Number Base Converter

Input

From

Convert between text, binary, decimal, hexadecimal, octal, and ASCII. Single tool handles all base conversions. Real-time conversion as you type. Perfect for programmers, students, data analysis.

How to Convert Number Bases

Enter value in input field

Select 'From' format (source)

Select 'To' format (target)

Result updates instantly

Click Copy to use converted value

Key Features

All Base Conversions

Binary (base-2): 0s and 1s. Decimal (base-10): 0-9. Hexadecimal (base-16): 0-9, A-F. Octal (base-8): 0-7. Text/ASCII: character encoding.

Instant Conversion

Live updates as you type. No process button. Validates input format automatically. Shows error for invalid characters.

Privacy & Security

All conversions happen in browser using JavaScript. Zero server uploads.

Frequently Asked Questions

What's the difference between ASCII and Text conversion?

ASCII converts each character to decimal code (A=65). Text treats input as string and converts to binary/hex representation. Use ASCII for character codes, Text for encoding strings.

Why does my hexadecimal input show an error?

Hex uses 0-9 and A-F only. No 0x prefix needed. Invalid: 0x1A2B or G12. Valid: 1A2B.