How do I convert binary to decimal?

Multiply each binary digit by 2 raised to its position power (rightmost = position 0), then sum. E.g., 1011 = 1×8 + 0×4 + 1×2 + 1×1 = 11.

What is hexadecimal used for?

Hex (base 16) is used in computing for memory addresses, color codes (#FF6B35), byte values, and cryptographic hashes — it's more compact than binary while mapping cleanly to 4-bit groups.

What does 0x mean in front of a number?

The 0x prefix denotes a hexadecimal literal in most programming languages (C, JavaScript, Python). Similarly, 0b means binary and 0o means octal.

What is the largest 32-bit integer?

2,147,483,647 (signed) or 4,294,967,295 (unsigned). In hex: 0x7FFFFFFF (signed) or 0xFFFFFFFF (unsigned). In binary: 31 or 32 ones.

developer Free No signup

Number Base Converter

Convert numbers between binary, octal, decimal, and hexadecimal — instantly with bitwise breakdown.

Loading tool…

About this tool

Convert integers between all common numeral systems: binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16). Shows a 32-bit binary breakdown. Supports custom base conversion for any base between 2 and 36.

How to use

1 Type a number in any field (binary, octal, decimal, or hex).
2 All other representations update instantly.
3 The 32-bit binary breakdown is displayed at the bottom.
4 Use the custom base field to convert to any base from 2 to 36.

Frequently Asked Questions

Related tools

Hash Generator (SHA-256, SHA-512)

Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text or files — runs offline in your browser.

JSON Formatter & Validator

Format, validate, and minify JSON — with syntax error pinpointing.