Just type numbers into the boxes below and the calculator will automatically calculate the distance between those 2 points. Can easily determine the distance between 2 cities as well. The distance between two points calculation formula is similar to the right triangle rule where the squared hypotenuse is equal to the sum of the squares of the other two sides.
This method will plot movable points.
Move ab around to see the distances change. The Y-position of the green dot is equivalent to the measurement of the blue line. Distance between two points 3 42 2 32 3 - 4 2 - 2 - 3 2. Move ab around to see the distances change.