GPA Calculator
Calculate your grade point average from course grades and credit hours.
Contribution by course
Formula used
GPA = Σ(grade point × credit hours) / Σ(credit hours)
Grade points (4.0): 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 = 1.0, F = 0.0
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Worked example
Three courses: A (4.0) × 3 credits, B+ (3.3) × 4 credits, B (3.0) × 3 credits.
Σ(grade × credit) = 4.0×3 + 3.3×4 + 3.0×3 = 12 + 13.2 + 9 = 34.2
Σ(credits) = 3 + 4 + 3 = 10 → GPA = 34.2 / 10 = 3.42
Your GPA on the 4.0 scale is a weighted snapshot of your course performance, and what it communicates is not just how many points you earned but how those points were distributed across the workload you carried. Because each course is weighted by its credit hours, a four-credit course in which you earned an A moves your average more than a one-credit course with the same grade, and a poor grade in a heavy course drags it down proportionally further. The 4.0 scale, where A is 4.0, B is 3.0, C is 2.0, D is 1.0 and F is 0.0 with plus and minus steps in between, is the common language of US universities and of many international programs that report on it. A single GPA figure is the shorthand that admissions committees and employers use to compare students from very different institutions on apparently equal footing, which is why it matters that the number is computed the same way everywhere. What it does not tell anyone is which courses were your strengths, whether your performance rose or fell over time, or how hard the curriculum was, so it is a useful summary and a misleading complete story in equal measure. Many students chase a specific target like 3.5 or 3.8 without asking what it means for their particular goal, so the number becomes a talisman rather than a measure of fit.
The most valuable use of this calculator is not at graduation but throughout your studies, at several distinct moments. The first is the post-semester review, when your grades are in but before the registrar publishes the official average, so you can verify your standing and spot an error while there is still time to question it. The second is eligibility checking, because honors lists, dean's lists, academic probation thresholds, scholarships, and transfer programs all publish GPA cutoffs that determine what happens to you next. The third is forward planning, when you want to know what grades you must earn in the coming term to pull a borderline average up into a safer range. Students also use it to test scenarios, such as whether withdrawing from one tough course protects the average more than staying and risking a low grade. Running the number after every term, rather than once at the end, turns it from a verdict you receive into a lever you control, and that shift is what keeps a small slip from becoming a permanent one. It is also worth recalculating immediately after a withdrawn or repeated course posts, because the timing of when a grade enters your record changes the average you are looking at.
Your GPA is only as accurate as the rows you enter, so take a moment with the inputs. List every course for the period you are averaging, including the ones you would rather forget, because leaving out a low grade makes the result falsely reassuring. Match each grade to the correct point on the 4.0 scale, remembering the plus and minus steps — an A minus is 3.7, not 4.0, and a B plus is 3.3 — and small differences across many courses add up. Enter the credit hours exactly as your institution records them, since this is the most common source of error, a three-credit and a four-credit course are not equal in the math. If a course was taken pass or fail, decide deliberately whether it belongs in the average, because including a non-graded pass can distort the weighting in ways that surprise you later. If you are ever unsure whether a particular course counts toward the term GPA, check your school's rules before guessing, because including or excluding the wrong course is the single biggest reason a student's figure disagrees with the official one. Double-check the credit value against your official course catalog rather than memory, because a misremembered credit hour is invisible until the final average looks wrong.
A handful of recurring mistakes make a GPA less trustworthy than it looks. The first is mixing scales, entering grades as if they were on a 10-point or percentage system when this calculator expects 4.0 points, which produces a number in the wrong universe entirely. The second is averaging percentages or raw scores instead of grade points, which ignores credit weighting and lands on a different answer than your transcript will. The third is rounding each course grade before averaging, a small convenience that introduces errors compounding across a full term of rows. The fourth is forgetting that transfer or study-abroad credits may be included or excluded differently by your home institution, so a self-calculated average can diverge from the official one if those rules are ignored. The final trap is treating GPA as the whole measure of you; it says nothing about the difficulty of your major, your improvement over time, or the skills no classroom grade measures, and over-identifying with a single number can push students toward easier courses rather than the ones that serve them. The arithmetic here is exact; the honesty is entirely in the rows you provide. None of these errors changes the formula, but each changes the story the number tells, and a GPA you cannot explain is less useful than a lower one you fully understand.
Frequently asked questions
What is GPA?
GPA stands for Grade Point Average. It is your average grade across courses, weighted by credit hours, usually reported on a 4.0 scale in the US and many other systems.
How is GPA calculated?
Each course grade is converted to a grade point (A is 4.0, B is 3.0, and so on), multiplied by its credit hours, and those products are summed and divided by the total credit hours. Add one row per course below.
Which grade scale does this use?
The common 4.0 scale where A is 4.0, B is 3.0, C is 2.0, D is 1.0, and F is 0.0, with plus and minus steps of 0.3 or 0.7 between them.
Why are credit hours important?
A 4-credit course should count more than a 1-credit course. Weighting by credits means a strong grade in a heavy course moves your GPA more than the same grade in a light course.
Does this convert to a CGPA on 10?
Not directly, but the CGPA calculator on this site applies the same weighting on the 10-point scale, so you can compare both views of the same results.