How to Convert the Polish Grading System (2-5 Scale) to a US GPA (2026)

Polish universities grade on a 2 to 5 scale, not the 0-10 or 100-point scales most of this site's other grading-conversion guides cover, and that narrower range creates its own specific problem: there's much less room between a fail and a top grade, half-point "plus" grades are common and carry real meaning, and the published tables that map this scale onto US letter grades don't agree with each other on where the lines actually fall. If you studied in Poland and are converting your transcript for a US graduate application, treating 2-5 as if it maps cleanly onto A through F is the easiest way to misrepresent a genuinely strong record, in either direction.

The 2-5 scale, and what each number actually signals

Polish higher education grades on a scale that runs from 2.0 (niedostateczny, unsatisfactory, a fail) up through 3.0 (dostateczny, satisfactory), 4.0 (dobry, good), and 5.0 (bardzo dobry, very good), with half-point "plus" grades, 3.5 and 4.5, awarded directly by lecturers as their own distinct marks rather than as an average you compute afterward. That's a meaningfully different structure from a 10-point or 100-point scale: there are effectively only six or seven distinct grade values available above the fail line, which means a single grade carries more weight on a Polish transcript than the equivalent single grade does on a wider scale. Some institutions, Kraków's Academy of Fine Arts among them, run a university-level variant that extends to 5.5 with celujący (excellent) as a separate top grade above the standard 5.0, but that's the exception rather than the rule across Polish higher education generally. Your specific university's own regulamin studiów (study regulation) is what actually governs which version applies to your transcript.

The ECTS letter-grade mapping disagrees across sources

Because Poland participates in the Bologna Process, most Polish universities also publish an ECTS letter-grade equivalent (A through F) alongside the local 2-5 mark, intended to help a foreign institution interpret the grade. In practice, the published mappings don't fully agree with each other even for the same underlying scale. Vincent Pol University's own published grading-system page maps 5.0 to A, 4.5 to B, 4.0 to C, 3.5 to D, 3.0 to E, and 2.0 to F or FX. Powiślański University's published grading scale document uses the same top-down structure. A separate third-party comparison resource, by contrast, bands 3.0 across both the C and D range depending on which version of its table you read, placing it differently than either university's own document. None of these sources is simply wrong, they're each describing a real, used mapping, which is exactly the problem: a single Polish grade can land on a different US letter depending on whose table does the converting.

Half-point grades don't survive a simple letter conversion

A 3.5 or 4.5 is where the gap between Poland's scale and a standard US A-F letter system shows up most clearly. These half-point grades are real, separately defined marks, dostateczny plus and dobry plus, that a lecturer assigns directly, not midpoints you're rounding between two whole grades. A conversion table built only around the four whole-point values (2, 3, 4, 5) has no clean slot for them, which is why some university tables introduce their own separate letter step for the half-point grades (Vincent Pol's table gives 3.5 its own B-adjacent or D-adjacent step depending on direction) while other simplified comparison charts just fold the half-point grade into whichever adjacent whole grade's band is closest. If your transcript has a run of 3.5s and 4.5s, the specific conversion table you use, or the specific evaluator's own internal methodology if you go the formal route, can genuinely change your computed GPA by a meaningful amount, not a rounding-error amount.

No single Polish authority publishes one official table

It's worth being direct about something that trips up a lot of applicants doing this conversion themselves: no single Polish ministry or national accreditation body issues one official Poland-to-US GPA conversion table. Each university writes its own grading regulation and its own ECTS mapping, broadly aligned with the Bologna Process framework in spirit but not standardized down to the exact percentile bands behind each letter. That's the structural reason Vincent Pol's, Powiślański's, and third-party tables don't fully agree: they're each a legitimate, independently set mapping, not competing attempts at the one correct answer. A formal credential evaluation from a NACES-member agency like WES or ECE, run against the specific transcript and the specific university's own grading scale, is what a US graduate program actually treats as authoritative, not a generic online calculator built around an averaged or simplified version of the Polish scale.

Dyplom z wyróżnieniem is a graduation honor, not a GPA figure

A dyplom z wyróżnieniem (diploma with distinction) shows up on plenty of strong Polish transcripts, and it's easy to mistake for a direct GPA-equivalent when it isn't one. It's a graduation-level honor each university or faculty awards under its own written criteria, not a single national standard, and the threshold varies more than you'd expect between otherwise comparable universities. Published 2024-2025 regulations from the University of Silesia in Katowice set the bar at a final weighted average of at least 4.74, no disciplinary penalties, no repeated semester, and very good marks on both the thesis and the diploma exam, with a documented-achievement exception for students who narrowly miss that average. Kielce University of Technology's own faculty rules set a different weighted-average threshold, 4.70 for bachelor's-level study and 4.80 for master's-level, plus evidence of research participation or publications. SGH Warsaw's published bachelor's rule requires an average above 4.70 with top marks on the thesis and exam. None of these numbers transfer between institutions, and none of them is your converted GPA, your weighted average (the ocena ważona most Polish universities actually track, a credit-weighted figure, not a flat average of every listed grade) is the number that actually feeds into a US conversion, while the distinction itself is a separate, binary honor worth mentioning as context on an application, not blending into a converted GPA figure.

Whether you need a formal evaluation at all

This depends on the specific program you're applying to, and it's worth confirming directly rather than assuming either way. Some US graduate programs require a sealed, course-by-course credential evaluation from a NACES-member agency before they'll review an international application at all; others accept a self-reported conversion alongside your original Polish transcript, verified formally only after an admission offer; and some evaluate the original 2-5 transcript directly without requiring a US-scale conversion up front. Our comparison of WES, ECE, and IQAS covers how each evaluator actually works and which one a given program is more likely to name, and our guide to transcript and degree certificate requirements covers when a formal evaluation is genuinely required versus when the original transcript will do on its own. Check your target program's international-admissions page for its specific requirement before paying for an evaluation you may not actually need yet.

A converted number is one input, not the whole picture

Even a carefully done conversion is only one figure a professor sees, and it's rarely the one that decides whether they personally fund your research off their own grant. Our piece on why research fit matters more than GPA covers why a professor evaluating you for their own lab reads your actual coursework and research experience far more closely than a single converted GPA figure on an admissions form. That's exactly why a well-targeted cold email to a specific professor is worth running in parallel with the formal application and its credential evaluation, not instead of it. GradScoutFunding searches professors by field and country, confirms they're actively publishing, and drafts a personalized outreach email grounded in one of their real recent papers, for you to review and send yourself, nothing goes out automatically. Our guide to finding a PhD supervisor in Poland covers the reverse direction, studying inside Poland rather than converting a Polish degree for an application abroad. The free tier gives you 2 credits with no card required, and paid credit packs are one-time purchases that never expire.

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