Number Base Converter

Overview

• Converts numbers between binary, octal, decimal, and hexadecimal.

• Uses BigInt internally, so it accurately converts numbers with many digits, even where JavaScript's Number type would lose precision.

• Specify the base of the number you enter, and the result in every other base is displayed at once.

Usage

1. 1

   Select the base (2/8/10/16) of the number you are entering in "From base".

2. 2

   Enter the number in the input field.

3. 3

   Click "Convert" to see the result in binary, octal, decimal, and hexadecimal.

Example

255 (decimal)

11111111 / 377 / 255 / FF

Use Cases

• Checking decimal, binary, and hexadecimal values against each other when doing bit manipulation or flag management in code

• Converting a specific base notation, such as a color code (hex) or file permission (octal), into decimal to understand its meaning

• Converting between bases without losing precision when working with a system that handles large numbers

FAQ

Notes

• A negative number can be entered with a leading "-".

• Hexadecimal accepts lowercase a-f, but the result is always displayed in uppercase.

• Entering a character that doesn't fit the specified base (for example, a digit of 2 or more for binary) results in an error.