Number base
Convert between binary, octal, decimal, hex and a custom base (2–36).
Also known as: Binary/hex/decimal converter.
100% offline · macOS, Windows & Linux · free for personal use
// overview
What it does
Number base is one of 55 tools in Hexkit, a desktop developer toolbox that runs entirely on your own machine. Convert between binary, octal, decimal, hex and a custom base (2–36).
Because Hexkit is a native app rather than a web page, anything you paste into the number base stays local — there are no uploads, no accounts and no telemetry. You can convert between formats in seconds even with the network turned off, which makes it safe for tokens, keys and production data.
// steps
How to use Number base
- 1
Open Hexkit and select "Number base", or press the command-palette key and start typing its name.
- 2
Paste or type the value you want to convert. Convert between binary, octal, decimal, hex and a custom base (2–36).
- 3
Read or copy the result. Everything is computed locally by Hexkit's Rust core, so nothing is ever uploaded.
Tip: the command palette opens any tool in one keystroke.
// faq
Frequently asked questions
- Is Number base free?
- Yes. Number base is part of Hexkit, which is free for personal and non-commercial use on macOS, Windows and Linux.
- Does Number base work offline?
- Completely. Hexkit runs every tool locally with no network access, so Number base works on a plane or an air-gapped machine.
- Is my data uploaded anywhere?
- No. Hexkit makes no network calls and has no telemetry — whatever you paste stays on your computer.
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Related tools
Use Number base without sending your data anywhere.
Number base ships inside Hexkit — a free, offline developer toolbox for macOS, Windows and Linux. No account, no uploads.