How is cumulative GPA calculated across semesters?

Each course contributes quality points equal to its grade points (0 to 4.0) multiplied by its credit hours. Cumulative GPA is the sum of all quality points divided by the sum of all credit hours, so a heavier course moves your GPA more than a lighter one. This is the standard credit-weighted method used by most US colleges.

How do letter grades map to the 4.0 scale?

The planner uses the common scale: A+ and A are 4.0, A- is 3.7, B+ is 3.3, B is 3.0, B- is 2.7, and so on down to D- at 0.7 and F at 0.0. Plus and minus grades each shift the value by roughly 0.3, which is why an A- counts slightly less than a straight A.

Can I mix percentage and letter grades?

Yes. Each course row has its own Type selector. Choose Letter to pick from a dropdown, or Percent to type a score from 0 to 100. Percentages are converted to grade points using a standard band table (for example 93 to 96 percent maps to an A at 4.0), so you can combine syllabi that grade differently in the same plan.

What does the target-GPA planner do?

It works backwards from a goal. Given your current credits and quality points, plus how many credits you plan to take next term, it solves for the average GPA those new credits must earn to lift your cumulative GPA to the target. If the required figure is above 4.0 it tells you the goal cannot be reached in a single term.

Is my data saved if I close the tab?

Yes. Your semesters, courses and grades are stored in your browser using localStorage, so the plan is still there when you return on the same device and browser. Nothing is ever sent to a server, and you can wipe everything with the Reset button.

Why is my GPA different from my school's official number?

Schools vary: some count A+ as 4.3, some exclude pass or fail courses, some weight honors and AP classes higher, and some round differently. This planner uses an unweighted 4.0 scale with A+ capped at 4.0. Use it for planning and what-if scenarios, and always confirm the official figure with your registrar.

Semester GPA Planner

A semester GPA planner that turns a messy pile of grades into a clear picture of where you stand and where you are heading. Add a card for each term, drop in your courses with their credit hours and a letter or percentage grade, and the tool computes each semester’s GPA and your running cumulative GPA on the standard 4.0 scale — instantly, as you type. It is built for students mapping out a degree, anyone trying to recover a GPA after a rough term, and applicants who need to hit a specific threshold for a scholarship, transfer, or graduate program.

Unlike a one-shot calculator, this planner is stateful: every semester and course is remembered in your browser, so you can come back and update grades as the term unfolds. It also runs the calculation in reverse — tell it the cumulative GPA you are aiming for and how many credits you will take next term, and it tells you the exact average GPA those credits must earn. That single number is far more actionable than a vague “study harder.”

How it works

GPA is a credit-weighted average, not a simple mean of your grades. Every course earns quality points equal to its grade points multiplied by its credit hours. A 4-credit class pulls on your average twice as hard as a 2-credit elective. To find any GPA, the tool sums the quality points and divides by the total credit hours:

GPA = total quality points ⁄ total credit hours

Letter grades convert on the familiar scale where A and A+ are 4.0, A- is 3.7, B+ is 3.3, B is 3.0, and so on. When a course is set to percent, the score is mapped to grade points through a standard band table — for example 93 to 96 percent becomes an A at 4.0, and 90 to 92 becomes an A- at 3.7. Because each row carries its own grade type, you can mix percentage-graded and letter-graded courses inside the same semester without converting anything by hand.

The target-GPA planner rearranges the same formula. If you currently have Q quality points across C credits and plan to add F more credits, the average grade points x those new credits need to reach a target T satisfies T = (Q + x·F) ⁄ (C + F), which solves to x = (T·(C + F) − Q) ⁄ F. The tool flags when that required value climbs above the 4.0 ceiling, meaning the goal needs more than one term.

Example

Suppose your first semester has Calculus (4 credits, grade B+), Writing (3 credits, A-), and Chemistry (4 credits, B). Calculus contributes 4 × 3.3 = 13.2 quality points, Writing 3 × 3.7 = 11.1, and Chemistry 4 × 3.0 = 12.0, for 36.3 quality points over 11 credits — a semester GPA of about 3.30.

Now you aim for a 3.50 cumulative GPA and plan 15 credits next term. The planner solves (3.50 × 26 − 36.3) ⁄ 15, which works out to roughly a 3.66 average across those 15 credits. That is a concrete, reachable goal you can build a study plan around.

Course	Credits	Grade	Points	Quality points
Calculus	4	B+	3.3	13.2
Writing	3	A-	3.7	11.1
Chemistry	4	B	3.0	12.0
Semester GPA	11	—	—	3.30

Every number is computed in your browser, saved locally, and exportable as a CSV — nothing is uploaded or stored on a server.