🎓 College & High School GPA Calculator
Semester, cumulative and weighted GPA in one place — with AP and honors bumps, pass/fail exclusions, and a note on the A+ scale difference that trips people up.
Course Grades & Credits
Grade points here use the common scale where A+ and A are both 4.0. Some institutions, including Calculator.net, score A+ as 4.3, which raises a transcript full of A+ grades above a 4.0. Check what your own registrar uses before relying on any figure.
What College & High School GPA Calculator Does
A GPA is a credit-weighted average, and the weighting is the part people forget. Each letter grade converts to a point value, that value is multiplied by the credit hours of the course, and the total is divided by total credits. A poor grade in a four-credit course therefore drags considerably harder than the same grade in a one-credit elective.
Four courses of 4, 3, 4 and 3 credits graded A, A−, B+ and A produce 52.3 grade points across 14 credits — a GPA of 3.74. Change nothing but the credit distribution and that figure moves, which is why averaging letter grades directly gives the wrong answer.
Three variants cause most of the confusion, and this page handles all of them. Cumulative GPA combines a prior record with the current term, and it cannot be found by averaging two GPA figures unless the credit loads happen to match. Weighted GPA adds a bump for harder courses, which is why high-school GPAs above 4.0 exist. And pass/fail, withdrawn and incomplete courses count toward credits attempted but are excluded from the average entirely.
One thing no calculator can settle for you is the scale itself. This tool treats A+ as 4.0; Calculator.net treats it as 4.3. Neither is wrong — institutions genuinely differ — but the two produce different answers from identical transcripts, so check what your own registrar publishes before comparing a number against an admissions threshold.
How to Use College & High School GPA Calculator
- Add each course with its course name, letter grade, and credit hours
- Click + Add Course to add additional subjects
- View your calculated cumulative GPA on the 4.0 scale
- Review your academic standing and honor distinction status
Formula Used by College & High School GPA Calculator
Grade point average
GPA = Σ(grade points × credits) ÷ Σ(credits)
- grade points
- The numeric value of the letter grade — A 4.0, A− 3.7, B+ 3.3, and so on
- credits
- Credit hours for that course, which is what does the weighting
Worked example
A (4 cr), A− (3 cr), B+ (4 cr), A (3 cr)
- 4.0 × 4 = 16.0
- 3.7 × 3 = 11.1
- 3.3 × 4 = 13.2
- 4.0 × 3 = 12.0
- Total 52.3 grade points over 14 credits
Result: 52.3 ÷ 14 = 3.74
Cumulative GPA — combining terms
cumulative = (prior GPA × prior credits + new grade points) ÷ (prior credits + new credits)
- prior GPA × prior credits
- Recovers the grade points behind your existing average
Worked example
A 3.45 GPA across 60 credits, plus the 52.3 points over 14 credits above
- 3.45 × 60 = 207.0 grade points already earned
- 207.0 + 52.3 = 259.3
- 60 + 14 = 74 credits
Result: 259.3 ÷ 74 = 3.50 — note this is not the average of 3.45 and 3.74, which would be 3.60
Weighted GPA — high school
weighted = Σ((grade points + level bonus) × credits) ÷ Σ(credits)
- level bonus
- Typically +0.5 for honors and +1.0 for AP or IB; regular courses get nothing
Worked example
The same four courses, with the first taken as AP and the third as honors
- (4.0 + 1.0) × 4 = 20.0
- 3.7 × 3 = 11.1
- (3.3 + 0.5) × 4 = 15.2
- 4.0 × 3 = 12.0
- Total 58.3 over 14 credits
Result: 4.16 — above 4.0, which is only possible on a weighted scale
The standard 4.0 scale
The most common US mapping. A+ is the contested entry — some institutions score it 4.3, which allows GPAs above 4.0 without any weighting.
| Grade | Points | Grade | Points |
|---|---|---|---|
| A+ | 4.0 (or 4.3) | C | 2.0 |
| A | 4.0 | C− | 1.7 |
| A− | 3.7 | D+ | 1.3 |
| B+ | 3.3 | D | 1.0 |
| B | 3.0 | D− | 0.7 |
| B− | 2.7 | F | 0.0 |
| C+ | 2.3 | P / N / I / W | Excluded from GPA |
Why cumulative GPA is not an average of averages
Averaging the two GPA figures gives 3.60. The correct credit-weighted answer is 3.50, because the earlier 60 credits carry far more weight than the new 14.
