Read this before using any result from this site for real-world planning.
FlightPerformanceCalc.com is a free, independent educational resource. It is not an official tool of any regulatory authority, aircraft manufacturer, or military organization. All results — including every density altitude figure — are estimates for planning awareness and training purposes only. Always verify performance data with your official AFM, POH, Dash-1, or applicable technical manual, and with an official weather briefing, before any flight.
Performance calculations are based on generalized models derived from published aviation principles and standard atmosphere (ICAO) formulas. They do not account for aircraft-specific limitations, aging, maintenance status, or non-standard configurations. FlightPerformanceCalc.com makes no guarantee that results are accurate for any specific aircraft.
Results from this calculator should not be used for official flight planning, weight and balance computations, or operational decisions. All official flight planning must be conducted using approved data from the applicable aircraft flight manual and in accordance with applicable regulations.
FlightPerformanceCalc.com does not sell or share personal information. The only third-party data processing is through Google AdSense advertising. California residents may opt out of personalized advertising at Google Ads Settings or by enabling the Global Privacy Control (GPC) signal in your browser.
FlightPerformanceCalc.com does not directly collect, store, or process personal data of EU or UK residents. Google AdSense may serve personalized ads based on cookies. You may opt out via Your Online Choices or Google Ads Settings.
FlightPerformanceCalc.com displays advertisements served by Google AdSense. All advertisements are clearly labeled. We do not make performance claims on behalf of any advertiser. In accordance with the Federal Trade Commission's Guides Concerning the Use of Endorsements and Testimonials in Advertising, 16 C.F.R. Part 255, we disclose all material connections between this site and the products or services it links to.
FlightPerformanceCalc.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. Links to Amazon products on this site use our affiliate tag, williamdunb0d-20. When you purchase through these links, this site may earn a commission — typically between 1% and 4% of the purchase price depending on product category — at no additional cost to you. This disclosure is made in accordance with FTC 16 C.F.R. Part 255. Amazon and the Amazon logo are trademarks of Amazon.com, Inc. or its affiliates.
Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this and other websites. Google's use of advertising cookies enables it and its partners to serve ads based on your visits to this site and/or other sites on the Internet. You may opt out of personalized advertising by visiting Google Ads Settings, or opt out of some third-party vendors' use of cookies for personalized advertising at optout.networkadvertising.org.
The airport weather feature retrieves recent observations from the U.S. National Weather Service (api.weather.gov) and fills calculator fields automatically. This data may be delayed, incomplete, or unavailable, and its display here is NOT an official weather briefing under any regulation. Always obtain an official briefing and current ATIS/AWOS before flight, and verify every auto-filled value. Favorite and recent airports are stored only in your own browser.
Nothing on this website constitutes medical advice, flight safety advice, or a substitute for consultation with a qualified aviation or medical professional. Physical fitness requirements for flight operations vary by operator and jurisdiction.
Nothing on this website constitutes legal, regulatory, or operational advice. Aviation regulations and performance requirements vary by aircraft, operator, country, and applicable airworthiness authority (FAA, EASA, CAA, etc.). Always consult the appropriate regulatory authority and your operator's procedures.
Several US states have enacted privacy laws including Virginia (VCDPA), Colorado (CPA), Connecticut (CTDPA), Texas (TDPSA), Kentucky (KCDPA), and Maryland (MODPA). FlightPerformanceCalc.com does not directly collect or sell personal data and does not meet the thresholds of these laws. We respect the privacy rights of all users regardless of location.
To the fullest extent permitted by law, FlightPerformanceCalc.com, its owners, operators, and contributors disclaim all liability for any direct, indirect, incidental, special, or consequential damages arising from use of this website or reliance on its content, including but not limited to errors in performance calculations or flight safety decisions.
FAA, EASA, and all aircraft manufacturer names and model designations referenced on this site are trademarks of their respective owners. Their use is for descriptive and educational purposes only. No affiliation, sponsorship, or endorsement is implied.
To report an inaccuracy, please contact us here or email info@flightperformancecalc.com.