Universities that grade with "優 (Excellent) / 良 (Good) / 可 (Pass)," universities that score on a 0–100 percentage, universities that don't calculate a GPA at all — Japan's grading system ran on a framework utterly unlike America's 4.0 scale.
And what does that produce? Even someone who studied diligently at a Japanese university ends up with a low GPA once it's naively converted to the 4.0 scale. As a result, they fall short of the GPA bar that overseas graduate schools demand, and an endless stream of people give up on studying abroad, convinced "It's just not for me."
That decision is premature.
In this article, I'll show you how to legitimately overturn the structural handicap that is the Japanese university GPA.
Where GPA sits in the American university system
First, let's understand how important GPA is within the American education system.
America has no nationwide, standardized academic exam like Japan's old Center Test or the current Common Test. (The SAT and ACT exist, but since 2024 many top universities have gone Test-Optional.) That's why one of the most important measures a university uses to gauge a student's ability is GPA.
So how high are the GPAs of students at America's top universities?
| University |
Average admitted GPA (unweighted) |
Notes |
| Stanford |
3.94 |
73% of the Class of 2028 had a perfect 4.0 |
| Harvard |
3.9–4.0 |
Over 4.2 on a weighted average |
| MIT |
3.9 or higher |
The most competitive on the STEM side |
Nearly everyone has a GPA close to a perfect score. In Stanford's Class of 2028, 73% of admitted students had a GPA of 4.0 — that is, students who earned an A or better in every single course.
Even more striking is the existence of the Weighted GPA. In American high schools, demanding courses like AP (Advanced Placement) and Honors carry bonus points, so a GPA can exceed 4.0. That's why the weighted average GPA of Harvard's admitted students tops 4.2.
That's the undergraduate picture. What about graduate school?
GPA in graduate admissions — "3.0" is the lifeline
For graduate programs, MBAs foremost among them, GPA is one of the key factors in the admissions review.
Let's look at the average admitted GPA at top MBA programs.
| Program |
Average admitted GPA |
| Stanford GSB |
3.76 |
| Wharton |
3.70 |
| Kellogg |
3.68 |
| Columbia |
3.60 |
Admitted students at top schools carry an average GPA in the 3.6–3.7 range. Of course, GPA is only one element of the selection; work experience, GMAT/GRE scores, essays, and interviews are all weighed together. People with low GPAs do get in.
Still, the industry says "3.0 is the lifeline." Drop below a 3.0 GPA and, however strong your other elements are, the risk of being disadvantaged at the document-screening stage rises sharply. Put the other way: with a 3.0 or above, you can at least step into the ring.
And this is exactly where the Japanese university GPA becomes a problem.
Why Japanese university GPAs come out low
There are structural problems in how Japanese universities grade.
Problem 1: The severity of the grading standards
American universities, especially the top schools, have long been criticized for Grade Inflation. High grades come so easily that the media reports the most common grade at Harvard is an A. Japanese universities, by contrast, tend to maintain relatively strict grading standards.
For the same level of ability, where an American university would award an A (4.0), a Japanese university awards a "良 (Good)" (roughly a B = 3.0) — and this kind of gap shows up as a GPA disadvantage.
Problem 2: The diversity of grading scales
Grading at Japanese universities isn't standardized.
- Universities that use the five-tier S/A/B/C/F scale (the 4.0 scale)
- Universities that grade on four tiers of 優 (Excellent) / 良 (Good) / 可 (Pass) / 不可 (Fail)
- Universities that grade on a 0–100 percentage
- Universities where Pass/Fail-only courses are mixed in
This diversity makes naive conversion to America's 4.0 scale difficult. Especially at universities with only the three tiers of "優・良・可," whether you treat "優" as an A (4.0) or a B+ (3.3) can swing the GPA dramatically.
Problem 3: A student culture that ignores GPA
Ten years ago, when I was in university, almost none of the students around me were strategically choosing courses to "raise their GPA." "As long as I get the credit," "I can graduate even with a 可 (Pass)" — that was the mindset of the vast majority. It was fundamentally different from American students, who protect their GPA from freshman year with an eye on their job hunt.
