How to Calculate GPA?

If you want to know how to calculate GPA, then this article is for you. Here we will discuss some mathematics formulas and GPA calculation with some examples.

Grade Point Average Formula

The GPA is equal to the sum-up of all the credit hours (C) multiply by grade points (G) and then divide by the sum of credit hours.

(C1 × G1) + (C2 × G2) + ... + (Cn × Gn)
(C1 + C2 + ... + Cn)

C = Credit Hours (The hours assigned to a particular course)
G = Grade Points (You can find it from the GPA Scale Table)

Basically, there are three operations that we need to perform respectively.

  • Multiplication
  • Addition
  • Division

Now follow the step-by-step instructions to calculate the GPA.

  1. Firstly, find the grade points from GPA Scale Table.
  2. Multiply each credit hour and grade point and then sum up all the resultant values.
  3. After that, find the sum of all the credit hours.
  4. Lastly, divide step 3's value with step 2's value.

Finally, you will get the final Grade Point Average.

Now let's take some examples to understand the above all points step by step.

Example 1:

Suppose John completed 3 courses: Maths with "A" grade, Chemistry with "B+" grade, and Physics with "B" grade. Find out the GPA.

Course Grade Credit Hours Grade Points
Maths A 3 3 × 4 = 12
Chemistry B+ 4 4 × 3.33 = 13.32
Physics B 2 2 × 3 = 6
Total - 9 31.32
GPA (31.32 / 9) = 3.48

Now let's figure out how it is calculated.

Firstly, we will use GPA Scale Table to convert letter grades into grade points and then apply them to the formula.

You can see the full calculation below:

Example 1

Example 2:

Let's take 3 courses: Computer Lab (A+ grade), Algebra (B- grade), and English (C grade). Find out Grade Point Average.

Course Grade Credit Grade Points
Computer Lab A+ 1 1 × 4.33 = 4.33
Algebra B- 3 3 × 2.67 = 8.01
English C 3 3 × 2 = 6
Total - 7 18.34
GPA (18.34 / 7) = 2.62

Let's figure out the GPA using the formula.

Example 2

Now we are clear with how to calculate GPA. Just perform simple multiplication, addition, and division one by one. That's it.

But you don't need to do this manual calculation all the time. Because it's a very lengthy process. Even more, it will take more time when there are more than 7 or 8 courses. Instead of doing this, use our GPA calculator to save your time and effort. Also, our tool will give you 100% accurate results.