Scale used to convert grades, including ECTS grading system.

PolandECTS scaleCambodiaCanadaChinaIndonesiaSri LankaVietnam
2 – failedF, FX49% or below, F0below 60134 - 00
3 - sufficientE50-64%, C-1.0 – 1.360-69235 - 441,0 – 1,5
3,5 – satisfactoryD65-69%, C2.3 – 1.770-742.559 - 452,0 – 2,5
4 – goodC70-79%, B3.3 – 2.775- 84369 – 603,0 – 3,5
4,5 – very goodB80-89%, B+3.785 – 893.584 – 704,0 – 3,5
5 – excellentA90-100%, A4.090-100485 – 1004