Number Base Converter
Convert any number between the four most common number systems: binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16). Enter in any base and see all four representations at once. Essential for programmers, computer science students, and anyone working with low-level systems.
Binary (2)
0b11111111
Octal (8)
0o377
Decimal (10)
255
Hexadecimal (16)
0xFF
How to Use Number Base Converter
- 1Enter your number in the input field
- 2Select the input base
- 3All four base representations appear
- 4Copy any result individually
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Number Base Converter runs entirely in your browser. Your files and data are never uploaded to any server, never stored, and never shared. Everything happens locally on your device using secure browser APIs.
No server uploadNo account required100% freeWorks on all devices
Frequently Asked Questions
Why do programmers use hexadecimal?
Hex (base 16) compactly represents binary data. One hex digit = 4 bits. Hex is used for memory addresses, colors (#RRGGBB), and encoding.
Why Use This Tool?
Files never leave your device
No upload to any server
Instant processing in browser
100% free, no account needed
Tags
number base converterbinary decimal hexbase converterhexadecimal converteroctal converter
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