Free Binary Octal Hex Converter
Bitwise operations, subnet masks, color codes and opcodes all demand fluency in bases 2, 8 and 16. This free converter moves between binary, octal and hexadecimal in either direction, with decimal, bit-length and byte counts shown alongside.
Value in every base
| Representation | Value |
|---|
How to Use the Binary Octal Hex Converter
- Enter a value in binary, octal or hexadecimal.
- Choose the from/to bases — the ⇄ button swaps them.
- See the conversion instantly, with decimal, bit and byte counts below.
- Copy the result with one click.
Features
Bidirectional conversion between binary, octal and hexadecimal with swap button, arbitrary-precision integers, bit/byte counts, and grouped binary output for readability.
Benefits & Use Cases
Network engineers reading subnet masks, developers working with flags and bitmasks, electronics hobbyists, and students all get exact multi-base views of one value in a single table.
Tips
Learn the 16 hex-to-binary nibbles (0=0000 … F=1111) and conversions become mechanical. A /24 subnet mask is 255.255.255.0 = FFFFFF00 in hex.
Frequently Asked Questions
How do I convert binary to hexadecimal?
Enter the binary value, set From to binary and To to hexadecimal. For example, 11111111 = FF.
How many bits are in a hex digit?
4 bits per hex digit (a nibble); 2 hex digits make a byte.
How do I convert octal to binary?
Each octal digit becomes 3 bits: 17 octal = 001 111 = 1111 binary.
What byte count does it show?
The minimum whole bytes needed to hold the value — bits rounded up to multiples of 8.
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