Number System Converter
Convert numbers between binary, octal, decimal, and hexadecimal instantly.
How to Use the Number System Converter
1
Enter Number
Type the number you want to convert in any base.
2
Select Base
Choose the base of your input number (binary, octal, decimal, or hex).
3
Get Results
Click Convert to see the number represented in all four bases at once.
Frequently Asked Questions
Binary (base-2) uses digits 0-1. Octal (base-8) uses digits 0-7. Decimal (base-10) uses digits 0-9. Hexadecimal (base-16) uses digits 0-9 and letters A-F. Each system represents numbers using a different base.
To convert to decimal, multiply each digit by its place value (base^position). To convert from decimal to another base, repeatedly divide by the base and read remainders in reverse. This tool does it automatically.
Binary is the native language of computers. Octal and hexadecimal are used as human-friendly representations because they're more compact than binary while preserving the bit pattern. Hexadecimal maps each nibble (4 bits) to one character.
Yes, this number system converter is completely free. All conversion is done locally in your browser with no server uploads.
Ad