Out of 80 Grade Chart

Every possible score on a 80-question or 80-point test, quiz or assignment, with the percentage and letter grade. Each question is worth 1.25%.

68/80 = 85% (B)
64/80 = 80% (B-)
60/80 = 75% (C)

A range (90%+)

72/80

Miss up to 8

B range (80%+)

64/80

Miss up to 16

C range (70%+)

56/80

Miss up to 24

D range (60%+)

48/80

Miss up to 32

Grades out of 80
Score	Wrong	Percent	Letter	GPA
80/80	0	100%	A+	4.0
79/80	1	98.75%	A+	4.0
78/80	2	97.5%	A+	4.0
77/80	3	96.25%	A	4.0
76/80	4	95%	A	4.0
75/80	5	93.75%	A	4.0
74/80	6	92.5%	A-	3.7
73/80	7	91.25%	A-	3.7
72/80	8	90%	A-	3.7
71/80	9	88.75%	B+	3.3
70/80	10	87.5%	B+	3.3
69/80	11	86.25%	B	3.0
68/80	12	85%	B	3.0
67/80	13	83.75%	B	3.0
66/80	14	82.5%	B-	2.7
65/80	15	81.25%	B-	2.7
64/80	16	80%	B-	2.7
63/80	17	78.75%	C+	2.3
62/80	18	77.5%	C+	2.3
61/80	19	76.25%	C	2.0
60/80	20	75%	C	2.0
59/80	21	73.75%	C	2.0
58/80	22	72.5%	C-	1.7
57/80	23	71.25%	C-	1.7
56/80	24	70%	C-	1.7
55/80	25	68.75%	D+	1.3
54/80	26	67.5%	D+	1.3
53/80	27	66.25%	D	1.0
52/80	28	65%	D	1.0
51/80	29	63.75%	D	1.0
50/80	30	62.5%	D-	0.7
49/80	31	61.25%	D-	0.7
48/80	32	60%	D-	0.7
47/80	33	58.75%	F	0.0
46/80	34	57.5%	F	0.0
45/80	35	56.25%	F	0.0
44/80	36	55%	F	0.0
43/80	37	53.75%	F	0.0
42/80	38	52.5%	F	0.0
41/80	39	51.25%	F	0.0
40/80	40	50%	F	0.0
39/80	41	48.75%	F	0.0
38/80	42	47.5%	F	0.0
37/80	43	46.25%	F	0.0
36/80	44	45%	F	0.0
35/80	45	43.75%	F	0.0
34/80	46	42.5%	F	0.0
33/80	47	41.25%	F	0.0
32/80	48	40%	F	0.0
31/80	49	38.75%	F	0.0
30/80	50	37.5%	F	0.0
29/80	51	36.25%	F	0.0
28/80	52	35%	F	0.0
27/80	53	33.75%	F	0.0
26/80	54	32.5%	F	0.0
25/80	55	31.25%	F	0.0
24/80	56	30%	F	0.0
23/80	57	28.75%	F	0.0
22/80	58	27.5%	F	0.0
21/80	59	26.25%	F	0.0
20/80	60	25%	F	0.0
19/80	61	23.75%	F	0.0
18/80	62	22.5%	F	0.0
17/80	63	21.25%	F	0.0
16/80	64	20%	F	0.0
15/80	65	18.75%	F	0.0
14/80	66	17.5%	F	0.0
13/80	67	16.25%	F	0.0
12/80	68	15%	F	0.0
11/80	69	13.75%	F	0.0
10/80	70	12.5%	F	0.0
9/80	71	11.25%	F	0.0
8/80	72	10%	F	0.0
7/80	73	8.75%	F	0.0
6/80	74	7.5%	F	0.0
5/80	75	6.25%	F	0.0
4/80	76	5%	F	0.0
3/80	77	3.75%	F	0.0
2/80	78	2.5%	F	0.0
1/80	79	1.25%	F	0.0
0/80	80	0%	F	0.0

How to calculate a grade out of 80

Percent = score ÷ 80 × 100

For example, 64 out of 80 is 64 ÷ 80 = 0.8, × 100 = 80%, a B-. Every question you miss costs 1.25 percentage points, so the gap between letters is about 2 questions.

Letters follow the standard U.S. plus/minus grading scale. If your teacher uses different cutoffs (like 93/85/77/70), build a custom chart with the EZ Grader. For a single score, the test grade calculator is quickest.

Common questions

What is 68 out of 80 as a percentage?

68/80 is 85%, which is a B on the standard U.S. grading scale (3.0 GPA points). That's 12 wrong. 2 more points (70/80) would make it a B+.

What is 64 out of 80 as a percentage?

64/80 is 80%, which is a B- on the standard U.S. grading scale (2.7 GPA points). That's 16 wrong. 3 more points (67/80) would make it a B.

What is 60 out of 80 as a percentage?

60/80 is 75%, which is a C on the standard U.S. grading scale (2.0 GPA points). That's 20 wrong. 2 more points (62/80) would make it a C+.

What is 79 out of 80 as a percentage?

79/80 is 98.75%, which is an A+ on the standard U.S. grading scale (4.0 GPA points). That's 1 wrong.

What is 78 out of 80 as a percentage?

78/80 is 97.5%, which is an A+ on the standard U.S. grading scale (4.0 GPA points). That's 2 wrong.

How many can you miss out of 80 and still get an A?

You can miss 8 and still get at least 90% (an A-). 72/80 = 90%.