GPAWorld country hub
GPAWorld covers 10 universities in Japan. Between them they use 3 different grading scales, the most common being the 4.00 GPA scale at 6 of them. They also round the cumulative average in 2 different ways. That is why this site keeps one grading configuration per university instead of one per country — a single "Japan GPA formula" would be wrong for most students who used it.
Supported universities
10
Across 3 different grading scales. Every listing links to a calculator preloaded with that university's own rules.
GPAWorld
Semester GPA
4.00
Updated CGPA
--
GPA Credits
9
Rows
3
Enter your current CGPA and completed credits to calculate your updated CGPA. Your semester GPA is shown from your courses below.
9 credits entered
This is the clearest argument against using one national formula. Take a student who earns their university's second-best grade in four courses— identical academic performance, on paper — and run it through each institution's own rules:
International Christian University
Second-best grade: B (3 points)
3.00
Semester GPA
Kyoto University
Second-best grade: A (4 points)
4.00
Semester GPA
Same effort, same relative result, different number — because the scales, point values and rounding rules are set by each university rather than by Japan. A calculator that ignores this gives most students the wrong figure.
Looking at the Japan configurations side by side: 5 of the 10 use plus/minus grades while the rest award whole bands only, so an "A−" is a real grade at some and does not exist at others; 9 publish the percentage range behind each letter, which lets you work backwards from a mark to a grade; repeated courses are handled 2 different ways across the group. Each university's own page spells out which of these apply to you.
| University | Scale | Top grade | Lowest pass | CGPA rounding | Repeats |
|---|---|---|---|---|---|
| International Christian University | 4.00 GPA scale | A (4.0) | D (1.0) | Rounded to 2 dp | Manual review |
| Keio University | 4.00 GPA scale | S (4.0) | C (1.0) | Rounded to 2 dp | Manual review |
| Kyoto University | 4.30 GPA scale | A+ (4.3) | D (1.0) | Rounded to 2 dp | Manual review |
| Kyushu University | 4.00 GPA scale | S (4.0) | C (1.0) | Rounded to 2 dp | Manual review |
| Nagoya University | 4.30 GPA scale | A+ (4.3) | C- (1.0) | Rounded to 2 dp | Manual review |
| Osaka University | 4.00 GPA scale for AY2026 and later entrants | A+ (4.0) | C- (1.0) | Truncated to 2 dp | All attempts count |
| Sophia University | 4.00 GPA scale | A (4.0) | D (1.0) | Rounded to 2 dp | Manual review |
| Tohoku University | 4.00 GPA scale | AA (4.0) | C (1.0) | Truncated to 2 dp | Manual review |
| University of Tsukuba | 4.30 GPA scale | A+ (4.3) | C (2.0) | Rounded to 2 dp | Manual review |
| Waseda University | 4.00 GPA scale | A+ (4.0) | C (1.0) | Rounded to 2 dp | Manual review |
4.00 GPA scale
6 universities
International Christian University, Keio University, Kyushu University, Sophia University, Tohoku University, Waseda University
4.30 GPA scale
3 universities
Kyoto University, Nagoya University, University of Tsukuba
4.00 GPA scale for AY2026 and later entrants
1 university
Osaka University
No. The 10 Japan universities covered here use 3 different grading scales between them, so the same grades can produce very different GPAs. Pick your university from the list on this page.
Open your university's page from the list above. Enter your current CGPA and completed credit hours, then add this semester's courses with their credit hours and grades. The grade options come from that university's own table, and the result is rounded using its own rule — so the number matches how your registrar calculates it.
No — this group alone uses 2 different rounding rules for the cumulative average: rounded to 2 dp, truncated to 2 dp. Truncating instead of rounding can be the difference between sitting just above or just below a scholarship threshold, so it is worth checking your own university's rule.
Because the point values differ. Four courses at the second-best grade give 3.00 at International Christian University (B = 3.0 points) but 4.00 at Kyoto University (A = 4.0 points). Identical performance, different numbers.
Quite possibly — coverage is being expanded steadily, and each university is only added once its grading policy has been read from an official source and encoded. Send us the university name and a link to its published grading scale and we will add it.
If you want to check the arithmetic by hand rather than trust a calculator, these walkthroughs cover the method that sits underneath every university page on this site.
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