Convert numbers instantly between binary, decimal, hexadecimal, and octal - all four update together as you type.
Convert numbers between decimal (base 10), binary (base 2), hexadecimal (base 16), and octal (base 8) — the number systems most commonly used in programming, computer science, and digital electronics.
Example: decimal 255 is 11111111 in binary, FF in hexadecimal, and 377 in octal — enter a value in any base and the rest convert automatically.
A number base (or radix) determines how many unique digits are used before carrying over. Decimal (base 10) is what we use daily. Binary (base 2) uses only 0 and 1, and is the foundation of digital computing. Hexadecimal (base 16) uses 0-9 and A-F, commonly used in programming for compact byte representation. Octal (base 8) uses digits 0-7.
A number base (or radix) determines how many unique digits are used before carrying over.
Binary (base 2) uses only 0 and 1, and is the foundation of digital computing.
Hexadecimal (base 16) uses 0-9 and A-F, and is commonly used in programming for compact byte representation.
Octal (base 8) uses digits 0-7.
Yes — binary, octal, decimal, and hexadecimal are all shown at once, and editing any one of them instantly recalculates the other three to match.