Free Binary Hex Converter Online

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 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 processing is done locally in your browser.

Key Features

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.

🔢 Binary Hex Converter

Number Base Conversion