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Aviation Binary, Hexadecimal and Decimal Converter for Aviation Technicians (ARINC 429)

Convert binary numbers to hexadecimal (and vice versa) quickly and accurately. Essential for avionics troubleshooting, ARINC 429 data decoding, and digital system maintenance. Supports 8-, 16-, 32-bit formats with real-time validation.


Binary ↔ Hexadecimal ↔ Decimal Converter

Tip: Paste grouped values (e.g. 1111 0000 or A3 F1) — spaces are auto-removed.

Why Binary & Hex Matter in Aviation

In modern aircraft, digital systems communicate using binary data. Maintenance engineers often need to:

Conversion Rules

Bits Binary Hex Decimal Range
4-bit Nibble 1111 F 0-15
8-bit Byte 10101100 AC 0-255
16-bit Word 1111000011110000 F0F0 0-65,535
32-bit DWord 11111111... FFFFFFFF 0-4,294,967,295

Avionics Data FAQ

Computers think in Binary (0s and 1s), but binary strings are too long for humans to read quickly. Hexadecimal is used because exactly 4 bits of binary (a "nibble") map to 1 hex character. This makes it much easier to represent 16-bit or 32-bit data words compactly without the complex math required to convert to decimal.

In an ARINC 429 word, bits 1-8 are the "Label" (often shown in Octal), while the rest of the data is often decoded using Hex. If a Built-In Test Equipment (BITE) display shows a fault code like 0x4A3, an AME can convert this to binary to see exactly which individual "status bits" are set to 1 (indicating a specific sub-component failure).

  • BNR (Binary): Used for continuous data like altitude or airspeed. It treats the binary string as a single mathematical value.
  • BCD (Binary Coded Decimal): Often used for radio frequencies or clock time. Each 4-bit group represents a single decimal digit (0-9).
This converter helps you translate the raw hex dump from a data loader into these readable formats.

The 0x prefix is a standard convention in programming and aviation manuals to indicate that the following number is in Hexadecimal. For example, 0x10 is actually 16 in decimal, while 10 without the prefix would just be ten.