Weighted and unweighted GPA side by side, your cumulative GPA with prior terms blended in, and a target planner that tells you exactly what you need next term. Free, no signup.
Enter a letter grade or a percentage — if you type a %, it converts on this scale: 93-100 A, 90-92 A-, 87-89 B+, 83-86 B, 80-82 B-, 77-79 C+, 73-76 C, 70-72 C-, 67-69 D+, 63-66 D, 60-62 D-, below 60 F. Everything auto-saves on this device.
Add your prior cumulative GPA below to see your blended cumulative GPA here.
Fill in both and the cumulative result above blends your earlier terms with this term's courses, on the unweighted scale.
GPA is a credit-weighted average of grade points:
GPA = Σ (grade points × credits) ÷ Σ credits
Each letter grade converts to points (A = 4.0, B = 3.0, C = 2.0…), and courses with more credits pull the average harder. Weighted GPA uses the same formula, but first adds a difficulty bonus to each course's points: +0.5 for Honors, +1.0 for AP/IB. That is why a weighted GPA can rise above 4.0 while an unweighted GPA cannot (except where an A+ counts as 4.3).
Three courses: Biology — A, 4 credits, Regular. English — B+, 3 credits, Honors. History — A-, 3 credits, AP.
The example courses are pre-loaded in the calculator above, so you can check the math yourself, then replace them with your own.
| Letter grade | Grade points | Percentage range |
|---|---|---|
| A+ | 4.3 | Varies by school |
| A | 4.0 | 93–100 |
| A- | 3.7 | 90–92 |
| B+ | 3.3 | 87–89 |
| B | 3.0 | 83–86 |
| B- | 2.7 | 80–82 |
| C+ | 2.3 | 77–79 |
| C | 2.0 | 73–76 |
| C- | 1.7 | 70–72 |
| D+ | 1.3 | 67–69 |
| D | 1.0 | 63–66 |
| D- | 0.7 | 60–62 |
| F | 0.0 | Below 60 |
Scales vary: some schools cap an A+ at 4.0, some do not award plus/minus grades at all, and some weight AP courses differently. If your transcript uses different points, this page still gets you within a few hundredths — but your school's scale is the official one.
For each course, multiply the grade points (A = 4.0, B = 3.0, and so on) by the course's credits, add those products together, and divide by the total credits. A 4-credit A is worth 16 points; a 3-credit B is worth 9. Weighted GPA works the same way, except Honors courses add 0.5 and AP/IB courses add 1.0 to the grade points before multiplying.
Unweighted GPA treats every course the same, on a scale that tops out at 4.0 (or 4.3 where an A+ counts). Weighted GPA gives extra points for harder courses — typically +0.5 for Honors and +1.0 for AP or IB — so a weighted GPA can exceed 4.0. Colleges often recalculate both, which is why this calculator shows them side by side.
Honestly: an exact 4.0 is almost certainly out of reach once you have credits below a 4.0 average, because every new term is averaged with the old ones — perfect 4.0 terms pull a 3.3 upward but never all the way to 4.0. What you can do is get close, and the climb is fastest early on when you have fewer credits banked. Use the target planner above with a target like 3.5 or 3.6 to see a goal that is actually reachable, and how many strong terms it takes.
Less than you fear, usually. The damage depends on the share of total credits the course represents. If you have 30 credits banked at a 3.7 average, one 3-credit C (2.0) pulls your cumulative to about 3.55 — noticeable, not fatal. The same C in your very first 12-credit term hurts more. Enter your real numbers above, add the course with the grade you are worried about, and see the exact result instead of guessing.
It depends on your school. Many colleges cap the scale at 4.0 and count an A+ the same as an A; many high schools award 4.3. This calculator uses 4.3 for an A+. If your school caps at 4.0, just enter A instead of A+ and the results will match your transcript.
Yes and yes. The calculator is free with no signup, and it runs entirely in your browser — your courses and grades are never uploaded anywhere. Entries are saved only on your own device so you can pick up where you left off.