Number Base Converter
Convert between binary, octal, decimal and hex.
Edit any field — the others update instantly. Values are exact integers (no rounding).
About the Number Base Converter
Convert numbers between binary, octal, decimal and hexadecimal with instant, two-way updates. A quick reference for developers working with bitmasks, colors, memory addresses and low-level data.
How to use it
- 1Type a number in any base — binary, octal, decimal or hex.
- 2All other bases update simultaneously.
- 3Copy the representation you need.
Frequently asked questions
- Can I convert hex color values?
- Yes — enter the hex digits to see their decimal and binary equivalents, handy for working with colors and flags.
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