Number base converter
Dec ⇄ hex ⇄ bin ⇄ oct, live
Convert numbers between decimal, hexadecimal, binary and octal with live results as you type. Big-integer safe, so long values stay exact — a quick reference for developers and students.
How it works
- Open the tool and add your file (or paste your text).
- Adjust the options — everything previews instantly.
- Download the result. Done.
Private by design
This tool runs 100% in your browser. Your files are never uploaded to a server, never stored, and never seen by anyone — close the tab and nothing remains.
Free, no limits
No account, no watermarks, no daily caps. If you also need full design tools, the Ijodly editor is one click away.
Frequently asked questions
Is Number base converter free to use?
Yes — Number base converter is completely free. There is no account to create, no watermark on your results and no daily limits.
Are my files uploaded when I use Number base converter?
No. Number base converter runs entirely in your browser. Your files never leave your device and nothing is stored on a server — close the tab and nothing remains.
Do I need to install anything or sign up?
Neither. Open the page, use Number base converter straight away and download your result. No install, no signup.