How to Convert the Sri Lankan Grading System to a US GPA (2026)

Search "Sri Lanka GPA conversion" and you'll land on three or four calculator sites that each produce a different number from the same percentage mark. That's not a bug in one of the tools, it's a real feature of the underlying system: Sri Lankan universities don't issue a GPA at all. They grade by percentage and classify the overall degree into First Class, Second Class (Upper or Lower Division), or Pass. A "Sri Lankan GPA" is always somebody's conversion of that record, never the original, and the conversion tables you'll find online don't agree with each other.

Why the calculators disagree with each other

Pull up three different Sri Lanka to US GPA tables and you'll see the same 70% mapped to a 3.0, a 3.5, and a straight A (4.0) depending on which page you're reading. None of them cites an official source for its exact cutoffs, because there isn't a single national one to cite. The most credible version we found comes from Nuffic, the Dutch organization for internationalization in education, which publishes a grade-conversion table specific to the University of Colombo: 80 to 100% maps to A+ (4.00), 70 to 74% to A- (3.50), and 60 to 64% to B (3.00), with marks below roughly 30 to 39% treated as a fail. Nuffic also flags that Sri Lankan higher education institutions use a number of different grading systems in parallel, so even this table is one university's practice, not a national standard you can apply to every Sri Lankan degree.

That's the gap every generic "convert your Sri Lankan GPA" page glosses over: they publish a table as if it were the answer, when the honest answer is that the table depends on which university issued your transcript and which institution is doing the converting. If you're citing a GPA figure anywhere in an application, state clearly which conversion method produced it.

Your actual degree classification matters more than any GPA you calculate

Most Sri Lankan universities set First Class at 70% and above, Second Class Upper Division somewhere in the low-to-mid 60s, Second Class Lower Division in the 55 to 60% range, and a Pass below that, though the exact cutoffs are set by each university's own academic regulations rather than one nationwide rule. That classification, not a converted decimal GPA, is what your actual transcript and degree certificate state, and it's the figure a receiving university's admissions team will weigh most heavily, because it's the one thing that isn't somebody's estimate.

If an application form forces you to enter a GPA and gives no further instructions, calculate your best honest estimate using a transparent method (show your working if there's a notes field) rather than quoting a single calculator's output as if it were official. Admissions readers who handle Sri Lankan applicants regularly already know the classification system doesn't map cleanly to a US-style GPA.

How UK and US universities actually convert it (and why the numbers differ from each other)

UK universities, used to the same percentage-and-classification system from their own degrees, often state Sri Lanka entry requirements directly in those terms, for example asking for a Second Class Upper Division degree, rather than forcing a GPA conversion at all. Where a UK institution does need a GPA-equivalent figure for a form, published comparison tables commonly put a First Class at roughly 3.5 out of 4.0 and a Second Class Upper at roughly 3.0 out of 4.0, figures some UK schools use directly for a UK 1st-class or 2:1 degree more broadly, not specifically calibrated to Sri Lanka.

US graduate admissions, by contrast, are far more likely to ask for a credential evaluation from a NACES-accredited agency (WES, ECE, IQAS, SpanTran, and others), which produces a course-by-course report converting each individual module's grade to the US 4.0 scale and assigning US-equivalent credit hours, rather than converting the overall degree classification as a single block. That's a fundamentally different calculation method from the UK's classification-level approach, which is exactly why a UK-style 3.5 and a NACES-style course-by-course GPA for the same Sri Lankan transcript won't necessarily match. If you're applying to both UK and US programs from the same degree, expect to end up with two different "GPA" figures and don't assume one is wrong because it doesn't match the other, they're answering different questions. For the mechanics of choosing and using a credential evaluator, see our WES vs. ECE vs. IQAS guide.

A practical sequence

• Check your own university's published grading and classification regulations first, the exact percentage cutoffs for your degree class are set at that level, not nationally.
• If an application only asks for your degree class (First, Second Upper, Second Lower, Pass), report that directly rather than converting it to a GPA no one asked for.
• If a US program requires a GPA figure and doesn't name a specific evaluator, ask the admissions office whether they'll accept a self-reported estimate for initial review or require a NACES-accredited course-by-course evaluation before they'll consider the application.
• Keep your original percentage-based transcript and degree certificate ready to send regardless, since it's the document every conversion, official or self-calculated, is ultimately checked against.

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