To understand how to convert a number from base two to base ten, the easiest way is to do it through an example - convert the number from base two, 101 0011₍₂₎, to base ten:

• Write bellow the binary number in base two, and above each bit that makes up the binary number write the corresponding power of 2 (numeral base) that its place value represents, starting with zero, from the right of the number (rightmost bit), walking to the left of the number, increasing each corresponding power of 2 by exactly one unit each time we move to the left:

• powers of 2:	6	5	4	3	2	1	0
  digits:	1	0	1	0	0	1	1

• Build the representation of the positive number in base 10, by taking each digit of the binary number, multiplying it by the corresponding power of 2 and then adding all the terms up:
  

  101 0011₍₂₎ =

  ---

  (1 × 2⁶ + 0 × 2⁵ + 1 × 2⁴ + 0 × 2³ + 0 × 2² + 1 × 2¹ + 1 × 2⁰)₍₁₀₎ =

  ---

  (64 + 0 + 16 + 0 + 0 + 2 + 1)₍₁₀₎ =

  ---

  (64 + 16 + 2 + 1)₍₁₀₎ =

  ---

  83₍₁₀₎

• Binary unsigned number (base 2), 101 0011₍₂₎ = 83₍₁₀₎, unsigned positive integer in base 10