E6B Aviation Calculator - FLT9
Flight Computer and EFB
Free · In‑App Purchases · Designed for iPad
** Please note, the app is free to download, but a one-time purchase or subscription is required to unlock full access. Free trial is available through the subscription option **
Designed to be quick, efficient, and accurate, Flight9 E6B groups all important calculations together to make your flight planning seamless. Flight9 E6B is a useful aviation calculator for both student and private pilots.
Available through a one-time purchase, or an affordable subscription, you get full access to all 46 aviation functions:
E6B
- Pressure and density altitudes
- True Airspeed, calibrated airspeed, and mach number
- Wind correction angle
- True heading and compass heading
- Crosswind, headwind, and tailwind
- Ground speed and flight time
- Fuel burn
- Cloud base, cloud temperature, and freezing point / altitude
Ascent and descent planner
Calculate:
- Required vertical speed
- Slope
- Distance to top of climb / from top of descent
- Time to climb or descend
Fuel Calculator
- Convert between imperial and metric units of volume and weight for Avgas and Jet-A:
Gallons ↔ Liters ↔ Pounds ↔ Kilograms
- Calculate the total endurance given the useable fuel and fuel burn rate.
- Calculate total fuel burnt for flight-time
Weight & Balance
- Quickly and accurately calculate aircraft's CG at ramp, takeoff, landing, and zero-fuel situation
Holding Pattern
- Visualize entry patterns and calculate wind correction to maintain holding pattern
Interpolate
- Interpolate up to three columns of performance data tables
Convert
-14 conversions between imperial and metric units:
- Feet ↔ Meters
- Inches of mercury ↔ Millibars
- Nautical miles ↔ Statute miles ↔ Kilometers
- Fahrenheit ↔ Celsius ↔ Kelvins
- Gallons ↔ Liters
- Pounds ↔ Kilograms
Time Calculator
- Add (or subtract) time in HH:MM:SS formats.
- Convert time between HH:MM:SS and decimal hours, minutes, and seconds.
Change default units for international users
- Altitude in feet or meters
- Barometric pressure in inches of mercury (inHG) or millibars / hectopascals (mb / hPa)
- Distances in nautical miles, statute miles, and kilometers
- Speed in knots, miles per hour, and kilometers per hour
- Temperature in Fahrenheit and celsius
- Volume in US gallons and liters
- Weight in pounds and kilograms
- Center of gravity / arm in inches and meters
Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Minor UI improvements and clarified in app purchase description
The developer, Raj Jeshang, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Raj Jeshang, Inc.
- Size
- 11.3 MB
- Category
- Utilities
- Compatibility
Requires iOS 17 or later.
- iPhone
Requires iOS 17 or later. - iPad
Requires iPadOS 17 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Full Access $2.99
- Lifetime Full Access $8.99
- Full Access $6.99
- Full Access $2.99
- Copyright
- © 2025 Raj Jeshang