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Number Base Converter

Convert between binary, octal, decimal, and hexadecimal number systems.

Input

Results

How to Use

1 ### Enter a Number
Type a number in any base system -- binary (base 2), octal (base 8), decimal (base 10), or hexadecimal (base 16). The input accepts whole numbers and fractional values.
2 ### Select the Base
Choose the number base of your input from the dropdown menu. The converter will automatically display the equivalent values in all other bases in real time.
3 ### Copy the Result
Click the Copy button next to any converted value to copy it to your clipboard. Use the Prefix toggle to add common programming prefixes like 0b, 0o, or 0x.
4 ### Use in Your Code
Paste the converted value directly into your source code, debugger, or any application that requires a specific number base format.

Features

  • Convert between binary, octal, decimal, and hexadecimal number systems
  • Real-time conversion updates as you type
  • Support for large numbers and fractional values
  • One-click copy to clipboard for any converted value
  • Input validation with clear error messages
  • Optional programming prefixes (0b, 0o, 0x) for direct code use

    • Use Cases

    ### Convert Hex Color Codes to RGB Quickly convert hexadecimal color codes like #FF5733 to their decimal RGB values for use in design tools, CSS, or image processing libraries.
    ### Work with Binary Data in Programming Convert between binary and other bases when working with bitmasks, flags, low-level data structures, or embedded systems programming.
    ### Debug Memory Addresses Convert hexadecimal memory addresses from debuggers and crash logs to decimal or binary for easier analysis and cross-referencing.
    ### Math and Computer Science Education Learn and verify number system conversions for coursework, exams, or self-study. Instantly check your manual calculations across all bases.

    Frequently Asked Questions

    What number bases does this converter support?

    Binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16), with real-time conversion between all of them.

    Can I convert fractional numbers?

    Yes. The converter accepts both whole numbers and fractional values in any supported base.

    What are the 0b, 0o, and 0x prefixes for?

    They are standard programming prefixes for binary, octal, and hexadecimal literals. Enable the Prefix toggle to add them automatically when copying.