Scores Out of 51 as Percentages

Every possible score on a 51-question test or assignment, converted to a percentage and letter grade. Click any row to see the full worked calculation.

Score Percentage Letter Grade Wrong
0/51 0% F 51
1/51 2% F 50
2/51 3.9% F 49
3/51 5.9% F 48
4/51 7.8% F 47
5/51 9.8% F 46
6/51 11.8% F 45
7/51 13.7% F 44
8/51 15.7% F 43
9/51 17.6% F 42
10/51 19.6% F 41
11/51 21.6% F 40
12/51 23.5% F 39
13/51 25.5% F 38
14/51 27.5% F 37
15/51 29.4% F 36
16/51 31.4% F 35
17/51 33.3% F 34
18/51 35.3% F 33
19/51 37.3% F 32
20/51 39.2% F 31
21/51 41.2% F 30
22/51 43.1% F 29
23/51 45.1% F 28
24/51 47.1% F 27
25/51 49% F 26
26/51 51% F 25
27/51 52.9% F 24
28/51 54.9% F 23
29/51 56.9% F 22
30/51 58.8% F 21
31/51 60.8% D 20
32/51 62.7% D 19
33/51 64.7% D 18
34/51 66.7% D 17
35/51 68.6% D 16
36/51 70.6% C 15
37/51 72.5% C 14
38/51 74.5% C 13
39/51 76.5% C 12
40/51 78.4% C 11
41/51 80.4% B 10
42/51 82.4% B 9
43/51 84.3% B 8
44/51 86.3% B 7
45/51 88.2% B 6
46/51 90.2% A 5
47/51 92.2% A 4
48/51 94.1% A 3
49/51 96.1% A 2
50/51 98% A 1
51/51 100% A 0

Use the Test Grade Calculator to interactively grade any 51-question test. Enter the number of questions wrong and get your score instantly, plus a printable grading-scale table.

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