How to Convert Number Bases
01
Enter value in input field
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Select 'From' format (source)
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Select 'To' format (target)
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Result updates instantly
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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.