Tools / Number Base Converter

Number Base Converter

Convert numbers between binary, octal, decimal, hexadecimal, and custom bases (2-36). Grouped digits for readability with instant results.

7,800 AI Tokens Used
Feb 6, 2026 Created
mathdeveloperconverter
Categories
Valid digits: 0-9
BINBinary (Base 2)
1111 1111
Raw: 11111111
OCTOctal (Base 8)
377
Raw: 377
DECDecimal (Base 10)
255
HEXHexadecimal (Base 16)
FF
Raw: FF
About Number Bases

Binary (Base 2): Used by computers. Only 0s and 1s.
Octal (Base 8): Digits 0-7. Common in Unix file permissions.
Decimal (Base 10): Standard human counting system, digits 0-9.
Hexadecimal (Base 16): Digits 0-9 and A-F. Widely used in programming for colors, memory addresses, etc.

This tool supports integer conversions. Very large numbers may lose precision due to JavaScript's number limits.

All conversions happen locally in your browser.

How This Tool Was Built

This tool was created entirely by AI. Here's the exact prompt used to generate it:

Prompt Used 
Create a Number Base Converter tool with these features:

1. Input with source base selection (2, 8, 10, 16, or custom 2-36)
2. Simultaneous conversion to binary, octal, decimal, hexadecimal
3. Copy button for each output
4. Validate input against selected base
5. Grouped digits for readability
6. Quick swap buttons between bases

Make it colorful with purple as the accent color.
AI
Claude AI Model
#
7,800 Tokens Used
100%
AI-Generated Code Origin