Base Converter | Binary, Octal, Decimal, Hex
Convert numbers between Binary (2), Octal (8), Decimal (10), and Hexadecimal (16). Supports large integers (BigInt) and real-time conversion. Fast, accurate, and 100% browser-based.
How to Use This Tool
- 1
Select your input base (Binary, Octal, Decimal, or Hex).
- 2
Type the number you want to convert in the input field.
- 3
Watch as the tool instantly converts your number to all other bases simultaneously.
- 4
Click the 'Copy' button next to any result to use it.
Use Cases & Examples
Systems Programming
Convert memory addresses (Hex) to decimal or bitmasks (Binary) for low-level debugging.
Network Engineering
Calculate IP subnets, MAC addresses, or bitwise operations involving binary and hex conversions.
Education & Learning
Visualize how numbers are represented in different bases for computer science education.
Web Development
Decode hex color codes or binary data streams during web development.
Number Systems & Radix
Positional notation systems represent numbers using a specific base (radix).
Binary (Base 2) is the foundation of digital logic.
Hexadecimal (Base 16) provides a human-friendly representation of binary data.
This tool uses arbitrary-precision arithmetic (BigInt) to handle numbers larger than 2^53.
Frequently Asked Questions
Q.Does this support very large numbers?
A. Yes. We use JavaScript's BigInt to support arbitrarily large integers, limited only by your browser's memory.
Q.Can I convert fractional numbers?
A. Currently, this tool focuses on integer conversions. Fractional numbers (floating point) are not supported in this version.
Q.What characters are allowed in each base?
A. Binary uses 0 and 1. Octal uses 0-7. Decimal uses 0-9. Hexadecimal uses 0-9 and A-F.
Q.How do I convert Hex to Binary?
A. Simply type in the 'Input Number' field. The tool automatically detects the input base based on your selection and updates all other bases instantly.
Related Tools
Explore more developer tools
Binary Encoder & Decoder | Text to Binary Converter
Convert text to binary (0s and 1s) or decode binary to text with UTF-8 support—online, free, and secure.
Hex Encoder & Decoder | Text to Hexadecimal Converter
Convert text to hexadecimal (base-16) or decode hex to text with UTF-8 support.
Hash Generator | MD5, SHA-1, SHA-256, SHA-512
Compute MD5, SHA-1/256/512 hashes instantly—private, in-browser.
ASCII Converter | Text to ASCII Code Converter
Convert text to ASCII codes or decode ASCII to text instantly in your browser.