⚡ Utility Tool
Number System Converter
Convert between Binary, Decimal, Octal & Hexadecimal instantly. Perfect for CS students & programmers.
Enter any value to convert
RESULTS
Binary
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Decimal
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Octal
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Hexadecimal
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Quick examples — click to load
How number systems work
2
Binary (Base 2) — uses only 0 and 1. Used internally by all computers and digital circuits.
8
Octal (Base 8) — digits 0–7. Used in Unix file permissions (e.g. chmod 755).
10
Decimal (Base 10) — the everyday number system we use. Digits 0–9.
16
Hexadecimal (Base 16) — digits 0–9 and A–F. Used in memory addresses, colors (#FF5733), and HTML.
Free Number System Converter — Binary, Decimal, Octal, Hex
This free online number system converter lets you instantly convert between all four major number bases used in computer science — Binary (Base 2), Octal (Base 8), Decimal (Base 10), and Hexadecimal (Base 16). Just type in any field and all other values update automatically.
Who uses this tool?
Engineering and computer science students across India use this tool daily for assignments, lab practicals, and exam preparation. It is especially useful for subjects like Digital Electronics, Computer Organization, and Data Structures.
Is this tool free?
Yes, completely free with no sign-up required. Works on mobile and desktop browsers.