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High School GPA Calculator

Calculate both unweighted 4.0 and weighted 5.0 GPAs side-by-side with course-type weight adjustments for Honors, AP, IB, and Dual Enrollment.

Grading Mode:
Course NameCreditsGradeCourse TypeActions
Calculated GPA
0.00
Total Credits0
Total Quality Points0.00
Grading ScaleStandard 4.0 Scale
How was this GPA calculated?

Grade Point Average (GPA) is computed by dividing total quality points earned by total credit hours attempted:

GPA=
Total Quality PointsTotal Credit Hours
=
∑ (Course Credits × Grade Points)∑ Course Credits

Each course earns quality points equal to its credit hours multiplied by its numeric grade point value (e.g., 3 credits × 4.0 for an A = 12.0 quality points).

High School GPA & College Admissions

High schools often report two distinct GPAs on student transcripts: an unweighted GPA capped at 4.00, and a weighted GPA that can reach 5.00+ to reflect academic rigor.

Unweighted 4.0 System

All classes are treated equally regardless of difficulty. An A in AP Physics yields 4.00 points, identical to an A in regular Physical Education.

Weighted 5.0 System

Awards an extra +0.5 for Honors classes (e.g., A = 4.50) and +1.0 for AP, IB, and Dual Enrollment courses (e.g., A = 5.00).

Frequently Asked Questions

Key takeaway: Yes, a 5.0 GPA is possible in weighted high school grading systems when taking Advanced Placement (AP), International Baccalaureate (IB), or Dual Enrollment courses.

On an unweighted scale, the maximum is always 4.0 (all A’s). However, many high schools award a 1.0 quality point bonus for AP/IB courses (turning an A from 4.0 to 5.0). A student taking exclusively AP/IB courses and earning straight A’s will graduate with a 5.0 weighted GPA.

Key takeaway: An unweighted 4.0 (straight A’s throughout an entire academic career) is relatively rare, achieved by roughly 2% to 10% of students depending on institutional rigor.

Maintaining an unweighted 4.0 requires earning an A or A+ in every single class without receiving a single A- (on strict plus/minus scales) or B. In college, especially in rigorous STEM or pre-med curricula, a 4.0 cumulative GPA is an exceptional achievement.

Key takeaway: Yes, a 4.7 GPA is achievable on weighted high school grading scales that add extra grade points for honors (0.5) and AP/IB (1.0) courses.

If a high school student completes 14 AP/IB classes with all A’s (5.0 each) and 6 regular required classes with all A’s (4.0 each), their weighted GPA will be (14×5.0 + 6×4.0) / 20 = 94 / 20 = 4.70. It is impossible on an unweighted 4.0 scale.

Key takeaway: A single B lowers a perfect 4.0 cumulative GPA slightly, but its overall mathematical effect is minor as you accumulate more credit hours.

For example, if you complete thirty 3-credit courses (90 credits) with 29 A’s and 1 B, your cumulative GPA drops from 4.00 to 3.97. A 3.97 remains in the top percentile of applicants for virtually all competitive internships, medical schools, law schools, and honors societies.

Key takeaway: One C will mathematically prevent a perfect 4.00, but it will not ruin your academic or career trajectory.

With 120 total college credits, a single C in a 3-credit course combined with all other A’s results in a 3.95 cumulative GPA. Graduate admissions and employers look at the overall trend, difficulty of coursework, and capstone performance rather than an isolated outlier.

Key takeaway: Unweighted GPA evaluates all classes on a 0.0 to 4.0 scale regardless of difficulty, while Weighted GPA awards extra quality points (up to 5.0) for honors, AP, and IB coursework.

In an unweighted system, an "A" in an introductory elective and an "A" in AP Chemistry both receive 4.0 points. In a weighted system, advanced courses receive extra weighting (typically +0.5 for honors and +1.0 for AP/IB) to reward academic challenge and reflect course rigor.