Japanese university grade conversion
Japanese universities report results on a five-tier scale that uses either traditional kanji-derived names (Shu, Yu, Ryo, Ka, Fuka) or modern letter labels (S, A, B, C, F). When you apply to a US graduate program or transfer credits within Europe, you need that scale expressed as a 4.0 GPA or an ECTS letter. This converter performs a credit-weighted conversion so each course counts in proportion to its credits.
How it works
Each grade maps to a US grade point and a percentage band:
S / Shu 90-100% -> 4.0 (ECTS A)
A / Yu 80-89% -> 3.0 (ECTS B)
B / Ryo 70-79% -> 2.0 (ECTS C)
C / Ka 60-69% -> 1.0 (ECTS D)
F / Fuka 0-59% -> 0.0 (ECTS F)The weighted GPA is the sum of each course’s grade point times its credits, divided by the total credits:
GPA = sum(gradePoint_i * credits_i) / sum(credits_i)Courses with zero or blank credits are ignored. If you leave the grade unset the row is skipped.
Tips and notes
- Many Japanese schools use a four-tier scale (A, B, C, F) without an S band. If yours does, simply never select S and the top grade A maps to the 80-89 band as printed on your transcript; check whether your school treats A as 4.0 or 3.0.
- Grade inflation differs by institution. National universities typically grade harder than some private universities, so the same letter can reflect different mastery.
- Admissions committees frequently apply their own conversion table, so use this figure as a planning estimate, not an official equivalence.
Understanding the Japanese university grading system
The traditional Shu-Yu-Ryo-Ka system
The original Japanese grading system used kanji-derived terms that have been increasingly replaced by letter labels in recent decades:
| Traditional | Letter | Reading | English meaning | Typical band |
|---|---|---|---|---|
| 秀 (Shu) | S | Shuu | Excellent | 90–100% |
| 優 (Yu) | A | Yuu | Superior / Good | 80–89% |
| 良 (Ryo) | B | Ryou | Satisfactory | 70–79% |
| 可 (Ka) | C | Ka | Pass / Acceptable | 60–69% |
| 不可 (Fuka) | F | Fuka | Fail | Below 60% |
The kanji still appear on some older or more traditional transcripts, especially from established national universities. Many modern transcripts use the letter labels or sometimes both forms side by side.
The S grade — when it appears and what it means
Not all Japanese universities award an S grade. It was introduced at many institutions as a way to recognise truly outstanding performance within the A band. Some schools that use S treat A as a 3.0 (80–89%) and S as a 4.0 (90–100%), while others use A for the full 80–100 range and omit S entirely. Check the grading guide in your academic handbook. If your school uses A for 80–100 without an S band, enter those as A grades and note that the resulting GPA may appear lower than expected because each A is worth 3.0 under the standard mapping.
Japanese transcripts and US graduate school applications
American graduate programs that see Japanese transcripts regularly are aware that an A in the Japanese system (80–89%) often maps to a B on the US 4.0 scale, and they typically adjust expectations accordingly. The conversion depresses Japanese GPAs below what the raw letter letters might suggest to an unfamiliar reader. When applying, it can be helpful to note in your personal statement or a transcript addendum that your institution’s A grade required an 80% minimum and that you are in the top X% of your cohort — context that a straight GPA conversion cannot convey.
Handling transcripts without percentage bands
Some Japanese transcripts omit percentage bands entirely and list only the grade letter. If yours does, use the standard mapping shown above (S=90–100, A=80–89, B=70–79, C=60–69) and note the assumption. Requesting a transcript supplement from your registrar that specifies the grading scale is common practice for international applications and is usually provided at no cost.