Number Base Converter
Convert a number between binary, octal, decimal and hexadecimal at once, with one-click copy. Client-side only.
How it works
- 1
Paste your input
Type or paste your data into Number Base Converter.
- 2
Adjust options
Tweak the available settings — the output updates as you type.
- 3
Copy the result
Copy the output to your clipboard or download it as a file.
Common uses
- Convert a hex color or byte value to decimal and binary.
- Read a binary flag as decimal at a glance.
- Translate between bases while debugging low-level code.
About the Number Base Converter
Convert a number between binary, octal, decimal and hexadecimal at once, with one-click copy. Client-side only.
Number Base Converter is part of a free, privacy-first toolkit. Everything is computed instantly on the client, so your data never leaves the page — useful when you're working with sensitive payloads.
Because number base converter works without any sign-up or installation, you can use it as often as you like and it's always available — on desktop or mobile, and even offline.
Explore more developer tools, or try JSON Formatter · JSON Validator.
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Number Base Converter — FAQ
Enter a value in binary, octal, decimal or hexadecimal and see all four representations at once.