Marks, Scores & Ratio Percentage Directory
Convert academic test marks, classroom quizzes, and numerical proportions into exact percentages and letter grades.
Standard Academic Grade Scale & GPA Equivalents
| Percentage Range | Letter Grade | Standard GPA | Evaluation Standing |
|---|---|---|---|
| 90% – 100% | A+ | 4.0 | High Honors / Outstanding |
| 80% – 89% | A | 3.7 – 3.9 | Excellent |
| 70% – 79% | B | 3.0 – 3.3 | Good / Above Average |
| 60% – 69% | C | 2.0 – 2.7 | Satisfactory / Average |
| 50% – 59% | D | 1.0 – 1.7 | Minimum Passing |
| Below 50% | F | 0.0 | Fail |
Cluster 1: Quiz & Assignment Scores (Out of 10, 15, 20, 25)
Quick conversion links for classroom pop-quizzes, homework, and weekly assignments:
1 / 10 (10%)2 / 10 (20%)3 / 10 (30%)4 / 10 (40%)5 / 10 (50%)6 / 10 (60%)7 / 10 (70%)8 / 10 (80%)9 / 10 (90%)10 / 10 (100%)1 / 15 (6.6667%)2 / 15 (13.3333%)3 / 15 (20%)4 / 15 (26.6667%)5 / 15 (33.3333%)6 / 15 (40%)7 / 15 (46.6667%)8 / 15 (53.3333%)9 / 15 (60%)10 / 15 (66.6667%)11 / 15 (73.3333%)12 / 15 (80%)13 / 15 (86.6667%)14 / 15 (93.3333%)15 / 15 (100%)1 / 20 (5%)2 / 20 (10%)3 / 20 (15%)4 / 20 (20%)5 / 20 (25%)6 / 20 (30%)7 / 20 (35%)8 / 20 (40%)9 / 20 (45%)10 / 20 (50%)11 / 20 (55%)12 / 20 (60%)13 / 20 (65%)14 / 20 (70%)15 / 20 (75%)16 / 20 (80%)17 / 20 (85%)18 / 20 (90%)19 / 20 (95%)20 / 20 (100%)1 / 25 (4%)2 / 25 (8%)3 / 25 (12%)4 / 25 (16%)5 / 25 (20%)6 / 25 (24%)7 / 25 (28%)8 / 25 (32%)9 / 25 (36%)10 / 25 (40%)11 / 25 (44%)12 / 25 (48%)13 / 25 (52%)14 / 25 (56%)15 / 25 (60%)16 / 25 (64%)17 / 25 (68%)18 / 25 (72%)19 / 25 (76%)20 / 25 (80%)
Cluster 2: Mid-Term & Lab Exams (Out of 40, 50, 75, 80)
Percentage conversions for mid-term assessments, lab tests, and module grading:
5 / 40 (12.5%)7 / 40 (17.5%)9 / 40 (22.5%)11 / 40 (27.5%)13 / 40 (32.5%)15 / 40 (37.5%)17 / 40 (42.5%)19 / 40 (47.5%)21 / 40 (52.5%)23 / 40 (57.5%)25 / 40 (62.5%)27 / 40 (67.5%)29 / 40 (72.5%)5 / 50 (10%)7 / 50 (14%)9 / 50 (18%)11 / 50 (22%)13 / 50 (26%)15 / 50 (30%)17 / 50 (34%)19 / 50 (38%)21 / 50 (42%)23 / 50 (46%)25 / 50 (50%)27 / 50 (54%)29 / 50 (58%)5 / 75 (6.6667%)7 / 75 (9.3333%)9 / 75 (12%)11 / 75 (14.6667%)13 / 75 (17.3333%)15 / 75 (20%)17 / 75 (22.6667%)19 / 75 (25.3333%)21 / 75 (28%)23 / 75 (30.6667%)25 / 75 (33.3333%)27 / 75 (36%)29 / 75 (38.6667%)5 / 80 (6.25%)7 / 80 (8.75%)9 / 80 (11.25%)11 / 80 (13.75%)13 / 80 (16.25%)15 / 80 (18.75%)17 / 80 (21.25%)19 / 80 (23.75%)21 / 80 (26.25%)23 / 80 (28.75%)25 / 80 (31.25%)27 / 80 (33.75%)29 / 80 (36.25%)
Cluster 3: Finals & Board Examinations (Out of 100, 150, 200, 500)
Standard semester finals, annual board exam percentages, and large aggregate scores:
10 / 100 (10%)12 / 100 (12%)14 / 100 (14%)16 / 100 (16%)18 / 100 (18%)20 / 100 (20%)22 / 100 (22%)24 / 100 (24%)26 / 100 (26%)28 / 100 (28%)30 / 100 (30%)10 / 150 (6.6667%)12 / 150 (8%)14 / 150 (9.3333%)16 / 150 (10.6667%)18 / 150 (12%)20 / 150 (13.3333%)22 / 150 (14.6667%)24 / 150 (16%)26 / 150 (17.3333%)28 / 150 (18.6667%)30 / 150 (20%)10 / 200 (5%)12 / 200 (6%)14 / 200 (7%)16 / 200 (8%)18 / 200 (9%)20 / 200 (10%)22 / 200 (11%)24 / 200 (12%)26 / 200 (13%)28 / 200 (14%)30 / 200 (15%)10 / 500 (2%)12 / 500 (2.4%)14 / 500 (2.8%)16 / 500 (3.2%)18 / 500 (3.6%)20 / 500 (4%)22 / 500 (4.4%)24 / 500 (4.8%)26 / 500 (5.2%)28 / 500 (5.6%)30 / 500 (6%)