Denary to binary conversion Method one One method used to convert a denary number into an 8-bit binary number is to mark down the bits needed to form the number in a placeholder grid.

First, convert the binary number to decimal or hexadecimal. Then, find the corresponding ASCII values of characters. Alternatively, you can use an online binary-to-text converter tool.

Warnings Excel will only produce binary numbers with up to 10 bits. This means that it can only convert decimal numbers greater than -513 and less than 512.