Base Converter
Convert between binary, octal, decimal, and hexadecimal in real-time. Essential tool for programming and computer science.
Base Converter
Binary Computer’s basic unit (0, 1)
Octal Unix file permissions (chmod 755)
Decimal Everyday numbers
Hex Color codes, memory addresses
What is Base Converter?
Base Converter is a tool that converts between Binary (base 2), Octal (base 8), Decimal (base 10), and Hexadecimal (base 16) in real-time. It allows you to quickly and accurately perform number base conversions essential for programming, computer science, and digital system work.
Key Features
- Real-time Conversion – Enter in any field and the other 3 fields convert instantly
- 4 Number Bases – Convert between binary, octal, decimal, and hexadecimal
- Input Validation – Shows errors for invalid values in each base
- One-click Copy – Copy each result directly to clipboard
- Browser-only – 100% processed in browser without server transmission
How to Use
- Select Base – Choose the input field for the number base you want to convert from.
- Enter Number – Type a number valid for that base.
- Auto Convert – Other 3 bases are automatically converted as you type.
- Copy Result – Click the copy button to save the result to clipboard.
Use Cases
- Programming – Bit operations, flag value calculations, memory address verification
- Web Development – Analyzing and converting color codes (#FF5733)
- System Administration – Unix file permission (chmod) calculations
- Networking – IP address and subnet mask calculations
- Education – Learning computer science, understanding number bases
- Embedded Development – Register values, hardware address configuration
Privacy Protection
This tool runs 100% in your browser. Numbers you enter are not sent to any server, and all conversions are processed only on your device.
Frequently Asked Questions
What do A-F mean in hexadecimal?
Hexadecimal uses 0-9 and A-F to represent 16 values. A=10, B=11, C=12, D=13, E=14, F=15. For example, hexadecimal ‘FF’ equals 255 in decimal.
Where are number bases used in programming?
Binary is used for bit operations and flags, octal for Unix file permissions (chmod 755), and hexadecimal for color codes (#FFFFFF), memory addresses, and MAC addresses.
Can I convert large numbers?
Accurate conversion is possible within JavaScript’s safe integer range (about 9 quadrillion). Numbers larger than this may lose precision.
How do I convert negative numbers?
This tool is optimized for positive integer conversion. To represent negative numbers in binary, you need to calculate two’s complement separately.