High School GPA Calculator

High School GPA Calculator to calculate weighted and unweighted GPA across all your high-school years. Add courses, credits, and grades, then get an instant GPA summary with a year-by-year breakdown.

High School GPA Calculator
Letter thresholds (percent minimum)
Overall result
3.667 / 4.00
Unweighted GPA
3.667
Weighted GPA
3.667
Core-only GPA
3.667
Total credits
3
Honors adds +0.5 GPA, AP / IB / Dual adds +1.0, capped at your GPA scale.
High-school years
Courses
Course Credits Grade type Grade Subject Action
Courses
Course Credits Grade type Grade Subject Action
Year summary
Year # courses Year credits Year unweighted GPA Year weighted GPA Cumulative unweighted Cumulative weighted
9th Grade 2 2 3.650 3.650 3.650 3.650
10th Grade 1 1 3.700 3.700 3.667 3.667
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Weighted High School GPA: Formula and Example

Unweighted GPA formula

Unweighted GPA = (Sum of (GPA points × course credits)) ÷ (Sum of course credits)

Weighted GPA formula

Weighted GPA uses the same structure, but adds an extra bump for advanced courses. A common weighting method is:

  • Honors: +0.5
  • AP/IB/Dual Enrollment: +1.0
  • Cap the result at your GPA scale (e.g., 4.0 or 5.0)

Example

Suppose you have two 1-credit courses:
English (A) = 4.0, Honors Algebra (B+) = 3.3

  • Unweighted: (4.0×1 + 3.3×1) ÷ 2 = 3.65
  • Weighted (Honors +0.5 on Algebra): (4.0×1 + 3.8×1) ÷ 2 = 3.90

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