Cumulative GPA Calculator
Combine your prior GPA with a new semester.
Results update as you type.
How it works
A cumulative GPA calculator updates your overall grade point average once a new semester's marks are in, without making you re-enter every course you have ever taken. You provide your existing cumulative GPA and the total credits it was built on, then the GPA you just earned this term and the credits that term carried, and the tool blends the two into a single updated figure. The key is that it weights each part by its credits, so a heavy 15-credit semester shifts your average more than a light one, exactly as your registrar computes it. This is the correct way to roll a semester forward, and it is far more accurate than the common mistake of simply averaging your old GPA and your new GPA together. That shortcut ignores how many credits each represents: if your cumulative rests on 90 credits and the new term is only 12, the new term should barely nudge the total, not pull it halfway. By reconstructing the quality points behind each GPA — multiplying GPA by credits — and pooling them over the combined credit total, the calculator honours that difference. Students use it to see the real impact of a term before grades are even finalised, to work out how much a strong semester can raise a struggling average, and to plan the credits and grades still needed to reach a target. It gives an accurate, transcript-matching cumulative GPA in a single step.
cumulative = (GPA₁ × credits₁ + GPA₂ × credits₂) ÷ (credits₁ + credits₂)
A GPA is total quality points divided by total credits, so multiplying each GPA by its credit count reconstructs the quality points behind it. Adding the quality points from your prior record and the new semester, then dividing by the combined credits, produces a properly credit-weighted overall average. This is why you cannot simply average two GPAs: doing so would treat a 12-credit term as equal to a 90-credit history. Weighting by credits ensures each term influences the cumulative figure in exact proportion to its size.
Source:Standard 4.0 GPA scale
We review all our tools from time to time to ensure accuracy.
Worked example
How to use this calculator
- 1
Enter your values
Enter current cumulative gpa, credits earned so far, new semester gpa and new semester credits.
- 2
Adjust the options
Fine-tune any options to match your situation.
- 3
Read your result
New cumulative GPA updates instantly as you type — no button to press.
Frequently asked questions
Why can't I just average my old and new GPA?
Because a simple average ignores how many credits each GPA represents. If your cumulative GPA is built on 90 credits and your new semester is only 12, the new term should move your overall average only slightly. Averaging the two numbers directly would give the small term the same influence as your entire history, overstating its effect. Weighting by credits, as this calculator does, is the only way to match the figure your transcript will show.
Where do I find my current cumulative GPA and credits?
Both appear on your official transcript or in your school's student portal, usually on the same summary line. The cumulative GPA is your overall grade point average to date, and the credits earned or attempted figure is the total the GPA is based on. Use attempted credits that carry a grade, since pass or fail and audited courses may not factor into the GPA the same way. When unsure, your registrar's office can confirm the exact numbers.
How can I project my GPA before grades post?
Estimate the GPA you expect this semester based on your current standing in each course, enter it with the term's credits, and the calculator shows the cumulative figure that outcome would produce. Try a few scenarios — a strong term, an average one, a weak one — to see the realistic range. This is a powerful planning tool for deciding how hard to push in the final weeks and understanding how much a single semester can actually move your overall average.
Can I chain several semesters together?
Yes. Calculate the cumulative GPA after the first new semester, then treat that result and the updated total credits as your current figures and feed in the next semester. Repeating this rolls your GPA forward term by term. Alternatively, a full GPA calculator lets you enter every course from every semester at once. Both approaches give the same answer as long as you keep the credit totals accurate at each step.
Does this handle retaken courses or grade replacement?
Not automatically. Policies for retakes vary — some schools replace the original grade, others average both attempts, and the effect on your credits differs accordingly. This calculator blends two GPA-and-credit pairs as entered, so if you have retakes, first work out your correct current cumulative GPA and credit total under your school's specific policy, then use those adjusted figures here. Your registrar can clarify how a repeated course affects your official record.