Thai grading system
In Thailand, university grades run from A (best) to F, and D is the lowest pass. School grades: 4 to 0, lowest pass 1.
Example · Credit-weighted average of 3 courses
Between B+ and A
Good or excellent: your institution’s rule on rounding decides which grade goes on your record. D is the lowest pass.
3 courses, 15 credits.
University grades: A to F
Bachelor's degree courses at most Thai universities.
| Grade | Meaning | Marks | Pass? |
|---|---|---|---|
| A | excellent | 80–100% | Pass |
| B+ | good | 75–79% | Pass |
| B | good | 70–74% | Pass |
| C+ | fair | 65–69% | Pass |
| C | fair | 60–64% | Pass |
| D+ | poor | 55–59% | Pass |
| D | poor | 50–54% | Pass |
| F | fail | 0–49% | Fail |
School grades: 4 to 0
Primary and secondary schools under the national basic education curriculum.
| Grade | Meaning | Marks | Pass? |
|---|---|---|---|
| 4 | excellent | 80–100% | Pass |
| 3.5 | very good | 75–79% | Pass |
| 3 | good | 70–74% | Pass |
| 2.5 | fairly good | 65–69% | Pass |
| 2 | satisfactory | 60–64% | Pass |
| 1.5 | fair | 55–59% | Pass |
| 1 | minimum pass | 50–54% | Pass |
| 0 | fail | 0–49% | Fail |
Thai grades and a US GPA
This page gives no US equivalents for Thai grades: we found no table for them on Wikipedia or from an official source, and we do not make one up. A US university reads a foreign transcript itself or through the credential evaluation service it names, and its conversion is the one that counts.
Send your grades as they are, with the scale above. When a form asks for your average, give it on your own scale and say which scale it is: the converter’s average does exactly that, weighted by credits when you enter them.
What to know about grades in Thailand
- The same eight steps from 4 down to 0 are used at school and at university, where they are written as letters from A to F.
- Some graduate programmes use a finer scale with minus grades, such as A− for 3.67 and B− for 2.67, and D at 1.00 as the lowest pass.
- Courses graded S (satisfactory) or U (unsatisfactory) carry no grade points and stay out of the GPA.
- A cumulative GPA of at least 2.00 is needed to graduate with a bachelor's degree.