Number Base Converter: Hex, Decimal, and Binary

A number base converter rewrites the same integer in binary (base 2), octal (8), decimal (10), or hexadecimal (16). Developers use this for bitmasks, color channels, memory dumps, and permission flags. The value is identical; only the digits change.

Quick map

Base	Digits	Example (42)
Binary	0–1	101010
Octal	0–7	52
Decimal	0–9	42
Hex	0–9A–F	2A

Pitfalls

1. Bit width — 0xFF as 8-bit unsigned is 255; as signed 8-bit it is −1.
2. Prefixes — 0x, 0b, leading zeros in docs may be octal in some languages.
3. Whitespace / separators — strip _ digit separators before pasting into picky tools.
4. Endianness — converting a number ≠ interpreting a byte array in memory order.

Convert with TryDevSnip

Use TryDevSnip Number Base Converter for fast hex/dec/bin switches. For color hex specifically, see Hex to RGB. For ASCII code points, use the ASCII Table.

Privacy one-liner: conversion runs in your browser; not uploaded to our servers for processing.

Also try: Binary Translator for text ↔ binary strings.

FAQ

Why does 010 mean eight in some languages?

Leading zero once meant octal in C-family languages. Prefer 0o10 or explicit base APIs.

How do I convert negative numbers?

Define representation (two’s complement width) first. Plain “base convert” UIs often assume non-negative integers.

Is hex case sensitive?

No for values — 2a and 2A are the same. Style guides may prefer uppercase.

Can I convert fractions?

Floating-point bases are a different problem (precision). Stick to integers unless the tool documents fractional support.