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Number Base Converter

Convert values between binary, octal, decimal, and hexadecimal number bases.

Number Base Converter interactive tool

Enter Number in Any Base
Conversion Summary
Enter a number in any field to see conversions.

What Is Number Base Converter?

A number base converter is useful for programmers, computer science students, and mathematicians. It translates values between common counting systems, such as decimal (base 10), binary (base 2), hexadecimal (base 16), and octal (base 8).

Common Number Bases and How to Convert Binary to Decimal or Hex

  • Decimal (Base 10): The standard system used in everyday life, using digits 0-9.
  • Binary (Base 2): The fundamental language of computers, using only 0s and 1s. This binary to decimal converter makes conversions easy.
  • Hexadecimal (Base 16): Widely used in computing (like color codes or memory addresses) because it compactly represents binary data. Uses digits 0-9 and letters A-F. Use this hex to decimal converter for quick translation.
  • Octal (Base 8): Sometimes used in computing, representing numbers using digits 0-7.

Why Use an Online Number Base Converter?

Manually converting large numbers between bases is tedious and prone to arithmetic errors. This browser-based tool handles the supported conversions without requiring a download.

How To Use the Number Base Converter

  1. Enter a number in any of the base fields (Decimal, Binary, Hexadecimal, or Octal) you want to convert.
  2. Review the equivalent value in the other supported bases.
  3. Use the Copy button to quickly copy a specific result to your clipboard.
  4. Click Reset to clear all fields and start a new conversion with the hex to decimal converter.

Binary, decimal, octal, and hexadecimal conversion

Use this number base converter for binary-to-decimal, hexadecimal-to-decimal, octal, and reverse conversions. Enter a value in one supported base and compare the equivalent representations in the other fields.

Need the formula or convention behind this result? Read the calculator methods and assumptions.

Number Base Converter FAQs

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