This short ebook presents the calculation for determining the true size of our universe. The actual size of the universe is very small, compared to what most scientists believe. The maximum physical distance between any two points in the universe is about: 0.272 millimeters. This is the true size, or diameter, of our entire universe. Let that sink in for a minute. Our universe literally blinks, off and on, more than one trillion times each second. All distance is an illusion. Sequential time is an illusion. Our universe is not expanding – that too, is an illusion. This short ebook presents the math that calculates the maximum distance between any two points in our universe.