If you have ever been asked to state your GPA on a form designed for a different country's education system, you have run into the central problem of academic grading: grades are not measurements. A metre is a metre everywhere. A "B" is a local convention that depends on the subject, the institution, the marking culture and sometimes the year.
This guide explains how the main systems work, where conversion between them is defensible, and where it is guesswork dressed up as arithmetic. If you just need to calculate a GPA within one system, our GPA calculator does that; this page is about understanding what the number means.
The American GPA: a weighted average of grade points
The US grade point average is a credit-weighted mean. Each letter grade maps to a number of grade points, each course carries a credit value, and the GPA is the sum of (grade points × credits) divided by total credits. The standard four-point mapping is:
| Letter | Grade points | Typical percentage |
|---|---|---|
| A / A+ | 4.0 | 93–100 |
| A− | 3.7 | 90–92 |
| B+ | 3.3 | 87–89 |
| B | 3.0 | 83–86 |
| B− | 2.7 | 80–82 |
| C+ | 2.3 | 77–79 |
| C | 2.0 | 73–76 |
| D | 1.0 | 60–69 |
| F | 0.0 | below 60 |
Two details trip people up. First, credits matter more than most students realise. A B in a five-credit course moves your GPA more than an A in a one-credit course. If you are deciding where to spend limited revision time late in a term, the credit weighting tells you where the leverage is.
Second, weighted and unweighted GPA are different numbers and schools report both. An unweighted GPA caps at 4.0 regardless of course difficulty. A weighted GPA adds a bonus — commonly 0.5 for honours and 1.0 for Advanced Placement or International Baccalaureate courses — so it can exceed 4.0. This is why a student can legitimately report a 4.4 GPA. When a form does not specify which it wants, it almost always means unweighted, and many universities recalculate your GPA from your transcript using their own formula regardless of what you report.
The percentage-to-GPA trap
The percentage column above is a US convention, and applying it to marks from another country produces nonsense. In the UK, Australia and much of Europe, a mark of 70% is a strong first-class result. Feed it into an American conversion table and it becomes a C− — a 2.0. The error is not small; it is the difference between "excellent" and "barely passing".
The reason is marking culture, not scale. British and Australian markers treat 100% as theoretically unreachable and award marks across the full range below it. American marking compresses grades into the top quarter of the scale. Same numbers, incompatible meanings.
The UK: classifications, not averages
British higher education reports a degree classification rather than a running average: First (70%+), Upper Second or 2:1 (60–69%), Lower Second or 2:2 (50–59%), and Third (40–49%). The 2:1 is the threshold that matters most in practice, because a great many graduate employers and postgraduate courses use it as a filter.
At school level, England, Wales and Northern Ireland use GCSEs and A-levels. England's GCSE grading moved from letters to a 9–1 numerical scale, where 9 is the highest and a 4 is a "standard pass" while a 5 is a "strong pass" — a distinction that matters for school performance reporting and for some sixth-form entry requirements. A-levels remain A*–E. Scotland is separate again: National 5, Higher and Advanced Higher, graded A–D with numerical bands, awarded by the SQA.
There is no GPA in the British system and no expectation that you can produce one. If an American application asks for one, the honest answer is to report your classification or your grades and let the institution convert — which they have staff to do.
Australia: HD/D/C/P and the ATAR
Australian universities typically grade High Distinction (80%+), Distinction (70–79), Credit (60–69), Pass (50–59) and Fail. Many also compute a Weighted Average Mark (WAM), a credit-weighted percentage, and some compute a GPA on a 4-point or 7-point scale — note that both exist in Australia, so "GPA 6.0" is meaningful on a 7-point scale and impossible on a 4-point one. Always state the scale.
School leavers get an ATAR, which is a different kind of number entirely. The ATAR is not a grade or an average — it is a percentile rank between 0 and 99.95, in increments of 0.05, describing your position relative to your age cohort. An ATAR of 80 means you performed better than roughly 80% of the relevant population. It cannot be converted into a percentage mark because it never was one, and its calculation involves scaling subject results against the strength of the field taking each subject.
Canada, Ireland and the ECTS system
Canada has no national standard, which follows from having no federal education department. Most universities use a 4.0 or 4.3 scale, but percentage bands differ by province and by institution, and Québec's CEGEP system reports an R score (cote de rendement au collégial) that incorporates both your standing within your group and the strength of that group.
Ireland's Leaving Certificate uses grades H1–H8 at Higher level and O1–O8 at Ordinary level, which convert into CAO points. Points from your best six subjects determine university admission, with bonus points for Higher-level mathematics. The system is transparent and entirely mechanical — you can calculate your own points exactly.
Across the EU, the ECTS framework standardises credit rather than grade. One academic year is 60 ECTS credits, which makes study workload comparable across borders even though grading is not. The older ECTS A–E grading table was based on percentile ranks within a cohort and has largely been abandoned in favour of institutions publishing their own grade distributions. That shift is telling: the body best placed to build a European grade conversion table concluded it could not be done reliably.
Systems that resist conversion entirely
Some assessment systems are not averages at all, and treating them as such destroys the information they carry:
- New Zealand's NCEA is standards-based. You accumulate credits by meeting achievement standards at Achieved, Merit or Excellence. There is no aggregate mark, by design.
- Sweden's A–F system is criterion-referenced against published knowledge requirements. The criteria for a C are written down; you either meet them or you do not.
- Israel's Bagrut weights subjects by unit level, so the same grade in a three-unit and a five-unit subject carries different weight.
- Germany's scale runs backwards from most Anglophone intuitions: 1.0 is the best grade and 4.0 is the minimum pass. A German GPA of 1.3 is excellent. Reading it as an American 1.3 inverts the meaning completely.
What to do when you must convert
Sometimes an application genuinely requires a number. In that case, in order of preference:
- Use the receiving institution's own published conversion. Most universities that admit international students publish country-specific entry equivalences. Their table is the one that will be applied to your application, so any other table is irrelevant.
- Use a recognised credential evaluator if one is required — WES, ENIC-NARIC and their equivalents exist precisely because this problem is hard.
- Report your grades in their native form and attach the official grading scale from your transcript. Admissions offices strongly prefer this to a self-converted figure they have to unpick.
- If you must estimate, state the basis. "3.6 GPA (converted from a 2:1 using the university's published table)" is defensible. A bare "3.6" is not.
Never invent a GPA
Converting a classification into a GPA using an online table and reporting it as fact is misrepresentation, even when the intent is innocent. Admissions offices recalculate from transcripts, and a figure that does not reconcile with your documents is a serious problem for your application. Report what your transcript says.
Working with your own system instead
For nearly every practical purpose — tracking progress, deciding where to focus, meeting a threshold — you should work entirely within your own system and never convert at all. Find the official grading documentation for your jurisdiction, which states exactly how your final result is computed, and plan against that:
United States
State standards and graduation requirements, plus federal open resources.
United Kingdom
Specifications and grade boundaries from all four nations' authorities.
Australia
State assessment authorities, ATAR scaling and past papers.
Canada
Provincial curricula and course-code level expectations.
Grade boundaries are the single most useful document here and the least read. Most examination authorities publish, after each session, the raw marks that corresponded to each grade. They move year to year, but they tell you what a grade actually required — which is far more informative than any conversion table.
This guide describes general conventions and is not a substitute for your institution's own published grading policy or an official credential evaluation. Scales and grade boundaries change; check with the awarding body. Spotted an error? Tell us.