Here we will tell you what 1001 binary is converted to decimal and then show you how
we converted it. 1001 binary converted to decimal is as follows:
1001 = 9
Here is how to convert 1001 binary to decimal:
Step 1) Note that there are 4 digits in 1001. That means there are 4 positions  the first position is the digit furthest to the right.
Step 2) Multiply the number in the first position by 2^{0} (=1), the second position by 2^{1} (=2), the third position by 2^{2} (=4) and so on. (See Table 1 for longer list.)
Here is the math for the 4 digits in 1001:
1 x 1 = 1 0 x 2 = 0 0 x 4 = 0 1 x 8 = 8
Step 3) Finally, add up the answers from Step 2 to get the answer to 1001 binary converted to decimal:
1 + 0 + 0 + 8 = 9
Once again, the answer is as follows:
1001 = 9
Convert 1010 binary to decimal.
Here is the next number on our list that we have detailed instructions for how to convert from binary to decimal.

