Calculate CGPA
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TCD CGPA Calculator

Free TCD CGPA calculator — calculate semester GPA, cumulative CGPA, and convert CGPA to percentage using Trinity College Dublin's official grading system. No signup required.

Grading system locked to ECTS Grading Scale (European)
StandardPro ✦
Course Name
Credits
Grade
Semester GPA
0.00/ 4.00
View full grading table for ECTS Europe

ECTS Grading Scale (European)

MarksGradePoints
90-100A (Excellent)4.00
80-89B (Very Good)3.50
70-79C (Good)3.00
60-69D (Satisfactory)2.50
50-59E (Sufficient)2.00
Below 50F (Fail)0.00

Step-by-step walkthrough

How to use the TCD CGPA calculator

Below is a visual guide for the TCD calculator. It shows exactly where to type course data, how grades map through ECTS Grading Scale (European), and how your running result appears — no spreadsheet required.

TCD calculator preview — your grades use ECTS Grading Scale (European). Results update live in the tool above.
  1. 1

    Select Semester GPA, CGPA, or Percentage

    Use Semester GPA for the current term at TCD, 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 TCD 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 ECTS Grading Scale (European) — out of ECTS (A (Excellent) = 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

  • Calculus I4 cr · A (Excellent) (4.00 pts)
  • Artificial Intelligence3 cr · B (Very Good) (3.50 pts)

((4 × 4.00) + (3 × 3.50)) ÷ 7 = 3.79

Semester GPA: 3.79 / 4.00

Your data never leaves your device. The tool runs locally in JavaScript — ideal for quick checks on a public campus network without sharing personal results online.

Last updated: September 2026 · Public · Ireland

About the TCD CGPA Calculator

Ireland's top university using ECTS-compatible grading for international mobility.

Trinity College Dublin (TCD) — Ireland's oldest university — uses ECTS-compatible grading with A–F letters on module transcripts, alongside traditional Irish percentage marks for many programmes. Final honours degrees may still reference UK-style classification (First, 2:1, etc.) depending on programme. This calculator supports ECTS letter credit-weighted averages for modules graded on the European A–F scale. Wrong scale? Tell us — or browse more Ireland calculators.

What TCD students should know

Trinity's historic campus hosts programmes from liberal arts to engineering with varying assessment styles. ECTS credits facilitate Erasmus mobility — exchange grades appear on transcripts with ECTS letters. Students applying to UK or EU graduate schools should provide Trinity's official transcript and diploma supplement rather than self-converted GPAs.

How to use this calculator

  1. Download module marks, ECTS credits, and letter grades from Trinity's my.tcd.ie portal.
  2. Enter ECTS letter grades (A–F) with corresponding credits for each module.
  3. Compute weighted semester and cumulative averages using the ECTS table.
  4. For US applications, order official Trinity transcripts — WES and similar services handle conversion.

TCD grading system

Trinity modules on ECTS scale use: A (90–100 excellent), B (80–89 very good), C (70–79 good), D (60–69 satisfactory), E (50–59 sufficient), F (below 50 fail). Some programmes also report percentage marks mapping to I–IV honours class boundaries — check your school handbook.

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 or browse student articles on the blog.

Percentage conversion

Irish and UK-linked programmes may show both percentages and class. ECTS letters do not convert via CGPA × 25 — use Trinity's diploma supplement for official equivalency statements.

Related Ireland calculators

Public students in Ireland often compare grades with peers at other campuses. You may also want the Sorbonne CGPA calculator, TU Delft CGPA calculator, and UvA CGPA calculator. View every Ireland tool on the Ireland university hub or the full 61-university directory.

Frequently asked questions

Does Trinity use GPA or ECTS grades?
Modules show ECTS-compatible letters and credits. Final degree may also state I/II.i/II.ii class depending on programme.
How many ECTS credits per year at Trinity?
Typically 60 ECTS per academic year in standard full-time undergraduate load — confirm your programme schedule.
Is Trinity grading similar to UK universities?
Classification boundaries align broadly with UK norms for many honours degrees. ECTS letters standardise European mobility.
What ECTS grade do I need for Trinity postgraduate entry?
Programme-specific — competitive courses often expect B average or better. Check course entry requirements.
Do Erasmus modules count in Trinity averages?
If credited on your Trinity transcript with ECTS grades, include them in weighted calculations.
Is this Trinity calculator free?
Yes. No login required.

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