Frequently Asked Questions
Everything you need to know about the Number Base Converter.
How do I convert binary to decimal?
Multiply each binary digit by its positional power of 2 and sum the results; the tool shows this expansion automatically.
What bases does this support?
Binary, octal, decimal, and hexadecimal, converted to and from each other.
Is it free?
Completely free, no sign-up or limits.
Does it show the steps?
Yes, positional-weight expansion and repeated-division steps are shown, not just the final answer.
Can I convert negative numbers?
Yes, negative integers are supported and clearly labelled.
What if I enter an invalid digit for the base?
The tool flags it immediately (e.g. a 2 typed in binary mode) instead of misinterpreting it.
Does it handle hexadecimal letters (AโF)?
Yes, both uppercase and lowercase hex digits are accepted.
Is there a size limit on numbers?
Very large inputs are capped with a clear message to avoid performance issues; typical numbers convert instantly.
Is my data stored?
No; all conversion happens in your browser.
Does it work on mobile?
Yes, fully responsive with no overflow.