A midpoint is defined as a point that is exactly in the middle between two other points. The midpoint between two numbers is the number exactly in the middle of the two numbers. Calculating the midpoint is the same thing as calculating the average of two numbers. Therefore, you can calculate the midpoint between any two numbers by adding them together and dividing by two.
Determine the two numbers whose midpoint you want to find. For example, assume you want to find the midpoint between the numbers 2 and 32.
Add the two numbers together. Continuing the same example, 32 + 2 = 34.
Divide the product by 2. Continuing the same example, 34 / 2 = 17. This figure represents the midpoint between the two numbers.