Binary Hex Number Converter

Octal decimal radix for coders

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

Convert any number between binary, octal, decimal, and hex — live, as you type. Every base updates at once, with exact integer math and zero float drift. Most calculators round, guess the bit width, or hide what's actually happening in the bits. This one doesn't. Type a value in any base and read all four representations side by side in clean, monospaced, grouped digits — plus signed and unsigned interpretation, set-bit counts, and the raw bytes, at 8, 16, 32, or 64-bit width. WHAT YOU GET - Every base at once: binary, octal, decimal and hex stay in sync as you type - Any radix from 2 to 36 with a live slider, so odd bases are one tap away - Bit-level truth: signed two's-complement, unsigned, set-bit count and big-endian bytes - Bitwise lab with a tappable bit grid — AND, OR, XOR, NOT and shifts, flipped bit by bit - Developer reference: full ASCII table, powers of two, common masks and a two's-complement explainer - Saved history you can scroll back through and copy any value from PERFECT FOR - Developers reading hex dumps, registers and color values - Embedded and firmware engineers working close to the metal - CS and engineering students learning number bases and bit math - Anyone who needs an exact, no-nonsense radix converter WHY NOT JUST USE A CALCULATOR? A regular calculator drops leading zeros, drifts on large values, and shows one base at a time. BaseConvert keeps exact integer math at a fixed bit width and shows binary, octal, decimal and hex together — so you see the bits, not a rounded guess. PRIVACY Everything runs on-device. No accounts, no ads, no tracking — your numbers never leave your phone. FULL ACCESS The bitwise lab, the full developer reference, and unlimited saved history unlock with Premium — available as a weekly or yearly plan, or a one-time lifetime unlock. Convert between the four core bases free, forever. Type your first value and watch every base light up. Terms of Use (EULA): https://web-levi.web.app/terms Privacy Policy: https://web-levi.web.app/privacy-policy Questions? tphuc.work@gmail.com

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Bug fixes and performance improvements.

Version 1.2.2

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In-App Purchases

The developer, Phuc Pham, 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 Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

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    Information

    Seller
    Phuc Pham
    Size
    2.7 MB
    Category
    Developer Tools
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 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+
    In-App Purchases
    Yes
    • Bitwise Lab · Pay Once $29.99
    • Programmer Calc · Yearly $14.99
    • ASCII Table · Weekly $2.99
    • Learn More
    Copyright
    © 2026 Phuc Pham
  • Developer Website
  • Privacy Policy

    • More by Phuc Pham

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