Free Online Number Base Converter

Convert numbers between Binary (Base 2), Octal (Base 8), Decimal (Base 10), and Hex (Base 16).

Client-Side Guarantee: Processed 100% locally in your browser. No files or data are uploaded.

How to Use the Number Base Converter

  1. Enter a number in any base field.
  2. All other bases calculate automatically.
  3. Copy any converted value.

Key Features

✓ Simultaneous Binary, Octal, Decimal, Hex updates
✓ Supports arbitrary custom bases (2 to 36)
✓ Bit length indicator
✓ Step-by-step math explanation

About Number Base Converter

Convert any number between common computing bases: Binary, Octal, Decimal, Hexadecimal, and arbitrary bases from 2 to 36 with instant live calculation.

Frequently Asked Questions

Can it handle large numbers?

Yes, it uses JavaScript BigInt arithmetic to prevent 64-bit float precision loss.

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