also available in the Standard Atmosphere graphs section.

Browser Requirements
Your browser must have JavaScript enabled in order for the web site to work properly. Some sections may require the latest Adobe (formerly Macromedia) Flash plug in. A broadband connection is highly recommended for on-line access of this site. On dial-up connections the pages may take several minutes to load due to their size and complexity (you may consider downloading the offline version (works only with Internet Explorer) which features all the simulators and calculators of the site and requires a one time download of around 12 MB). If you are not using a browser such as Opera 8, or 9+, Firefox 1, 2, or 3+, Safari 4+ (prevoius versions of Safari have known issues with our calculators), Netscape 8, 9, or 10+, Google Chrome 1+, or Internet Explorer 6, 7, or 8+, you may be unable to correctly view all of the information and materials contained in this site.

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