Number base converter
Convert numbers between binary, octal, decimal and hexadecimal, even very large ones.
How to use
Number base converter lets you convert numbers between binary, octal, decimal and hexadecimal, even very large ones. Enter your input and the result appears instantly, ready to copy.
It runs entirely client-side, so your input stays on your device. It's completely free, with no sign-up, no watermarks and no limits on how often you use it.
Examples
Paste your data and the tool processes it live, updating as you type.
Once number base converter shows your output, use the copy or download button to grab it — no retyping.
Frequently asked questions
Is Number base converter free to use?
Yes. Number base converter is completely free with no sign-up, no watermarks and no usage limits.
Is my data private?
Yes. It runs entirely client-side, so your input stays on your device.
Does Number base converter work on mobile?
Yes. It works in any modern browser on desktop, tablet or phone, and keeps working offline once the page has loaded.
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