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CGPA Calculator Guide

Learn exactly how to capture every course, convert grade scales, and read SGPA versus CGPA outputs. Use this guide when you need more than the quick start tips on the homepage.

CGPA formulas

Understand the weighted-average logic behind SGPA and CGPA so you can sanity-check the calculator manually.

SGPA formula

The semester grade point average (SGPA) is the weighted mean of all courses in a single academic term:

SGPA =
i=1 n (gradei × crediti)
i=1 n crediti

Where:

  • gradei = grade points earned in course i
  • crediti = credit weight assigned to course i
  • n = number of courses in the semester

CGPA formula

The cumulative grade point average (CGPA) combines all semesters by weighting each SGPA with the credits earned in that term:

CGPA =
j=1 m (SGPAj × TotalCreditj)
j=1 m TotalCreditj

Where:

  • SGPAj = semester GPA in term j
  • TotalCreditj = total attempted credits in term j
  • m = number of semesters combined in the CGPA

Sample SGPA calculation

Assume one semester with three courses on the 10-point scale:

Course Credits Letter grade Grade points Weighted score
Data Structures 4 A 8 4 × 8 = 32
Advanced Calculus 5 A+ 9 5 × 9 = 45
Academic Writing 3 B+ 7 3 × 7 = 21
Total 12 - - 98

Calculation:

SGPA = (32 + 45 + 21) ÷ 12 = 98 ÷ 12 = 8.17

Detailed workflow

1

Collect your records

Gather every course you plan to include along with credit values and the grades awarded. Convert percentages to the letter grade your institution recognizes.

2

Build semesters in order

Press "Add Semester" for each term, rename it so the timeline is clear, and enter every course with its credit weight. The calculator totals credits automatically.

3

Switch grading systems when needed

Toggle between 10-point and 4-point scales to match your university or preview how your CGPA appears on another scale. Existing grades convert instantly.

4

Interpret SGPA and CGPA results

Each semester card shows SGPA and earned credits. The summary section combines every term to display overall CGPA so you can confirm graduation eligibility or scholarship targets.

Worked examples

10-point semester snapshot

Enter credits and grades below to see how the calculator weights each course to produce the semester SGPA.

Course Credits Grade Grade points
Microprocessors 4 A+ 10
Signals & Systems 3 A 9
Numerical Methods 3 B+ 8
Professional Ethics 2 O 10

Weighted points: (4 × 10) + (3 × 9) + (3 × 8) + (2 × 10) = 102. Credits: 12. SGPA = 102 ÷ 12 ≈ 8.50.

Two-semester CGPA summary

Combine SGPA results across terms to confirm the cumulative GPA math before you enter your own history.

Term Credits earned SGPA Weighted points
Semester 1 20 8.2 20 × 8.2 = 164
Semester 2 18 7.8 18 × 7.8 = 140.4
Total 38 - 304.4

CGPA = (164 + 140.4) ÷ 38 = 304.4 ÷ 38 ≈ 8.01. Switching the calculator to the 4-point scale surfaces the equivalent ≈ 3.3.

Guide FAQ

Can I export results from the CGPA calculator?

You can print the page or copy the summary numbers into a spreadsheet. Export automation is on the roadmap, but the current tool keeps data private on your device.

How should I include pass/fail or audit courses in my CGPA?

If the course does not carry grade points, leave the grade blank so it will not affect your CGPA. Add a note beside the course title if you want to remember that it was pass/fail.

How do I convert percentages or letter grades into grade points?

Use the grade scale selector inside the calculator to match your university's system, then pick the closest letter grade. If your transcript lists percentages, rely on the official conversion chart from your registrar so the grade points reflect school policy.

What happens if I repeat or replace a course grade?

Enter the version of the course that counts toward your official GPA. Many universities exclude the earlier attempt, so remove it or set its credits to zero if the registrar replaces the grade.

How is CGPA different from GPA?

GPA typically refers to a single term or academic year, whereas CGPA averages every completed semester using credit-weighted SGPA values. Use CGPA when applications request your cumulative standing across your entire program.

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