Number Base Converter

Web MCP Ready

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)

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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.