Perform calculations and conversions between binary, octal, decimal, and hexadecimal number systems. Offers detailed step-by-step conversion explanations and customizable settings for display preferences and negative number representation.





250+ iOS apps curated and reviewed
Binary Calculator. is the household name in binary calculator, but it's far from the only option. We track 250+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free | 4.9★ (8) | Yes | Yes | Jul 2026 | |
| 2 | Free | 4.9★ (68) | No | Yes | Jul 2026 | |
| 3 | Free | 4.5★ (28) | No | No | Jul 2026 | |
| 4 | Free | 4.7★ (845) | No | Yes | Aug 2026 | |
| 5 | Free was $0.99 | — | No | No | Aug 2026 | |
| 6 | Free | — | No | No | May 2026 | |
| 7 | Free | 4.4★ (40) | Yes | No | May 2026 | |
| 8 | Free | 5.0★ (2) | Yes | Yes | Aug 2026 |





Perform calculations and conversions between binary, octal, decimal, and hexadecimal number systems. Offers detailed step-by-step conversion explanations and customizable settings for display preferences and negative number representation.





Easily convert numbers between Binary, Decimal, Hexadecimal, and Octal formats. This educational tool is designed for quick and accurate number system conversions.






Easily convert between decimal and binary number systems with a simple interface. Supports pasting input and copying output for quick operations. Ideal for quick calculations without complex features.


This application serves as a versatile calculator designed for programmers. It supports conversions and calculations across binary, decimal, and hexadecimal number systems.






Perform calculations and conversions between decimal, hexadecimal, and binary bases in real-time. Ideal for programmers and computer scientists, it offers simultaneous display of values across all three modes and supports bitwise operations and complements.


Perform mathematical operations like addition, subtraction, division, and multiplication across binary, hexadecimal, octal, and decimal number systems. Supports both integer and fractional numbers with step-by-step solutions.




Perform calculations across binary, hexadecimal, and decimal number bases simultaneously. Easily switch input modes and see results update instantly for all bases. Supports unsigned and 2's complement for negative numbers, along with arithmetic, logic, and bitwise operations.




This app offers a user-friendly calculator with large buttons and extensive customization options. It features a dual-line display to see input and results simultaneously, saves your calculation history, and provides full scientific functions. Personalize layouts, themes, and even button symbols to suit your needs.


Easily convert numbers between binary, decimal, and hexadecimal formats. This tool is ideal for programming, digital electronics, and mathematics, offering a simple interface for instant conversion results.


This app offers a versatile calculator with three distinct modes: Basic, Scientific, and Programmer. It provides a history view, sharing capabilities, and supports various input and output formats. The app is designed for iPhone, iPad, and iPod Touch.


Easily perform arithmetic operations on binary numbers with this calculator. It offers basic and advanced modes, a history of past calculations, and an in-app binary keyboard for quick input. Get results in seconds with step-by-step solutions.


This app functions as a scientific calculator, enabling users to input and edit complex formulas with ease. It supports formula history, variable memory, and various number system conversions for accurate calculations.






This tool assists developers with number base conversions and CRC calculations for strings and hex bytes. Additional features are planned for future updates.


Easily convert text, binary, hexadecimal, and integer values. This app offers a minimalistic design and is great for encoding messages or learning about different number systems.