Three things that always differ
To read any grade you need three facts about its scale, not just the number on the transcript.
First, the shape. The world’s systems fall into a handful of families: percentage/raw-score (China, much of South Asia, many African systems), letter plus GPA (the US, Canada, much of Southeast Asia), decimal 1–10 (the Netherlands, Spain, Portugal), 0–20 (France and francophone systems, Iran, Peru), lower-is-better numeric (Germany, the Philippines), honours classes and divisions (the UK and parts of South Asia), and descriptor or pass/fail ladders (competency and vocational programmes everywhere).
Second, the direction. Most scales run higher-is-better, but some run the other way: a German university 1.0 is excellent and 4.0 is the lowest pass, and several Philippine universities put 1.00 at the top and 5.00 at the bottom. Mixing the direction up is the single most common conversion mistake.
Third, the pass mark. ‘Passing’ is not a fixed line. It sits near 33–40% in parts of India, Bangladesh and Pakistan, around 40% for UK honours degrees and several African systems, 50% across much of Europe and Australia, 60% in China and much of the Gulf, and as high as 75% in Philippine K–12. The same 65% can be a comfortable pass in one country and a near-fail in another.
The main grading families, region by region
North America leans on letter grades and a 4.0 GPA — typically A = 4.0 down to F = 0, with an A+ usually capped at 4.0. Weighted honors and AP/IB bonuses are common in US high schools but have no national standard, so a weighted GPA is only meaningful next to the scale that produced it. To roll course grades into a cumulative figure, the Cumulative GPA Calculator and Weighted Grade Calculator do the arithmetic; class rank and Latin honours add cohort-relative context.
The UK and Ireland award honours classes: First (70%+), Upper Second or 2:1 (60–69), Lower Second or 2:2 (50–59) and Third (40–49). Those boundaries are a widely used convention rather than a national law — each university sets its own, and Scottish degrees differ. School-leaving A-levels convert to UCAS Tariff Points (A* = 56 down to E = 16), which is the official, stable currency for UK admissions.
Germany and the Germanic family run lower-is-better: a university scale from 1.0 (best) to 4.0 (lowest pass), with 5.0 a fail. Germany is unusual in publishing an official way to convert foreign grades — the KMK’s modified Bavarian formula — which the German Grade Calculator implements.
France and the 0–20 systems (also Iran and Peru) mark conservatively: a 15/20 is a strong result and full marks are almost unheard of, which is exactly why a linear map to a 4.0 scale overstates the gap. The Netherlands, Spain and Portugal use a 1–10 family where the Dutch pass mark is 6 and 9s and 10s are rare in practice.
South Asia layers several systems at once: percentage marksheets, a 10-point CGPA, and class/division language all coexist. India’s CBSE board publishes an approximate percentage = CGPA × 9.5 for its 2010–2017 CGPA-era marksheets (which caps at 95%), while university CGPA-to-percentage rules differ by institution and scheme. The CGPA to Percentage, Percentage to CGPA and SGPA to CGPA tools cover the common cases. Pakistan is moving secondary exams to a 10-grade letter scale with the pass mark raised to 40% from 2026.
Elsewhere: China, Japan and Korea are largely percentage-based with institution-specific GPA formulas and a ~60% pass; the Gulf and Egypt mix US-style GPA with percentage-plus-descriptor reporting (Saudi universities use both 4.0 and 5.0 ceilings, which the Saudi GPA Calculator handles); and Australian coursework uses HD/D/CR/P bands and a weighted average mark (WAM), with New Zealand’s NCEA reporting Achieved/Merit/Excellence. Across Europe, the ECTS framework standardises credits but not grades — the old A–E ECTS scale was dropped, and the ECTS Grade Converter reflects the distribution-based approach that replaced it.
Why you cannot just convert a grade with a formula
The tempting shortcut — (mark ÷ max) × 4, or any straight-line stretch between two scales — is wrong, and the systems above show why. It assumes every country uses its full range the same way, so it quietly punishes conservative markers (a French 15/20 is excellent but lands near a mediocre GPA) and flatters lenient ones.
There are really only two kinds of authoritative conversion. The first is a published national rule. Germany’s modified Bavarian formula is the clearest example: x = 1 + 3 × (N_max − N_d) ÷ (N_max − N_min), where the result is truncated to one decimal place (2.37 becomes 2.3, never rounded up), and N_max/N_min come from the country’s official reference values rather than the raw scale ends. The second is Europe’s ECTS method, which is not a formula at all: institutions compare grade distributions for passing grades, by field, and decide in advance how to map overlapping bands.
Everything else is an estimate. A good converter places your grade by band or percentile within its own system, then maps that position into the target system’s passing domain — and labels the output indicative. That is the right tool for orienting yourself, framing an application, or comparing offers: the International Grade to US GPA converter and the GPA Equivalence Converter do exactly this, and the Global GPA Equivalence Table study lays the major systems side by side. For a binding figure on a visa or admissions form, a recognised credential evaluator (such as WES, your country’s ENIC-NARIC office, or Germany’s anabin database) is the only authority — their assessments are themselves estimates, but officially recognised ones.
What counts as ‘good’ is local
Because the pass mark and the top of the scale move from country to country, so does the meaning of a ‘good’ grade. A 60% is a 2:1 — an upper-second, the typical graduate-job and postgraduate threshold — in the UK, but only a bare pass in systems that start passing at 50%, and a fail where 60% is the line.
The top of the scale is compressed too. Honours classification deliberately bins a wide spread of performance into a few labels — First, Distinction, cum laude, a 4.0 — so the difference between a 71% and a 95% First can vanish on the certificate. Where ranking matters, the Class Rank Percentile and Latin Honours tools recover the cohort-relative picture that a single average hides.
Weighting is the last local twist. A weighted GPA (extra points for honors, AP or IB courses) has no national standard, so it should always travel with the rule that produced it; the unweighted A = 4.0 baseline is the safer common denominator. When you are combining marks of different credit values, the Weighted Grade Calculator and Cumulative GPA Calculator keep the credit-weighting honest instead of averaging raw numbers.
Five cases to handle with care
Some results resist conversion entirely, and treating them like ordinary grades produces confident nonsense.
Competency, pass/fail and practicum grades often carry no numeric value at all — a ‘Pass’ on a placement is not a 4.0 and cannot be averaged into one. Field-specific bands matter too: faculties within one university can mark differently, so ‘the country scale’ is rarely a single scale. Rank-sensitive external exams are a separate category again — Kenya’s KCSE thresholds shift year to year, Chile’s PAES runs on a 100–1000 normed scale, and New Zealand Scholarship is limited to a small top fraction of the cohort; these are admissions evidence, not course grades, and should never be linearly equated.
Two of the most-searched conversions simply do not exist officially. The IB diploma is scored 1–7 per subject to a /45 total with a pass at 24 (subject to further conditions), but the IBO publishes no official GPA or percentage conversion — the IB Diploma Calculator computes the diploma total and its passing conditions, not a GPA. Likewise, the US College Board defines no fixed GPA scale or weighting, so no conversion should be attributed to it.
The thread through all five: unless an official bilateral rule applies, any cross-system grade is an estimate. Use it to understand and to apply — not as a legal equivalency.