# E6B Aviation Calculator - FLT9 — Flight Computer and EFB

> Aviation flight computer and electronic flight bag with 47 calculators. (iPhone/iPad app by Raj Jeshang, Inc..)

- Source: https://appshunter.io/ios/app/e6b-aviation-calculator-flt9/id6475892430 (this page in markdown: same URL + `.md`)
- Developer: [Raj Jeshang, Inc.](https://appshunter.io/developer/1725358290)
- Category: Utilities, Navigation
- Price: Free with in-app purchases (on sale, was $4.99)
- Rating: 4.15/5 from 26 App Store ratings · 22 written reviews indexed
- Age rating: 4+
- Requires: iOS 17 · 10 MB
- Languages: English
- Released: 2024-01-24
- Data updated: 2026-08-09
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/e6b-aviation-calculator-flt9/id6475892430/reviews.md

## What is E6B Aviation Calculator?

Try it for free - upgrade to unlock all flight calculators. You get full access to all 47 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 climb and descent rate in feet / nm
- Required vertical speed in feet / minutes
- Slope and gradient
- 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/

## Key features

- E6B flight calculations
- Ascent and descent planner
- Fuel and weight/balance calculator
- Holding pattern calculations
- Performance data interpolation
- Extensive unit conversions
- Customizable default units

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Full Access | $2.99 | per month |
| Full Access | $2.99 | per month |
| Full Access | $6.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Lifetime Full Access | $8.99 | one-time |


## Recent user reviews (10 of 22)

All indexed reviews: https://appshunter.io/ios/app/e6b-aviation-calculator-flt9/id6475892430/reviews.md

### 5/5 — Awesome App

*2025-12-28, version 2.2.2*

Used it a bunch of times for some recent flights. Very user friendly

### 5/5 — Useful

*2025-10-12, version 2.2.1*

Great for quick calculations on ground and in flight

### 3/5 — Not Free

*2025-10-08, version 2.2.1*

Very simple, the app isn't actually free. It costs $2.99/mo or a lifetime purchase of $8.99. Very deceptive, but if you don't mind the mild case of false advertising, it appears to work good.

### 1/5 — Purchases IMMEDIATELY

*2025-08-06, version 2.1*

This is a bad app. Markets itself as free just to ask for immediate purchase upon opening

### 4/5 — Great so far

*2025-07-05, version 2.1*

Easy to use, I like the layout and having the local and zulu times at the top are a nice touch. 

Would like to have a pressure/density altitude calculator as well tho! Don’t know why thats not on here as it seems like a simple piece missing. Just plugging in elevation, altimeter setting and temperature.

### 5/5 — Perfect for Student Nav Logs to Quick Ref for Licensed and Rated Pilots

*2025-03-21, version 2.0*

This E6B app is perfect for filling out your nav log or for quick reference while in flight.
It is designed to simply enter your known data and supplies your unknowns in a logical format. All the calculations are on a single page, so there is no page flopping when looking for a previous solution. 
The built-in keyboard facilitates the ease of use and reduces the chance of error especially when trying to get a quick calculation done. 
Highly recommend this E6B app.

### 3/5 — FLT1 E6B

*2025-02-15, version 1.2.4*

The E6B from FLT1 is missing an important feature in weight and balance. There needs to be a function to subtract weight for fuel burn. The weight and balance calculator only allows for weight to be added. Once that is added it will get 5 Stars.

### 5/5 — Super!

*2024-09-22, version 1.1.1*

Saw a colleague using it and tried it out. Recommend it! Makes preflight planning quick and easy

### 5/5 — Best nav log tool I’ve seen

*2024-09-10, version 1.1.1*

Simple and clear. Made pre-flight planning and performance calculations a breeze. Interpolation tool is a nice touch - haven’t seen it anywhere else.

Simple and robust, with adequate details, which is what you want while flying.

### 5/5 — Neat app

*2024-09-06, version 1.1.0*

Simple and easy to use. Made planning xc flights fast, esp. when variables change, like baro, temp, wind dir./ speed, etc.
Zulu time (and local) on top of screen is a nice bonus. Weight and balance calculator too.

