🔢 Free Number Base Converter

Convert between binary, octal, decimal, and hexadecimal number systems instantly. Perfect for programmers, computer science students, and developers!

Number Base Converter

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, A-F

Conversion Results

0
Binary Bits
0
Hex Length
0
Decimal Value
✓
Valid Number

Number Examples

Small Number
Binary: 1010
Octal: 12
Decimal: 10
Hex: A
Basic conversion example
Medium Number
Binary: 11111111
Octal: 377
Decimal: 255
Hex: FF
8-bit maximum value
Large Number
Binary: 10000000000
Octal: 2000
Decimal: 1024
Hex: 400
Power of 2 example
Negative Number
Binary: 1111111111111111
Octal: 177777
Decimal: 65535
Hex: FFFF
16-bit maximum value

Why Choose Our Number Base Converter?

Professional number conversion features

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Multiple Bases

Convert between binary (2), octal (8), decimal (10), and hexadecimal (16) number systems.

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Real-time Conversion

Instant conversion as you type with accurate results and immediate feedback.

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Input Validation

Validate input format and highlight errors for each number system.

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Detailed Statistics

View bit count, hex length, decimal value, and validation status.

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Copy All Results

Copy all conversion results to clipboard for use in your projects.

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Privacy First

All conversion happens locally in your browser. No data is sent to servers.