| GPA | Credits | Grade points | |
|---|---|---|---|
| Prior record | 3.45 | 60 | 207.0 |
| This term | 3.74 | 14 | 52.3 |
| Combined | 3.50 | 74 | 259.3 |
| Naive average of the two GPAs | 3.60 | — | Wrong by 0.10 |
Weighted against unweighted, same transcript
Course difficulty is the only thing changing. A failing grade earns no bonus, since there is nothing to reward in a class that was not passed.
| Course | Grade | Credits | Level | Unweighted pts | Weighted pts |
|---|---|---|---|---|---|
| Calculus I | A | 4 | AP | 16.0 | 20.0 |
| Computer Science | A− | 3 | Regular | 11.1 | 11.1 |
| Physics & Lab | B+ | 4 | Honors | 13.2 | 15.2 |
| English | A | 3 | Regular | 12.0 | 12.0 |
| Totals over 14 credits | 52.3 → 3.74 | 58.3 → 4.16 |
How to Read Your Result
Credits are the whole point
The most common mistake is averaging letter grades and ignoring credit hours. An A in a one-credit seminar and a C in a four-credit core course do not cancel out — the C carries four times the weight. This also means the leverage of any single course falls as your transcript grows: one bad grade in your first semester moves your cumulative GPA far more than the same grade in your final year, simply because there are fewer credits behind it.
Weighted GPA is not portable
High schools set their own bonuses. Some add 1.0 for AP and 0.5 for honors, others use different figures, and some do not weight at all. That makes a weighted GPA meaningful within one school and close to meaningless across schools. Many universities respond by recalculating every applicant onto their own scale, often stripping weighting entirely and sometimes counting only core academic subjects — which is why the number on your transcript may not be the number an admissions office is looking at.
What pass/fail actually does
A pass earns the credits and leaves your GPA untouched, which protects your average against a difficult course. It also means a strong performance in that course cannot lift your GPA. Withdrawals and incompletes behave similarly for GPA purposes but may affect academic progress requirements or financial aid, which is a separate matter from the arithmetic here.
Percentage to GPA has no universal mapping
A frequent question, and one with no honest general answer. Institutions set their own percentage bands: 90% might be an A at one school and an A− at another, and international systems — India's CGPA out of 10, the UK's honors classifications — do not map cleanly onto a four-point scale at all. Credential evaluation services exist precisely because the conversion is a judgement rather than a formula. Any calculator offering a single percentage-to-GPA table is showing you one institution's convention presented as universal.
Latin honors thresholds vary too
The cum laude, magna cum laude and summa cum laude bands shown here are common conventions rather than a standard. Some institutions set fixed GPA cutoffs, others award honors to a fixed percentage of each graduating class, which means the threshold moves year to year. Treat the label as indicative and check your own institution's published rule.
Limitations & Accuracy Notes
- Grade point scales differ between institutions. The A+ value in particular is contested — 4.0 here, 4.3 elsewhere — and some schools use plus/minus grading while others do not.
- Weighted GPA bonuses are set locally. The +0.5 for honors and +1.0 for AP or IB used here are the most common convention, not a rule, and your school may weight differently or not at all.
- There is no reliable conversion from a percentage or from an international grading system to a US GPA. Those mappings are institution-specific and often require formal credential evaluation.
- This calculator does not model grade replacement or forgiveness policies, where a repeated course overwrites the original grade. Those rules vary widely and change the cumulative calculation.
- The Latin honors bands are conventions. Institutions that award honors by class rank rather than fixed GPA cutoffs will not match them.
Frequently Asked Questions
How is GPA calculated?
What is the difference between weighted and unweighted GPA?
How do I work out my cumulative GPA?
Do pass/fail and withdrawn courses count?
Is an A+ worth 4.0 or 4.3?
Why must GPA be weighted by credit hours?
How much can one bad grade move my GPA?
How do I convert between GPA scales?
Do failed or retaken courses count?
Do pass/fail courses affect GPA?
Is my data stored?
References & Further Reading
- University of Nebraska–Lincoln — Grade Point Average (GPA) — Registrar page publishing the point scale used here — including A+ = 4.00 and A− = 3.67 — and the Pass/No Pass rules
- UC Berkeley Residential Life — GPA Calculator — University statement of the credit-weighted method: total grade points divided by total letter-graded units
- University of Kansas — GPA Calculator — Example of the prior-GPA-plus-current-term projection this tool now supports