Free online number base converter. Convert between binary (BIN), octal (OCT), decimal (DEC), and hexadecimal (HEX) instantly. One-click copy. Pure frontend. | No Signup, Client-Side · BigInt Support
Zero Dependencies·Instant ConversionNumber Base Conversion
Binary Hex Converter - Free Online Number Base Conversion Tool
Binary Hex Converter is a free online tool for converting numbers between different bases: binary (BIN, base-2), octal (OCT, base-8), decimal (DEC, base-10), and hexadecimal (HEX, base-16). Simply type a value and see all conversions instantly. Perfect for programmers debugging, network engineers configuring IP addresses, and students learning number systems. All computation happens on your device — Input Base, Enter Value and other inputs stay in your browser.
Why choose Binary Hex Converter
- BIN ↔ OCT ↔ DEC ↔ HEX bidirectional conversion
- Real-time conversion as you type
- One-click copy for any result
- BigInt support for large numbers
- Works offline - pure frontend
FAQ
What number bases does this converter support?
It supports binary (BIN, base-2), octal (OCT, base-8), decimal (DEC, base-10), and hexadecimal (HEX, base-16).
Is there a maximum input value?
For decimal input, JavaScript's safe integer limit is 2^53 - 1 (about 9 quadrillion). Values beyond this are handled with BigInt. Binary and hex inputs have no practical limit.
Is my data sent to a server?
No. All conversions happen locally in your browser. Nothing is uploaded to any server.
Does the hex input support uppercase and lowercase?
Yes. You can enter hex values in uppercase (A-F) or lowercase (a-f). Output is displayed in uppercase for readability.
Can I convert decimal numbers?
Currently this converter handles integers only. For decimal/fractional conversion, we recommend using a scientific calculator tool.