Number Base Converter
Convert between binary, decimal, hexadecimal, and octal number systems online. Free number base converter for programmers and students.
Quick Examples
About Number Base Conversion
Binary (Base 2): Uses only 0 and 1. Used in computing.
Octal (Base 8): Uses digits 0-7. Used in Unix file permissions.
Decimal (Base 10): Standard number system using 0-9.
Hexadecimal (Base 16): Uses 0-9 and A-F. Used in colors, memory addresses.
How to Use Number Base Converter
Enter your values
Open Number Base Converter and enter the values you want to calculate or convert.
Select units or options
Choose the input and output units, formats, or calculation parameters.
View results instantly
Results are calculated in real-time as you type — no submit button needed.
Copy or use the result
Copy the calculated result or use it directly in your work.
Frequently Asked Questions
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