Number Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal formats with big integer support.
Web MCP ReadyAI agents can call this tool directly — no page scraping
Big IntegerLive Conversion4 Number Bases
Supports decimal, hex (0x), binary (0b), and octal (0o) formats. Handles big integers.
Conversions
Enter a number to see conversions
Quick Reference
0b
Binary
Base 2 (0, 1)
0o
Octal
Base 8 (0-7)
10
Decimal
Base 10 (0-9)
0x
Hexadecimal
Base 16 (0-9, A-F)
Your data stays yours
100% local
Everything runs in your browser
Zero uploads
Files are never sent to a server
No sign-up
Free to use, no account needed
Number Base Converter FAQ
Answers to the most common questions about using this tool.
Is this tool free to use?
Yes — every ConvTop tool is 100% free, with no sign-up, no limits and no watermark.
Is my data safe with this tool?
Yes. Everything runs locally in your browser — your input never leaves your device, so sensitive data stays private.
Related Tools
Password Generator
Generate secure random passwords with custom length and character sets
Diff Checker
Compare text and JSON differences with inline and side-by-side view
Code to Image
Convert code snippets to beautiful images with syntax highlighting
Cron Generator
Generate and parse cron expressions with human-readable descriptions
JWT Decoder
Decode and verify JWT tokens easily
Binary Converter
Convert text to binary and vice versa
Regex Tester
Test regular expressions with real-time match highlighting
Hash Generator
Generate MD5, SHA1, SHA256, SHA384, SHA512 hashes from text