There are two ways to calculate your Grade Point Average,
 For courses taken after July 1st, 2013, calculate GPA by course credits
 For courses taken prior to July 1st, 2013, calculate GPA by course hours
How to calculate your GPA by Course Credits
NOTE: Use this calculation only if your courses were taken after July 1st, 2013

Convert the letter grade for each course to a Grade Point Value by referring to the Grading System chart. (Note: the following notations are not included in the GPA calculation: W – Withdraw, AU – Audit, P – Pass, H – Honours, IN – Incomplete)

Calculate the total number of Grade Points for each course by multiplying the course’s Grade Point Value by the number of course credits.

Calculate the sum of the attempted course credits for the term. Add up the total number of Total Grade Points.

Finally, calculate the Grade Point Average by dividing the total number of grade points by the sum of the attempted credits.
Example of GPA calculation by course credits:
Course  Grade  Grade Point Value  Course Credits  Total Grade Points 
JRSB 101  C  2.0  3  6.0 
JRSB 102  C+  2.3  3  6.9 
JRSB 103  B  2.7  3  8.1 
JRSB 104  F  0.0  3  0.0 
12 Totals Credits  21 Total Grade Points  
21 (Total Grade Points) ÷ 12 (Total Credits) = 1.8 GPA 
The GPA is calculated in two different circumstances:
 Term GPA (TGPA) – The TGPA for each term is calculated by dividing the sum of grade points achieved in a term by the sum of all credits attempted in that term.
 Cumulative GPA (CGPA) – The CGPA is calculated by dividing the sum of total grade points achieved at NAIT by the sum of all credits attempted at NAIT.
How to calculate your GPA by Course Hours
NOTE: Use this calculation only if your courses were taken prior to July 1st, 2013
Percentage  Letter Grade  Grade Point  Descriptor 
85–100  A  4.0  Excellent 
80–84  A  3.7  Excellent 
77–79  B+  3.3  Good 
73–76  B  3.0  Good 
70–72  B  2.7  Good 
67–69  C+  2.3  Satisfactory 
63–66  C  2.0  Satisfactory 
60–62  C  1.7  Satisfactory 
55–59  D+  1.3  Marginal 
50–54  D  1.0  Marginal 
0–49  F  0.0  Fail 
(The A+ designation was in effect from July 2003–June 2008. It was removed July 2008 and reinstated July 2013.)
 Convert the Alpha Grade or % Mark to a Grade Point value by referring to the Grading Chart above. (Note: courses with a grading basis of HPF (Honours/Pass/Fail) and the following notations are not included in the GPA calculation: W – Withdraw, WF – Withdraw Fail, AU – Audit)
 For each course, multiply the Grade Point value by the Attempted Hours.
 Calculated the sum of the Attempted Hours for all the courses. Add up the totals you received in the Step 2 calculations.
 Finally, calculate the Grade Point Average (GPA) by dividing the sum from Step 2 by the Total Attempted Hours.
Example of GPA Calculations by course hours:
Course  Earned Credit  Alpha Grade  % Mark  Grade Point  Attempted Hours  Grade Point x Hours 
BUS 119  5.0  C  65  2  80  (80×2)=160 
BUS 207  4.0  A  88  4  64  (64×4)=256 
BUS 322  0.0  F  40  0  48  (48×0)=0 
BUS 367  5.0  B  75  3  80  (80×3)=240 
272 Total Attempted Hours  656 Total  
656 (Grade Points × Hours) ÷ 272 (Total Attempted Hours) = 2.4 GPA 
When calculating the average for each of the academic years, you need to apply the methods mentioned above for all courses of all semesters for that year rather than one semester at a time. Marks are cumulative.