Hex to Decimal Converter
Convert hexadecimal to decimal, binary, and octal instantly. Free online number base converter with real-time conversion. Runs entirely in your browser.
Frequently Asked Questions
How do I convert hex to decimal?
Enter a hexadecimal number (e.g., FF) and the tool instantly shows the decimal equivalent (255). The conversion uses positional notation: each hex digit represents a power of 16. This tool also shows binary and octal equivalents simultaneously.
What is hexadecimal?
Hexadecimal (base 16) uses digits 0-9 and letters A-F. It is widely used in computing because each hex digit represents exactly 4 binary bits, making it a compact way to represent binary data. Memory addresses, color codes, and byte values all use hex.
Can I convert between all number bases?
Yes. This tool converts between hexadecimal (base 16), decimal (base 10), binary (base 2), and octal (base 8). Enter a value in any field and the others update instantly.
What is the maximum value supported?
This tool uses JavaScript's native number parsing which handles integers up to 2^53-1 (9,007,199,254,740,991) precisely. For most programming use cases including 32-bit and 64-bit values, this range is sufficient.
Is this tool free?
Yes. All KappaKit tools are free, run in your browser, and require no signup or account.