Number System Converter
Convert between binary, octal, decimal and hex.
How to use the Number System Converter
Provide the source data
Paste text or select files, depending on the converter. Detection reports the format that was recognised.
Choose the target format
Set delimiters, headers or archive options so the output matches the system that will consume it.
Validate and download
Check the preview or entry list, then copy or download the converted result.
What Number System Converter is for
Enter a value in any base and see it in the others, with optional bit-width grouping. Supports bases 2 through 36 and validation for invalid digits.
The Number System Converter is part of the Converters collection on ToolFlow. It is designed for one concrete job: convert between binary, octal, decimal and hex. Everything runs client-side, so you can use it with sensitive material without creating a copy on someone else's server.
Common use cases
- Read a hex colour
- Debug bit flags
- Check a binary mask
Good to know
- No account is required, and there is no usage limit on the browser tool.
- Processing happens locally. Files are read from disk and the result is written back to your downloads folder.
- Results are reproducible: the same input and options produce the same output, with no hidden server round-trip.
- If the tool needs a live data source, the page states it explicitly instead of silently failing.
Number System Converter FAQ
The questions people ask before using this tool.