Grade Calculator - Calculate Academic Grades and GPA

The Grade Calculator is a flexible academic tool that computes your Grade Point Average (GPA) from both letter grades and numerical scores, handling mixed grading systems in a single calculation session. Whether your professor gives you an A− on an essay and a numerical score of 87 on a midterm, or your institution uses number grades throughout, this calculator converts everything to the standard 4.0 scale and produces an accurate weighted GPA. Letter grades are mapped directly: A+ and A equal 4.0, A− equals 3.7, B+ equals 3.3, B equals 3.0, B− equals 2.7, C+ equals 2.3, C equals 2.0, C− equals 1.7, D+ equals 1.3, D equals 1.0, D− equals 0.7, and F equals 0.0. Numerical grades (percentages on a 0–100 scale) are first converted to letter grades using standard thresholds — 93–100 is an A, 90–92 is an A−, 87–89 is a B+, 83–86 is a B, 80–82 is a B−, 77–79 is a C+, 73–76 is a C, 70–72 is a C−, 67–69 is a D+, 63–66 is a D, 60–62 is a D−, and below 60 is an F — and then converted to the corresponding grade point. The core formula is a weighted average: GPA = Σ(grade point × credit hours) ÷ Σ(credit hours). Each course contributes to the final GPA in proportion to its credit weight. A 4-credit Calculus course has four times the influence of a 1-credit lab section. This means that earning a high grade in a high-credit course dramatically boosts your GPA, while a low grade in a heavy course is difficult to offset. Understanding grade calculation is essential for several reasons. Academic standing determinations — Dean's List, honors, probation — all rely on GPA thresholds. Scholarship committees set minimum GPA requirements, often at 3.0, 3.25, or 3.5 depending on the award. Graduate school admissions committees screen applicants using cumulative GPA, with competitive programs expecting 3.5 or above. Employers in consulting, finance, and technology frequently list GPA minimums on job postings for recent graduates. One common application is grade planning: if you know your current GPA and the courses remaining in your term, you can use the calculator to model different grade scenarios and determine what grades you need to reach a target GPA. Another application is transcript verification — cross-checking your registrar's cumulative GPA by entering all courses manually helps catch clerical errors before they appear on official documents sent to employers or schools. The calculator also shows a course-by-course breakdown with the converted letter grade and grade point for each entry, making it easy to spot which courses contributed most to your overall GPA and where there is room for improvement.