How it works
Each digit is multiplied by the base raised to its position, counting from zero on the right, and the results are added.
Frequently asked questions
Why does hexadecimal use letters?
Base 16 needs sixteen digits, so A–F stand for 10–15.
Number Base Converter
Convert between binary, octal, decimal and hexadecimal.
Your details
Decimal
255
Binary
11111111
Octal
377
Hexadecimal
FF