Free Binary, Hex, Octal & Decimal Number Converter Online
Convert numbers across base-2 (Binary), base-8 (Octal), base-10 (Decimal), and base-16 (Hexadecimal) with 2's complement support. — 100% free online utility, zero sign-up, zero paywalls, and private client-side processing.
How It Works
Type in Any Base
Type a number into the Decimal, Binary, Hex, or Octal field.
Real-Time Sync
All complementary base fields update simultaneously.
Inspect Bit Pattern
Review 8-bit, 16-bit, and 32-bit binary representations.
Copy Formatted Value
Copy with 0x (Hex) or 0b (Binary) prefixes.
Frequently Asked Questions
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