Number Base Converter
Convert numbers between binary, decimal, hexadecimal and octal instantly. Free and private in your browser.
Binary, decimal, hex & octal converter
Convert a number between binary (base 2), octal (base 8), decimal (base 10) and hexadecimal (base 16) at once — type into any field and the others update instantly. Essential for programming, networking and computer science.
How to convert between number bases
- Enter a number in binary, decimal, hex or octal.
- The other bases update instantly in your browser.
- Use it for programming, homework or debugging.
- Copy the value you need. Nothing is uploaded.
Frequently asked questions
Can I convert binary to decimal?
Yes. Enter a binary number and see the decimal, hex and octal values instantly.
Does it support hexadecimal and octal?
Yes. You can convert between binary, decimal, hexadecimal and octal.
Is my data uploaded?
No. Conversion runs in your browser.
Is it free?
Yes. The converter is completely free with no sign-up.