Number Base Converter

Convert numbers between binary, octal, decimal and hexadecimal.

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How to use Number Base Converter

Three quick steps — no sign-up needed

  1. Step 1

    Enter the value

    Type the number in the base you are starting from.

  2. Step 2

    Select the From base

    Choose Binary (2), Octal (8), Decimal (10), or Hexadecimal (16).

  3. Step 3

    Copy other bases

    Read all base representations and tap to copy the one you need.

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About Number Base Converter

Number Base Converter translates integers between binary, octal, decimal, and hexadecimal. Developers and CS students searching "binary to decimal", "hex to decimal", or "number base converter" need fast radix changes for debugging and coursework.

Enter a value, select the source base, and read equivalents in other bases. Hex digits A-F are case-insensitive on input in most tools - keep output style consistent in code reviews.

Very large integers may be limited by practical browser number handling. For arbitrary-precision needs, use dedicated big-integer libraries.

Benefits of Number Base Converter

Four common bases Binary, octal, decimal, hex.
All-bases view See every representation at once when shown.
Programming workflow Debug masks, colours, and addresses faster.
Study aid Check manual base-conversion homework.

Frequently asked questions

What is hexadecimal?

Base 16 using digits 0-9 and A-F.

Why do programmers use hex?

It maps cleanly to bytes (two hex digits per byte).

Is leading 0b or 0x required?

Usually optional on input - follow the field hints.

Can it convert fractional bases?

This tool focuses on whole-number base conversion.

Binary to hex shortcut?

Group binary digits in sets of four, or just use the converter.