GPA Calculator

GPA is the single most-watched academic metric for students — it determines scholarship eligibility, academic probation status, graduate school admissions, and honor society membership. But calculating it correctly requires understanding credit weighting: a 4-credit science lecture and a 1-credit seminar do not contribute equally to your GPA. This calculator uses the standard 4.0 scale and weights each course grade by its credit hours, so a strong performance in a high-credit course has proportionally more impact. Enter grades and credits for up to six courses and toggle optional courses on or off to model different scenarios — for example, to see how one poor grade affects the semester total, or how adding a retaken course changes your average.

GPA = Σ(grade points × credits) ÷ Σ(credits). For each active course, the letter grade is mapped to a grade-point value on the standard 4.0 scale (A/A+ = 4.0, A− = 3.7, B+ = 3.3, B = 3.0, and so on down to F = 0.0). That grade-point value is multiplied by the course's credit hours to produce quality points. Quality points for all active courses are summed, then divided by the total credit hours to give the weighted GPA. This is identical to the method used by most US universities. Courses toggled off via the Include toggle are excluded from both the numerator and denominator, allowing partial-semester or hypothetical calculations.