Course credits
Credits are the multiplier. A small grade change in a high-credit course can move GPA more than a big change in a low-credit course.
SLIIT Grading System & GPA Calculator
Estimate your SLIIT GPA using SLIIT's credit-weighted GPA grading system.
Your SLIIT courses
Your SLIIT GPA
Total Credits: 0Grade: —Percentage: —
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Fill at least one grade and credit value to see your GPA.
How the SLIIT Grading System & GPA Calculator Works
SLIIT GPA is credit-weighted. Grade points are multiplied by module credits, added together, then divided by total registered GPA credits.
GPA = total grade points earned / total GPA creditsExample: A- in a 4-credit module contributes 3.70 x 4 = 14.80 grade points. B in a 3-credit module contributes 3.00 x 3 = 9.00 grade points.
This page is built for SLIIT students who want a quick WGPA/GPA estimate before the official record updates. Enter module credits exactly as they appear in your semester plan, because a high-credit module changes the average more than a low-credit module.
Source checked for this scale: SLIIT grading support article.
What to double-check before trusting the number
Excluded marks
Do not enter pass/fail, withdrawal, audit, or incomplete records unless your official policy says they count in GPA.
Repeated courses
If a repeated course replaces or averages a previous attempt, your transcript can differ from a simple course-by-course estimate.
SLIIT Grading Scale
| Grade | Grade points |
|---|---|
| A+ | 4.0 |
| A | 4.0 |
| A- | 3.70 |
| B+ | 3.30 |
| B | 3.0 |
| B- | 2.70 |
| C+ | 2.30 |
| C | 2.0 |
| C- | 1.70 |
| D+ | 1.30 |
| D | 1.0 |
| E | 0.0 |
Use only GPA-bearing grades for the GPA you are estimating.
Frequently Asked Questions
How does SLIIT calculate GPA?
SLIIT GPA is calculated with a credit-weighted formula: grade points multiplied by course credits, divided by total GPA credits. This page uses the grade-point values shown in the scale table above.
Is this SLIIT GPA calculator official?
No. It is an independent planning calculator built from published grading information. Use it to estimate and plan, but rely on your official transcript, registrar, or student portal for the GPA that counts.
What should I leave out?
Leave out courses that do not carry GPA points for the GPA you are estimating, such as audit, pass/fail, transfer-only, withdrawal, or incomplete records unless your school explicitly includes them.
Why can my transcript GPA differ from this result?
Transcript GPAs can differ because of repeated-course rules, rounding, course exclusions, academic standing policies, transfer treatment, or faculty-specific rules. The calculator shows the clean credit-weighted math so you can spot the likely reason.
Can I use this for a semester GPA and cumulative GPA?
Yes. Enter one semester for a term GPA, or enter all GPA-bearing courses for an overall estimate. If you already know past semester GPAs, the cumulative or overall GPA calculator may be faster.
What makes this page more useful than a generic GPA calculator?
The grade dropdown uses the specific scale for Sri Lanka Institute of Information Technology, the explanation calls out common transcript traps, and the result includes a smart-move hint showing which entered course would move your GPA fastest.