What is the Number System Converter?
ToolsPopper's Number System Converter turns one decimal integer into three representations at once — binary (base 2), octal (base 8), and hexadecimal (base 16). Enter a whole number, click Calculate, and copy all three formats for computer science assignments, debugging, and quick base-switching.
All conversions run locally via JavaScript's toString with radix 2, 8, and 16. Your numbers never reach ToolsPopper servers.
When to convert between number systems
- CS and IT courses — submit binary, octal, and hex equivalents together
- Memory addresses — jump between decimal offsets and hex dumps
- Unix permissions — relate octal chmod values to binary bit patterns
- Color codes — connect decimal channel values to hex RGB components
How the Number System Converter works
Enter an integer. The tool validates whole-number input, then outputs three labeled lines: Binary, Octal, and Hex (uppercase A–F). Non-integers return a prompt to enter an integer.
How to convert decimal to binary, octal, and hex
- Type a whole integer in the input field.
- Click Calculate.
- Copy Binary, Octal, and Hex lines from the output.
- Convert another value — unlimited free use.
ToolsPopper vs Binary Hex Octal converters online
- Triple output in one click — no switching tabs between separate converters
- Unlimited free conversions — no premium multi-base bundles
- Private local math — server-based converters log IP; ToolsPopper does not
- No signup — instant access
- Uppercase hex — readable for assembly and color-code work