/base-converter

Number Base Converter

Convert numbers dynamically between Binary, Octal, Decimal, and Hexadecimal representations instantly as you type.

Base Converter Dashboard
Decimal (Base 10)
Hexadecimal (Base 16)
Octal (Base 8)
Binary (Base 2)
ASCII Character: None (Enter number)

Frequently Asked Questions

What are number base systems?
Bases represent the total count of unique numeric characters used to represent values. Decimal uses 10 digits (0-9), Hexadecimal uses 16 digits (0-9 and A-F), Octal uses 8 digits (0-7), and Binary uses 2 digits (0 and 1).
What is ASCII?
The American Standard Code for Information Interchange (ASCII) is a character encoding standard for electronic communication. Numeric values between 32 and 126 map to standard letters, numbers, and symbols.
Why does the input box highlight red?
If you type letters/digits invalid for a base (for instance, typing `9` in binary or `G` in hex), the input will turn red to indicate a parsing syntax violation.
Is any calculation performed online?
No. All number parsing and conversions are performed locally in your browser tab using native JavaScript calculations, guaranteeing speed and privacy.