Because of these structural problems, someone who graduated from a Japanese university very likely has a GPA that comes out unfairly low relative to their real ability.
WES — the "legitimate weapon" that overturns the GPA handicap
Now for the main point.
Have you heard of an organization called WES (World Education Services)?
WES is a New York–based nonprofit founded in 1974 that provides Credential Evaluation services, converting educational credentials from around the world to U.S. and Canadian standards. Performing over 200,000 evaluations a year, it's one of North America's largest credential-evaluation agencies. It's also a founding member of NACES (the National Association of Credential Evaluation Services), so its credibility is beyond question.
What does WES do for you? Simply put, it converts your Japanese university grades to America's 4.0 scale "fairly."
Why the quotation marks around "fairly"? Because WES's conversion isn't a simple numeric translation — it's a conversion that accounts for the educational system and the cultural context of grading in each country.
The fact that Japanese university grading tends to be stricter than America's is factored into WES's evaluation methodology. As a result, when you run your Japanese university grades through WES, the number that comes out can be considerably higher than the 4.0-scale GPA you calculated yourself.
In some cases, GPA rises by close to 0.5–1.0. I actually know someone whose self-calculated 2.9 GPA rose to a 3.6 under WES conversion. 2.9 versus 3.6 — recall the earlier point that "3.0 is the lifeline" to see how enormous that gap is. Someone who couldn't even step into the ring at 2.9 is, at 3.6, closing in on the average of admitted students at top schools.
For anyone on the verge of giving up because "my GPA is too low to study abroad," WES is literally a game changer.
How to actually use WES
Step 1: Start with the free simulation
Before you request a formal evaluation outright, use WES's free tool, the "iGPA Calculator," to simulate roughly what your GPA would come out to.
URL: https://applications.wes.org/igpa-calculator/
This tool lets you enter your grades one course at a time and check your estimated GPA on the 4.0 scale. It's a bit of manual work, but it's completely free. Since you can grasp in advance "how much running it through WES would raise my GPA" before applying for a formal evaluation, I strongly recommend trying it first.
WES also has another free tool, the Degree Equivalency Tool, which lets you check which U.S. or Canadian degree your degree corresponds to.
Step 2: Apply for a formal evaluation
Once you look at the simulation results and decide "this is worth it," apply for a formal evaluation.
WES's evaluation services mainly come in the following types (pricing as of January 2026).
| Service |
Contents |
Price (USD) |
| Document-by-Document Basic |
Evaluates degree equivalency only |
About $118 |
| Course-by-Course Basic |
Includes per-course GPA conversion |
About $168 |
| Course-by-Course ICAP |
GPA conversion + electronic storage + additional-delivery support |
About $214 |
For the purpose of graduate applications, you need Course-by-Course (per-course GPA conversion). If GPA conversion is your goal, choose at least Course-by-Course Basic. ICAP is convenient when you're sending to multiple universities or when you might reuse the evaluation report in the future.
Step 3: Ask your alma mater to issue a transcript
In parallel with your WES application, ask the Japanese university you graduated from to issue an English-language transcript. The submission method to WES varies by university, but in many cases the university mails it directly to WES.
Step 4: Send the documents to WES and wait for the result
Once WES has received all the documents, the processing period is about 7 business days. But that's counted "from when the documents reach WES." Including the mailing time for the Japanese university to issue the transcript and for it to reach Canada (WES's Canadian office) or the United States, you should expect 3–7 weeks in total.
If you're thinking about applying this year, act right now. Rushing to apply to WES only after the deadline is bearing down because "my GPA isn't enough" may leave you unable to make it in time.
What happens in the WES conversion — understanding the mechanism
Let's look a little more concretely at why running through WES raises your GPA.
If your Japanese university uses the "優・良・可" grading system, most people, trying to calculate their own GPA, convert it like this:
- 優 (Excellent) → A (4.0)
- 良 (Good) → B (3.0)
- 可 (Pass) → C (2.0)
With this conversion, a student split evenly between "優" and "良" ends up with a GPA of 3.0.
