How to Convert 128 to Binary
Here we will show you step-by-step how to convert the decimal number 128 to binary.
First, note that decimal numbers use 10 digits (0, 1, 2, 3, 4, 5, 6, 7, 8, and 9) and binary numbers use only 2 digits (0 and 1).
As we explain the steps to converting 128 to binary, it is important to know the name of the parts of a division problem. In a problem like A divided by B equals C, A is the Dividend, B is the Divisor and C is the Quotient.
The Quotient has two parts. The Whole part and the Fractional part. The Fractional part is also known as the Remainder.
Step 1) Divide 128 by 2 to get the Quotient. Keep the Whole part for the next step and set the Remainder aside.
Step 2) Divide the Whole part of the Quotient from Step 1 by 2. Again, keep the Whole part and set the Remainder aside.
Step 3) Repeat Step 2 above until the Whole part is 0.
Step 4) Write down the Remainders in reverse order to get the answer to 128 as a binary.
Here we will show our work so you can follow along:
128 / 2 = 64 with 0 remainder
64 / 2 = 32 with 0 remainder
32 / 2 = 16 with 0 remainder
16 / 2 = 8 with 0 remainder
8 / 2 = 4 with 0 remainder
4 / 2 = 2 with 0 remainder
2 / 2 = 1 with 0 remainder
1 / 2 = 0 with 1 remainder
Then, when we put the remainders together in reverse order, we get the answer. The decimal number 128 converted to binary is therefore:
So what we did on the page was to Convert A10 to B2, where A is the decimal number 128 and B is the binary number 10000000. Which means that you can display decimal number 128 to binary in mathematical terms as follows:
12810 = 100000002
Decimal to Binary Converter
Need another decimal number as a binary number? How to convert 128 to binary is not all we know. Convert another decimal to binary below:
How to Convert 129 to Binary
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