Number Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal.
Free Web vs Desktop App
Web (Free)
- +Number Base Converter with basic functionality
- +No signup or account required
- +Works in any modern browser
- -Full functionality on the web
- -Single tool per page, no integrations
Desktop App ($29 one-time)
- Integrated into the developer workspace alongside your code
- All 16 developer utilities in one ToolBox
- Plus terminal, HTTP client, database client, Docker manager
- AI agents, code editor, Git client, and 100+ more features
- macOS, Windows, Linux — one-time purchase, own forever
About Number Base Converter
Enter a number in any base (binary, octal, decimal, or hexadecimal) and instantly see the conversion to all other bases. Supports large numbers and validates input for each base. Essential for low-level programming, debugging, and working with color codes.
Frequently Asked Questions
Is Number Base Converter free to use?
Yes! This online version is completely free with no signup required. Full functionality on the web. For unlimited usage and full integration with 100+ developer tools, download the 1DevTool desktop app ($29 one-time).
Is my data safe?
Absolutely. All processing happens entirely in your browser. Your data never leaves your machine — nothing is sent to any server. The tool runs 100% client-side using JavaScript.
What do I get with the desktop app?
The desktop app includes Number Base Converter with no limits, plus 15 other developer utilities. Beyond the ToolBox, you get multi-agent AI terminals, HTTP client, database client (26 engines), Docker manager, Git client, code editor, browser preview, and more — all in one workspace. $29 one-time, no subscription.
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Like this tool? There's a lot more.
Download 1DevTool to get Number Base Converter with no limits, plus 15 other utilities, AI terminals, HTTP client, database client, and 100+ features.