GPA Calculator
Enter your courses, grades, and credit hours to calculate your GPA on a 4.0 scale. Add as many courses as you need.
| Course | Grade | Credits | |
|---|---|---|---|
Weighted on a standard unweighted 4.0 scale. Honors/AP scales vary by school.
How to use this calculator
For each course, enter a course name (optional but helpful for your own reference), select your letter grade, and enter the credit hours the course is worth. Click + Add course for additional rows. Your GPA, total credit hours, and total quality points update automatically with each change.
To calculate a cumulative GPA across multiple semesters, simply enter all courses from all semesters at once. The calculator treats every row the same way — it weights by credit hours, not by semester — so combining courses from different terms gives you a correct cumulative result.
How GPA works
GPA stands for Grade Point Average. It is a single number that summarizes academic performance across many courses by converting letter grades into points and weighting each course by how many credits it carries. A 3-credit lecture and a 1-credit lab are not equal in the GPA calculation — the lecture has three times the influence on your average.
The system works in two steps. First, convert each letter grade to grade points using the standard 4.0 scale (A = 4.0, B = 3.0, C = 2.0, D = 1.0, F = 0.0, with plus and minus variants in between). Second, multiply each course's grade points by its credit hours to get quality points for that course. Sum all the quality points and divide by the total credit hours — that quotient is your GPA.
Because GPA is credit-weighted, courses with more credits matter more. An A in a 4-credit required course does far more to protect your average than an A in a 1-credit elective. Similarly, a failing grade in a 4-credit course is much harder to offset than the same grade in a 1-credit course.
The 4.0 grade scale
The standard unweighted scale used by most US colleges and universities maps grades to points as follows:
- 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 · D- = 0.7
- F = 0.0
Some institutions use a simplified scale that omits plus and minus grades, mapping A → 4.0, B → 3.0, and so on. Others use a 4.3 scale where an A+ earns 4.3. Always check your school's official policy; the scale this calculator uses may not perfectly match every institution.
Worked example
Suppose you took three courses in one semester:
- Biology (4 credits): A → 4.0 × 4 = 16 quality points
- English (3 credits): B+ → 3.3 × 3 = 9.9 quality points
- Statistics (3 credits): A- → 3.7 × 3 = 11.1 quality points
Total quality points: 16 + 9.9 + 11.1 = 37.0
Total credits: 4 + 3 + 3 = 10
GPA: 37.0 ÷ 10 = 3.70
Notice that the Biology course (4 credits) pulls the average toward the A range because it has more weight. If Biology were only 1 credit, the GPA would be lower because the B+ and A- courses would have more relative influence.
How to interpret your GPA
GPA benchmarks differ by context. For undergraduate academic standing, many schools require a 2.0 minimum to remain enrolled and qualify for financial aid. For graduate school applications, a common threshold is 3.0, with competitive programs often expecting 3.5 or higher in the major. Employers in some fields check GPA for entry- level positions, typically with a 3.0 or 3.5 cutoff. Academic honors (Dean's List, cum laude) vary by institution.
A semester GPA can swing significantly from term to term. Your cumulative GPA — calculated across all credits earned — is what appears on your transcript and is what most programs and employers evaluate.
Common mistakes to avoid
- Averaging semester GPAs instead of recalculating from quality points. If you average a 3.8 from a 9-credit semester with a 3.2 from a 15-credit semester, you get 3.5 — but that is wrong. The heavier 15-credit semester should pull the cumulative lower. Always add quality points and divide by total credits.
- Forgetting that plus and minus grades matter. The difference between a B+ (3.3) and a B (3.0) across multiple 3-credit courses can shift your GPA by 0.1–0.2 points — enough to move between honor thresholds.
- Assuming a W counts as an F. A withdrawal (W) does not factor into GPA at most institutions. Enter only courses where you earned a graded result.
- Using a different scale than your school uses. If your school does not give A+ grades or uses a 4.3 scale, this calculator's output may differ slightly from your official transcript GPA.
The formula
Quality points per course = Grade points × Credit hours
GPA = (Σ quality points across all courses) ÷ (Σ credit hours)
How we calculate this
GPA is calculated as the sum of quality points (grade points × credit hours per course) divided by total credit hours, using the standard unweighted 4.0 grade point scale. GPA scales and grading policies vary by institution; results are estimates based on this common scale.
Frequently asked questions
How is GPA calculated?
Multiply each course's grade points by its credit hours to get quality points, sum all quality points across every course, then divide by the total number of credit hours. The result is your credit-weighted grade point average on a 4.0 scale.
What letter grade equals what GPA points?
On the common unweighted 4.0 scale: 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, D- = 0.7, F = 0.0. Some schools use a simplified scale without plus/minus grades — check your institution's grading policy.
What is the difference between weighted and unweighted GPA?
An unweighted GPA caps at 4.0 regardless of course difficulty and is the standard used by most colleges on transcripts. A weighted GPA awards bonus grade points for honors, AP, or IB courses — often allowing scores above 4.0, up to 5.0 or higher. This calculator uses the unweighted 4.0 scale.
How do credit hours affect my GPA?
Credit hours are the multiplier in the quality-points calculation. A course worth 4 credits influences your GPA four times as much as a 1-credit course. If you earn an A in a 4-credit lecture and a C in a 1-credit lab, your GPA stays close to A-level because the lecture dominates the weighted average.
What is a good GPA?
This depends heavily on your school, major, and goals. A 3.0 (B average) is often considered the minimum for graduate school consideration at many programs, while competitive programs may expect 3.5 or higher. Academic honors such as Dean's List typically require a 3.5 or 3.7 each semester. Standards vary widely by institution — always check the specific requirements for your goals.
Can one bad grade hurt my GPA a lot?
It depends on the course's credit weight and how many total credits you have. Early in your academic career with few credits, a failing or very low grade in a 4-credit course can drag your GPA significantly. After accumulating 60 or 90 credits, the same grade has less impact because it is averaged across many more quality points. This is why it is harder to recover from a rough first semester than a rough senior elective.
Does a W (withdrawal) affect my GPA?
In most US higher-education systems, a W on your transcript means you withdrew from the course and it does not factor into your GPA calculation — it contributes neither grade points nor credit hours to the average. However, excessive withdrawals can affect financial aid standing, degree progress, and how graduate admissions committees view your record.
How do I calculate a cumulative GPA across multiple semesters?
Add all the quality points from every semester together, then divide by the total credit hours from every semester. Do not average your semester GPAs — that ignores the fact that semesters with more credits should carry more weight. This calculator lets you enter courses from multiple semesters all at once for an accurate cumulative result.