Number Base Converter
Convert numbers between binary, octal, decimal and hexadecimal all at once. Whether you are reading a hex color, decoding a permission mask, working with bit flags or just checking an assembly listing, being able to see the same value in every common base saves constant mental arithmetic. Type a value into any of the four fields and the other three update instantly, so you never have to run a separate conversion. It validates that your input contains only digits legal for that base, so mistakes are caught immediately rather than producing a wrong answer. Enter a number in whichever base you have. All conversion runs locally in your browser, with nothing sent to a server.
How to use Number Base Converter
- Type a number into the base you know.
- Read the equivalent binary, octal, decimal and hex values.
- Copy the representation you need.
Frequently asked questions
Which number bases are supported?
It converts between binary, octal, decimal and hexadecimal, the four bases developers use most.
Do all four representations update at once?
Yes. Type a value into any base and the other three representations update live to match.
Can it handle large numbers?
It converts standard integer values across the four bases; enter a number in any base and read its equivalents.
What is Number Base Converter?
Convert numbers between binary, octal, decimal and hexadecimal all at once. Whether you are reading a hex color, decoding a permission mask, working with bit flags or just checking an assembly listing, being able to see the same value in every common base saves constant mental arithmetic.
Is Number Base Converter free to use?
Yes. Number Base Converter is completely free, with no sign-up and no usage limits.
Does Number Base Converter work in a web browser?
Yes. Number Base Converter runs in any modern web browser. There is nothing to download or install.
Is my data private with Number Base Converter?
Yes. Number Base Converter runs entirely on your device in your browser, so nothing you enter is uploaded to a server.
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