How to Calculate TU BCA CGPA

The Bachelor of Computer Application (BCA) at Tribhuvan University follows a strict credit-based grading system. Many students get confused about how their semester grades (SGPA) turn into their final degree grade (CGPA). This guide explains the exact math behind it.

1. Understand the Credit Hours

In the TU BCA program, not all subjects are equal. Each subject is assigned a Credit Hour (usually 3 or 4 credits). This weight depends on the importance and workload of the subject.

• Heavy subjects: 4 Credit Hours (e.g., C Programming, Java)
• Lighter subjects: 3 Credits (e.g., Sociology), 2 Credits (Projects)
• Total Credits: 126 Credit Hours across 8 semesters.

2. The Formula

Your CGPA is not simply the average of your 8 semester GPAs. It is a weighted average.

Where:

• SGPA: Your Grade Point Average for a specific semester.
• Semester Credits: The total credit hours you took in that semester (usually 15-16).
• Total Credits: The sum of all credits completed so far.

3. Why does this matter?

Because credits vary, a high grade in a 4-credit subject boosts your CGPA much more than a high grade in a 2-credit subject. Failing a 4-credit subject hurts your score significantly more.

4. Calculation Example

Let's say in your First Semester (total 16 credits), you got an SGPA of 3.20.

In your Second Semester (total 15 credits), you got an SGPA of 3.60.

Wrong Way: (3.20 + 3.60) / 2 = 3.40 ❌

Right Way (Weighted):

• Sem 1 Points: 3.20 × 16 = 51.2
• Sem 2 Points: 3.60 × 15 = 54.0
• Total Points: 105.2
• Total Credits: 16 + 15 = 31
• CGPA: 105.2 / 31 = 3.39 ✔️

In this case, the difference is small, but over 8 semesters, the "Wrong Way" can be off by 0.1 or 0.2, which is huge for grading.

Use the Tool

Instead of doing this math manually, use our dedicated calculator designed specifically for the TU BCA credit structure.

Grading Scale Refresher

Remember the TU grading scale allows for ranges.

Letter Grade	GPA Value
A	4.0
A-	3.7
B+	3.3