GPA Calculator
GPA (Grade Point Average) converts letter grades into a single weighted average that summarizes overall academic performance, on a standard 4.0 scale. This calculator takes a list of courses — each with its credit hours and grade — and computes the weighted GPA automatically, showing exactly how each course contributed to the final number.
How the GPA Calculator Works
Enter each course on its own line as credits followed by a letter grade (or a direct numeric grade point), separated by a comma — for example, “3, A” or “4, B+.” The calculator converts each letter grade into its standard grade point value, multiplies it by that course’s credit hours to get quality points, adds up quality points and credits separately across all courses, then divides total quality points by total credits to get your GPA. This weighting is exactly why a 4-credit course affects your GPA more than a 1-credit course with the same letter grade — it counts proportionally more in the final average.
The Standard 4.0 Grade Scale This Calculator Uses
| 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 |
| C- | 1.7 |
| D+ | 1.3 |
| D | 1.0 |
| D- | 0.7 |
| F | 0.0 |
This is the most common scale used across US colleges and universities, but it isn’t universal. Some schools award A+ a value above 4.0 (commonly 4.3), and grading scales can vary further at the high school level or internationally. This calculator treats A and A+ identically at 4.0 — if your institution specifically awards extra weight for A+, check your school’s official scale, since your actual transcript GPA may run slightly higher than what this calculator shows for the same set of letter grades.
Why a 3.5 Isn’t Just “Halfway Between B and A”
Grade point values aren’t evenly spaced in the way you might assume from looking at the letters alone — the jump from a B+ (3.3) to an A- (3.7) is 0.4 points, while the jump from an A- (3.7) to an A (4.0) is only 0.3 points. This uneven spacing means that improving from a B to a B+ doesn’t move your GPA by the same amount as improving from an A- to an A, even though both represent “one plus sign” of improvement. Understanding this is useful when deciding where to focus effort if you’re trying to raise your GPA by a specific target amount.
Cumulative GPA vs. Semester GPA: Both Use the Same Math
This calculator computes GPA from whatever list of courses you enter — which means it works identically whether you’re calculating a single semester’s GPA or your entire cumulative GPA across every course you’ve taken. The only difference is which courses you include: enter just this term’s classes for a semester GPA, or your full academic history for a cumulative figure. If you already know your current cumulative GPA and total credits and want to see how a specific upcoming semester would change it, you can run this calculator with your prior GPA converted into an equivalent quality-points entry (multiply your current GPA by your total credits, treat that as a single large “credit” line) combined with your new semester’s actual courses.
From GPA to Final Course Grades
GPA is calculated from final letter grades, but figuring out what final grade you’ll actually end up with in a specific course — based on partial results and remaining weighted assignments — is a separate calculation this GPA calculator doesn’t perform. The Grade Calculator handles that different question directly: given your current weighted scores and how much of the course grade remains, it tells you what you need on remaining work to hit a target final grade, which then becomes one line in this GPA calculator once the course is finished.
Weighted GPA for Honors and AP Courses
Some high schools award additional grade point value for honors, AP, or IB courses — commonly adding 0.5 or 1.0 points above the standard scale, so an A in an AP class might count as 5.0 rather than 4.0. This calculator’s standard scale doesn’t automatically apply that kind of institution-specific weighting, but you can approximate it manually by entering a numeric grade point value directly instead of a letter grade for any course that receives special weighting at your school, since the calculator accepts direct numeric input alongside standard letter grades.
Understanding Grade Distributions Across a Transcript
Once you have several semesters of GPA data, looking at the underlying pattern — how consistent your grades have been, whether performance is trending up or down — can be more informative than the single cumulative number alone. If you want to analyze a full list of semester GPAs or individual course grades as a dataset, the Statistics Calculator and Average Calculator can compute the mean, spread, and range across multiple semesters, giving a fuller picture of academic performance over time than cumulative GPA alone shows.
Converting Between GPA Scales
If you need to compare a US-style 4.0 GPA against a different scale — a 100-point percentage system, a 5.0 weighted scale, or an international grading system — that requires a scale-specific conversion this calculator doesn’t perform directly, since conversion factors vary by institution and country rather than following one universal formula. Contact your school’s registrar or the receiving institution for their specific conversion table if you need an official equivalency for transfer or application purposes.
Frequently Asked Questions
How is GPA calculated?
Each course’s letter grade is converted to a grade point value (typically on a 4.0 scale), multiplied by that course’s credit hours to get quality points. Quality points are summed across all courses and divided by total credit hours to produce the weighted GPA.
Does a 1-credit course affect GPA the same as a 4-credit course?
No — GPA is weighted by credit hours, so a course with more credits has a proportionally larger effect on your overall GPA than a course with fewer credits, even if both received the identical letter grade.
Is A+ worth more than a regular A?
It depends on your specific institution. Many schools treat A and A+ identically at 4.0, which is what this calculator assumes by default, but some schools award A+ additional value (commonly 4.3). Check your school’s official grading policy if this distinction affects your calculation.
How do I calculate my cumulative GPA including previous semesters?
Enter every course from every semester you want included as separate lines with their original credits and grades, and the calculator will compute the overall weighted average across all of them together, exactly as your transcript’s cumulative GPA does.
Can this calculator handle weighted GPA for AP or honors classes?
Not automatically — its standard scale treats all letter grades the same regardless of course difficulty. If your school adds extra weight for AP, honors, or IB courses, enter the specific numeric grade point value your school assigns for that course directly instead of using the standard letter grade.