Sri LankaPublic4.0 scale

Colombo GPA Calculator

Free Colombo CGPA calculator — semester GPA, running CGPA, and percentage planning on Sri Lankan University GPA (4.0). Nothing you type leaves your browser.

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Step-by-step walkthrough

How to use the Colombo CGPA calculator

The Colombo tool above is locked to Sri Lankan University GPA (4.0). Enter your transcript row by row — course name, credits, and letter grade — and the semester GPA updates instantly. Maximum on this scale is 4.0.

Colombo calculator preview — your grades use Sri Lankan University GPA (4.0). Results update live in the tool above.
  1. 1

    Select Semester GPA, CGPA, or Percentage

    Use Semester GPA for the current term at Colombo, CGPA for your full running average across semesters, and Percentage only when you need a rough conversion figure for forms.

  2. 2

    Add courses from your transcript

    Press "+ Add Course" for each subject on your Colombo registration. Course names are optional labels — credits and grades drive the calculation.

  3. 3

    Enter credits and letter grades

    Type credit hours exactly as on your portal, then choose the letter from the dropdown. Grades are pre-mapped to Sri Lankan University GPA (4.0) — out of 4.0 (A+ = 4.00).

  4. 4

    Read the live result bar

    The highlighted score at the bottom updates as you edit rows. Toggle Pro mode to plan target grades for next semester without leaving the page.

Worked example

  • Nursing Fundamentals4 cr · A+ (4.00 pts)
  • STPM Mathematics3 cr · A- (3.70 pts)

((4 × 4.00) + (3 × 3.70)) ÷ 7 = 3.87

Semester GPA: 3.87 / 4.00

Everything you enter stays in your browser tab. We do not store Colombo course names, credits, or grades on any server — close the tab and the data is gone.

Last updated: September 2026 · Public · Sri Lanka

About the Colombo CGPA calculator

Sri Lanka's oldest university — semester GPA and cumulative GPA on a 4.0 scale. This CGPA calculator is tuned for Sri Lankan University GPA (4.0) (4.0). Nothing is stored on our servers; the math runs locally in your browser.

Spotted a wrong boundary? Send us your handbook link or browse the Sri Lanka university hub.

How to use this calculator

  1. Open Semester GPA when you are working with one term only; choose CGPA (or cumulative CGPA) when several semesters are finished.
  2. Add each courses with the credit units shown on your Colombo portal or registration slip.
  3. Select the letter or points from the dropdown — we already mapped them to the 4.0 scale.
  4. Read the live result on the right. Toggle percentage mode only if your department published a conversion rule.

Colombo grading system

Sri Lankan University GPA (4.0) is what Colombo prints on most transcripts. The top band is A+ (4.00 points). A fail (F) usually counts as zero quality points until you pass the retake.

The math behind semester GPA and cumulative CGPA is the same across most universities — see our CGPA formula guide for a worked example. For broader planning tips, read the complete CGPA guide on the homepage.

Percentage conversion

Modern transcripts show 4.0 GPA. Older percentage-only marksheets need a separate conversion from the examinations branch.

Related Sri Lanka calculators

Public students in Sri Lanka often compare grades with peers at other campuses. You may also want the Moratuwa CGPA calculator, Peradeniya CGPA calculator, and USJ CGPA calculator. View every Sri Lanka tool on the Sri Lanka university hub or the full full university directory.

Frequently asked questions

How do I calculate CGPA at Colombo?
Multiply each Colombo course grade point by its credit hours, add the products, and divide by total credits. That weighted average is what appears on most University of Colombo transcripts under Sri Lankan University GPA (4.0).
How do I convert Colombo CGPA to percentage?
Modern transcripts show 4.0 GPA. Older percentage-only marksheets need a separate conversion from the examinations branch.
How do I combine semester GPAs into CGPA?
Weight each semester by its credit load: (SGPA₁ × credits₁ + SGPA₂ × credits₂ + …) ÷ total credits. CGPA mode on the calculator adds semester rows so you do not have to re-enter every subject.
What is the highest grade point on the Colombo scale?
On Sri Lankan University GPA (4.0), the ceiling is 4.00 quality points (A+). Hitting that across every credit is rare — one failed lab can pull the average down until you clear it.
Is this Colombo CGPA calculator free?
Yes. No account, no app install, and we do not upload your grades. Close the tab and the data is gone.
Who maintains this page?
My CGPA Calculator is run by students and alumni who got tired of generic CGPA widgets that ignore local scales. If you spot a wrong boundary for University of Colombo, use the contact form with a link to the official handbook — we fix scales in batches.

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