Transfer each number grade to its letter grade equivalent. Courses may have different grade designations so check your syllabus or ask your professor for more information.
A+ = 97 to 100 percent
A = 94 to 96 percent
A- = 90 to 93 percent
B+ = 87 to 89 percent
B = 84 to 86 percent
B- = 80 to 83 percent
C+ = 77 to 79 percent
C = 74 to 76 percent
C- = 70 to 73 percent
D+ = 67 to 69 percent
D = 64 to 66 percent
D- = 60 to 63 percent
F or U = 0 to 59 percent
Translate the letter grade to a decimal number of quality points according to your college or university's grade point system. Typically, this translates as follows:
A+ = 4.3
A = 4.0
A- = 3.7
B+ = 3.3
B = 3.0
B- = 2.7
C+ = 2.3
C = 2.0
C- = 1.7
D+ = 1.3
D = 1.0
D- = 0.7
F = 0.0
Multiply each quality point equivalent to your letter grade by the number of credit hours for the corresponding course. For example:
Biology 101 = Score 89 percent = Letter grade B+ = Point equivalent = 3.3
3.3 x 4 credit hours = 13.2 quality points
Repeat this process for each course.
Add each course's quality points together and divide the total by the number of credit hours attempted.
Example:
Biology 101 (4 credits) = 13.2 quality points
Communications (3 credits) = 12.0 quality points
Algebra II (3 credits) = 9.0 quality points
History I (3 credits) = 11.1 quality points
Intro to Music (3 credits) = 8.1 quality points
13.2 + 12.0 + 9.0 + 11.1 + 8.1 = 53.4 total quality points
4 + 3 + 3 + 3 + 3 =16 credit hours
53.4 / 16 = 3.34 Grade Point Average