About this calculator
A GPA is not a simple average of your grades — it is a credit-weighted one. An A in a 4-credit lab course moves your GPA more than an A in a 1-credit seminar, exactly in proportion to the hours. That weighting is why one bad grade in a heavy course hurts so much, and why it takes several good grades in equally heavy courses to repair.
This calculator uses the standard US 4.0 scale (A = 4.0, A− = 3.7, B+ = 3.3, and so on). Some schools differ in details — a few award 4.3 for an A+, some do not use plus/minus at all, and graduate programs often count differently. If your transcript matters (scholarship cutoffs, NCAA eligibility), check your school's exact scale and adjust: on a no-plus/minus scale, treat every grade as its plain-letter value.
How to use it
- For each course, pick the letter grade and enter its credit hours.
- Leave unused rows set to "— (no course)".
- Your GPA updates live; grade points earned and total credits are shown beneath.
The formula
Each course contributes grade points times its credits to the numerator. Divide by total credits and you have the weighted average on the 4.0 scale. A course's leverage over your GPA is exactly its share of total credits — which is also the math for planning how to raise a cumulative GPA.
Worked example
Four courses — an A in a 3-credit class (12.0 points), a B+ in a 4-credit class (13.2), an A− in a 3-credit class (11.1) and a B in a 2-credit class (6.0) — total 42.3 points over 12 credits: a 3.53 GPA for the semester. Notice the 4-credit B+ contributed more than the 3-credit A.
Frequently asked questions
How do I raise my cumulative GPA?
Cumulative GPA moves according to the same weighting, against all the credits you have already banked. The formula: needed semester GPA = (target × total credits after − current × credits so far) ÷ new credits. With 60 credits at 3.2, reaching 3.4 in one 15-credit semester would take a 4.2 — impossible; over two semesters it takes 3.8 — hard, but real. The lesson: GPA repair is a multi-semester project, and it gets harder the more credits you have banked.
What GPA do I need for honors (cum laude)?
It varies by school, but common Latin honors thresholds are 3.5 (cum laude), 3.7 (magna cum laude) and 3.9 (summa cum laude). Dean's list is often 3.5+ for a semester with a full course load. Check your institution's catalog — thresholds and credit minimums differ.
Does an F hurt more than a W (withdrawal)?
Yes, almost always. An F counts as 0.0 points with full credits in the denominator — the single most damaging entry possible. A W usually does not enter the GPA at all, though it can matter for financial aid progress rules and shows on the transcript. Retaking a course helps only if your school's policy replaces (rather than averages) the grade — policies vary, so read yours before assuming.
How is GPA calculated for weighted high school courses?
Many high schools add a bonus for honors/AP/IB courses (often +0.5 or +1.0 per course on a 5.0-ish effective scale). This calculator is the college-style unweighted 4.0 version; to mimic a weighted scale, bump each advanced course grade up one step (an A in an AP class counts like its base 4.0 while a B counts as 4.0 on a +1.0 scale) — or better, ask the school for its exact formula, because colleges usually recalculate on their own scales anyway.