Ensure that Dec (Decimal) radio button is selected. Now type your decimal number. Next, select the Bin (Binary) radio button. This will convert the digit from Decimal to Binary.

Create a table or use an existing one. Type =DEC2BIN(A2, B2) into the cell you want to place the result. Then press the Enter key to see the result. To see the other results in the table, drag the ...

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.

Decimal numbers between 100 and 109 would be represented in BCD by the actual number + 156 (26*6). Numbers between 110 and 119 convert to BCD values of the actual number + 156 + 6.