But under WES's conversion methodology, a Japanese "優" corresponds to 80–89% in America and may be evaluated in the range of A- (3.7) to B+ (3.3). And "良," too, is in some cases rated higher than a plain B (3.0), factoring in Japan's strict grading standards.
As this "cultural adjustment" accumulates, your overall GPA is pushed up significantly.
Of course, the magnitude of the increase varies with the breakdown of your grades and your university's grading system. Not everyone goes up by 1.0. That's precisely why it's important to first simulate your own case with the free iGPA Calculator.
Things to watch out for when using WES
WES is a powerful tool, but there are a few caveats.
Not every university accepts WES evaluations
Some graduate schools officially recognize WES evaluations and some don't. Be sure to confirm in advance whether your target university explicitly states "WES or equivalent credential evaluation service." Many American graduate schools accept WES, but some designate a different agency, such as ECE (Educational Credential Evaluators).
GPA alone doesn't decide the outcome
Even if WES raises your GPA, that's still just one element of your application. Your GMAT/GRE scores, essays, letters of recommendation, work experience — all of these are weighed together. Once you've cleared the GPA handicap with WES, redirect that saved energy into strengthening the other elements.
Early action is essential
To repeat: WES processing takes 3–7 weeks in total. To make it in time for R1 (September–October deadlines), you should finish your WES application and your transcript-issuance request to the university by the end of July at the latest. Even for R2 (January deadlines), start moving by the end of November.
Beyond WES, there are strategies to compensate for a GPA handicap.
Use the Optional Essay
Many MBA programs provide an Optional Essay field: "If there's anything you'd like to add about your grades, please write it here." Here, by explaining the peculiarities of the Japanese university grading system, the fact that there was no GPA-conscious culture at the time, and your current motivation and ability, you can help Admissions understand the context behind your GPA.
Post an overwhelming GMAT/GRE score
When your GPA is weak, a high GMAT/GRE score is the most effective way to cover it. Prove with a test score that "my undergraduate grades were unimpressive, but this is the level of my ability now." Even with a GPA under 3.0, scoring a GMAT 730+ will unmistakably change how admissions sees you.
Prove with your work history that you're "someone who delivers results"
With five or more years of work experience, GPA's importance drops relatively. A track record of "delivering results in the working world" speaks to your ability more eloquently than academic grades.
What I'd tell myself ten years ago
Honestly, ten years ago I struggled considerably against the GPA wall. I spent my Japanese university years ordinarily, never once conscious of GPA. When I finally started considering studying abroad and calculated my GPA on the 4.0 scale, I was stunned.
What I'd tell that younger self is: "Don't let a single number called GPA narrow your life's options."
Whether you know about a tool called WES, whether you know you can supplement with the Optional Essay, whether you know you can cover it with the GMAT/GRE — just having the information changes everything.
You, reading this article right now, already hold that information.
Summary: GPA is a "number you can change"
- Japanese university GPAs come out structurally low → caused by strict grading standards, scale diversity, and the absence of a GPA culture
- WES (World Education Services) → a nonprofit that converts Japanese GPAs to the U.S. 4.0 scale "fairly." Through cultural adjustment, GPA can rise by close to 0.5–1.0
- Start with the free simulation → check in advance with the WES iGPA Calculator (https://applications.wes.org/igpa-calculator/). Manual work, but completely free
- Pricing → about $168 for Course-by-Course Basic, about $214 for ICAP (as of 2026)
- Timeline → 3–7 weeks in total. If you're applying this year, act right now
- GPA isn't everything → you can supplement with the Optional Essay, GMAT/GRE, and work experience
Don't be shackled by a number called GPA and give up on the option of studying abroad.
Your true ability may be far higher than the grades your Japanese university assigned. WES is a tool for getting that "real ability" fairly recognized.
Start by trying the iGPA Calculator. Your GPA is surely higher than you think. Let's build your application strategy together, with Gradigo.