## Frequently asked questions about E6B Aviation Calculator

### What does the E6B Aviation Calculator app do?

This app functions as a comprehensive aviation calculator and electronic flight bag (EFB). It offers 47 different aviation functions, including E6B calculations, ascent/descent planning, fuel management, weight and balance, and holding pattern computations.

### What are the key features of this app?

Key features include a full E6B flight computer, ascent and descent planner, fuel calculator for conversions and endurance, weight and balance calculations, holding pattern visualization, performance data interpolation, and a wide range of unit conversions between imperial and metric systems.

### How much does the E6B Aviation Calculator app cost?

The app offers a free version to try, with an option to upgrade to unlock all flight calculators. This suggests a freemium model where core functionality is free, and advanced features require a purchase.

### What units can be converted in this app?

The app supports conversions for altitude (feet/meters), pressure (inHG/millibars), distance (NM/statute miles/km), speed (knots/mph/kmh), temperature (Fahrenheit/Celsius/Kelvins), volume (gallons/liters), weight (pounds/kilograms), and center of gravity/arm (inches/meters).

### Who is the target audience for this app?

This app is designed for pilots, student pilots, and aviation professionals who require a reliable and versatile tool for flight planning, in-flight calculations, and managing various aviation-specific data.

## Version history (last 5 releases)

### 2.3.1 — 2026-01-28

New in this version: Under the hood improvements, a small performance boost, and more accurate ground speed calculations.

### 2.3 — 2026-01-11

This version includes an updated climb and descent calculator, as well as an improved UI for easier navigation on the iPad. It also includes better support for hardware keyboards.

### 2.2.2 — 2025-10-13

Minor UI improvements and clarified in app purchase description

### 2.2.1 — 2025-10-03

This version improves UI for users on older devices with smaller screens

### 2.2 — 2025-09-18

New feature: Holding pattern visualizer

## Apps similar to E6B Aviation Calculator

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [PilotPal: Flight Planner EFB](https://appshunter.io/ios/app/pilotpal-flight-planner-efb/id1060952159) | 4.7 (663) | Free | Utilities |
| [C172 Performance](https://appshunter.io/ios/app/c172-performance/id741721884) | 4.9 (52) | Free | Utilities |
| [Hangar - Social Flight Tracker](https://appshunter.io/ios/app/hangar-social-flight-tracker/id6468550769) | 4.9 (1,119) | Free | Utilities |
| [xWind](https://appshunter.io/ios/app/xwind/id1477120117) | 4.6 (549) | $0.99 | Utilities |
| [PilotGPT Aviation](https://appshunter.io/ios/app/pilotgpt-aviation/id6759131242) | 4.0 (53) | Free | Utilities |
| [CX-3 Flight Computer](https://appshunter.io/ios/app/cx-3-flight-computer/id1645428895) | 4.0 (10) | $19.99 | Utilities |

## More apps by Raj Jeshang, Inc.

- [SwatchMe - Color Identifier](https://appshunter.io/ios/app/swatchme-color-identifier/id6502667863)

All apps by Raj Jeshang, Inc.: https://appshunter.io/developer/1725358290

## Related topics

[e6b aviation calculator](https://appshunter.io/ios/topics/e6b-aviation-calculator) · [e6bx](https://appshunter.io/ios/topics/e6bx) · [e6b calculator](https://appshunter.io/ios/topics/e6b-calculator) · [e6b](https://appshunter.io/ios/topics/e6b) · [e6bx e6b flight computer](https://appshunter.io/ios/topics/e6bx-e6b-flight-computer) · [aviation calculator](https://appshunter.io/ios/topics/aviation-calculator) · [flight computer sim](https://appshunter.io/ios/topics/flight-computer-sim) · [aviation fuel calculator](https://appshunter.io/ios/topics/aviation-fuel-calculator) · [e6bja e6b flight computer](https://appshunter.io/ios/topics/e6bja-e6b-flight-computer)

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-09.*