How GPA Is Calculated: High School and College

Step 1: Convert each letter grade to its numeric equivalent. A/A+ = 4.0, A− = 3.7, B+ = 3.3, B = 3.0, B− = 2.7, C+ = 2.3, C = 2.0, C− = 1.7, D+ = 1.3, D = 1.0, F = 0.0.

Step 2: Multiply each grade value by the number of credits (or count each course as 1 credit if all are equal).

Step 3: Sum the products (total quality points). Step 4: Divide by total credits. That is your GPA.

Example: English (B+ = 3.3, 3 credits), Math (A = 4.0, 4 credits), History (B = 3.0, 3 credits). Quality points: 9.9 + 16.0 + 9.0 = 34.9. Credits: 10. GPA = 34.9 ÷ 10 = 3.49.

Weighted GPA rewards students who take harder courses. The most common system adds 1.0 for AP/IB courses and 0.5 for Honors.

Example: AP Chemistry (A = 5.0), Honors English (B+ = 3.8), Regular History (A = 4.0). If each is 1 credit: (5.0 + 3.8 + 4.0) ÷ 3 = 4.27. This exceeds 4.0, which is normal for weighted GPAs.

Not all schools use the same weighting scale, which is why colleges often recalculate GPA using their own formula.

College courses carry different credit hours (typically 1–5), so you must weight each grade by its credit hours.

Example semester: Biology 4 credits (B+ = 3.3), Calculus 4 credits (A = 4.0), English 3 credits (A− = 3.7), Elective 2 credits (B = 3.0).

Quality points: 13.2 + 16.0 + 11.1 + 6.0 = 46.3. Total credits: 13. Semester GPA = 46.3 ÷ 13 = 3.56.

Cumulative GPA uses the same formula but sums quality points and credits across all semesters. Use the GPA Calculator to compute this instantly.

Context matters. For college admissions: 3.5+ unweighted is competitive for selective schools; 3.7+ for highly selective. For graduate school: 3.0+ is the minimum for most programs; 3.5+ for competitive ones.

For employment: most employers who check GPA look for 3.0+. In fields like consulting and investment banking, the threshold is often 3.5+.

Remember: GPA is one factor among many. Course difficulty, trend (improving over time), extracurriculars, and test scores all matter.