🔢 Number Base Converter
Convert between binary, octal, decimal, and hexadecimal. Edit any field — all others update instantly.
About Number Base Converter
Working with different number systems is a daily task for programmers, students, and engineers. This converter handles binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16) simultaneously — just type a value in any field and all the others update instantly. No need to remember conversion formulas or do it by hand.
This is useful for reading hex color codes, memory addresses, Unix file permissions (octal), and bit flags. Enter a hex value from a color picker and see its decimal equivalent, or convert a decimal number to binary to understand how it's stored in memory. Fast, clean, and always accurate.
Binary (base 2)
Octal (base 8)
Decimal (base 10)
Hexadecimal (base 16)