Free college GPA calculator: letter grades and credit hours in, GPA on the 4.0 scale out. Pick your school's plus/minus scale; P and W are left out.
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Each course earns quality points: the grade's value on the 4.0 scale times the course's credit hours. Your GPA is the total quality points divided by the total credit hours of graded courses.
Because of the credit hours, a 4-credit course moves your GPA a third more than a 3-credit one, and a 1-credit lab barely moves it at all.
Calculus I, B+, 4 credits; Composition, A, 3 credits; Intro to Psychology, A-, 3 credits; Chemistry lab, B, 1 credit; First-year seminar, Pass, 1 credit.
On the A- = 3.7 scale: 3.3 x 4 + 4.0 x 3 + 3.7 x 3 + 3.0 x 1 = 39.3 quality points over 11 graded credits = 3.57. The pass/fail seminar is left out.
On the A- = 3.67 scale the same grades give 39.33 / 11 = 3.58. The scale rarely changes a GPA by more than a few hundredths, but it can matter near a cut-off.
Multiply each course's grade value (A = 4.0, B = 3.0 and so on) by its credit hours, add those quality points, and divide by the total credit hours of the courses that got a letter grade.
At most colleges a Pass earns credit but no grade points, so it is left out of the GPA, and so are W (withdrawn) and I (incomplete). A Fail under pass/fail is counted as an F at some schools, so check your catalog.
It depends on the school. Many cap the scale at 4.0, so an A+ and an A are both 4.0; others give 4.33. Switch the option to match your college.
Because GPA is weighted by them. A B in a 4-credit course costs more than a B in a 1-credit lab, so the same letter grades can give different GPAs.
A 3.0 is the common cut-off for good standing in many programs and scholarships, 3.5 is typical for dean's list, and many graduate programs look for 3.0 or higher. Your college's own thresholds are the ones that count.