Calculate your weighted college GPA (Grade Point Average) on the standard 4.0 scale. List each course's letter grade and credit hours, and this calculator does the weighted math for you — useful for checking eligibility for honors, scholarships, or grad school applications.
Each grade is converted to grade points on a 4.0 scale, multiplied by its credit hours, then divided by total credits.
Grade Point Average (GPA) converts letter grades into a numeric scale and averages them, typically weighted by the number of credit hours each course is worth. This weighting means a 4-credit course affects your GPA twice as much as a 2-credit course.
A student with an A (4.0) in a 3-credit course and a B (3.0) in a 4-credit course has: (4.0×3 + 3.0×4) / (3+4) = 24/7 = 3.43 GPA — closer to the B because the B carried more credit weight.
| Letter grade | Grade points |
|---|---|
| A / A+ | 4.0 |
| A− | 3.7 |
| B+ | 3.3 |
| B | 3.0 |
| B− | 2.7 |
| C+ | 2.3 |
| C | 2.0 |
| D | 1.0 |
| F | 0.0 |
An unweighted GPA treats all courses the same regardless of difficulty. A weighted GPA (common in US high schools) gives extra grade points for honors, AP, or IB courses — often adding 0.5 to 1.0 points to the standard scale — to reflect their added academic rigor.
Example 1 — Simple semester: A student takes 4 courses, each 3 credits, earning A, B+, A−, and C. GPA = (4.0+3.3+3.7+2.0) × 3 / 12 = 13.0 × 3 / 12 = 3.25.
Example 2 — Mixed credit hours: A student earns an A (4.0) in a 4-credit course, a B (3.0) in a 3-credit course, and a C+ (2.3) in a 2-credit course: (4.0×4 + 3.0×3 + 2.3×2) / 9 = (16 + 9 + 4.6) / 9 = 3.29 GPA.
Example 3 — Cumulative GPA across two semesters: Semester 1: 3.5 GPA over 15 credits (52.5 quality points). Semester 2: 3.2 GPA over 16 credits (51.2 quality points). Cumulative GPA = (52.5+51.2) / (15+16) = 103.7/31 ≈ 3.35.
| Letter | Typical percentage range |
|---|---|
| A | 93–100% |
| B | 83–86% |
| C | 73–76% |
| D | 63–66% |
| F | Below 60% |
Does this work as a middle school or junior high GPA calculator? Yes — enter each course's grade and credit hours the same way as for high school or college; note that many middle schools don't officially calculate GPA, so check with your school on how it's used.
Why does a 4-credit B affect my GPA more than a 2-credit A? GPA is credit-weighted, so courses worth more credit hours carry proportionally more influence on the overall average.
What's the difference between GPA scales like 4.0 and 4.3? Some institutions add extra grade points for A+ grades (up to 4.3), while others cap at 4.0 for any A-level grade — always check your school's specific scale.
Does a pass/fail course affect GPA? Typically no — pass/fail courses are usually excluded from GPA calculation, though they still count toward credit requirements.
How do I calculate the GPA I need in my remaining semesters? Multiply your target cumulative GPA by your total planned credits, subtract the quality points already earned, then divide by the remaining credits to find the average GPA needed going forward.
Do all schools use the same GPA scale? No — while 4.0 is most common in the US, some schools use 4.3, others use percentage-based or different regional scales entirely, so GPA isn't always directly comparable across institutions.
Does GPA reset each year? No — GPA is normally cumulative across your entire enrollment, though some calculators or reports can show a semester-only GPA alongside the cumulative figure.
How does retaking a failed course affect GPA? Policies vary — some schools replace the old grade entirely (grade replacement), some average both attempts, and some count both grades in the GPA regardless of retake.
Two courses — a 4-credit class with an A (4.0) and a 3-credit class with a B (3.0) — give a weighted GPA of (4×4.0 + 3×3.0) / (4+3) = 25/7 ≈ 3.57, not a simple average of 3.5, because the credit hours are weighted differently.
Grade point: A numeric value assigned to a letter grade, commonly on a 4.0 scale.
Weighted GPA: A GPA calculation that accounts for course credit hours or added difficulty (e.g., AP/honors courses).
Credit hour: A unit representing the weight or time value of a course, used to weight GPA calculations.