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  2. Converters & Encoders
  3. Number Base Converter
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About Number Base Converter

Convert numbers between binary, octal, decimal, and hexadecimal bases. Developers and students use this daily when working with low-level programming, memory addresses, or digital logic.

How to Use

  1. 1Enter a number in any supported base.
  2. 2Select the input base (binary, octal, decimal, or hex).
  3. 3See the value in all other bases instantly.

Key Features

  • Binary, octal, decimal, and hexadecimal conversion
  • Real-time output across all bases
  • Handles large integers
  • Grouped digit display for readability (e.g., 1010 0011)

Frequently Asked Questions

Can I enter negative numbers?

The tool converts unsigned values. For signed representations like two's complement, convert the positive magnitude and apply the sign convention yourself.

What is the largest number supported?

The converter handles numbers up to JavaScript's safe integer limit (2^53 - 1). For larger values, results may lose precision.

Privacy First

All processing happens directly in your browser. Your files never leave your device and are never uploaded to any server.