Final grade calculator
100% private — math happens in your browserEnter the three numbers and calculate. The result tells you the minimum score to score on the final — and whether that score can exist.
List each graded category with its weight and your average. Leave a score empty if it has not been graded yet — the calculator will also tell you what you need to average on the rest to reach a target.
Weights so far: 0%
Add your categories, make the weights sum to 100%, then calculate.
How weighted grades actually work
Weighted grading means each part of the course contributes a fixed share of the final number, no matter how many points it contained. If homework is 20%, the midterm 30% and the final 50%, a 90 homework average adds 0.20 × 90 = 18 points to your final grade; a 70 midterm adds 21; a 60 final adds 30. Total: 69. The weights — not the raw scores — decide what matters, which is why a weak final can sink a course even when everything else was strong.
The "what do I need on the final" tab runs that logic backwards. The formula it solves is:
Required score = (desired − current × (1 − w)) ÷ w, where w is the final's weight as a decimal. For a current grade of 75, a target of 80 and a final worth 25%: (80 − 75 × 0.75) ÷ 0.25 = (80 − 56.25) ÷ 0.25 = 95. You would need a 95 on the final to finish with an 80.
Three sanity checks worth knowing. If the required score is negative, the target is already locked in — even a zero on the final cannot drop you below it (that usually means the final's weight is smaller than your current cushion). If the required score is above 100, no exam performance can reach the target, and the honest options live in the next section. And if your professor caps grades at 100 or curves, the calculator's straight-line math stops applying — treat its answer as the uncurved baseline.
When the number comes back over 100
Say the calculator returns 110, as it does for a current grade of 80, a target of 90 and a final worth 40%. That target is unreachable through the exam alone, and it is better to know now than after the test. The realistic moves, in the order most students regret least:
- Check for points you have not claimed. Missing assignments, resubmissions and participation credit often exist before the final is even sat.
- Ask about extra credit early. Professors approve extra work before the deadline far more often than after; one specific, polite email is the whole cost.
- Recalculate a reachable target. The same course might allow an 85 instead of a 90 with a 92.5 on the final — possible, if hard. Aim where the math and effort agree.
- Protect the courses you can still move. Study time follows marginal return: the B− you can lift to an A− usually deserves the hours before the impossible A.
None of this involves negotiating after the fact. The conversation with a professor goes better with the calculator's numbers in hand: "I'm at 80 and want a 90; the final is 40% — is there anything available to close the gap?" is a reasonable question three weeks out and a poor one three days out.
Planning the last weeks before the final
Once you know the score you need, reverse-plan the study time. Tick these off as you go:
- Write the required score somewhere you will see it — it sets how deep to study.
- Weight your weakest topic first: the final covers everything, so early days go to gaps.
- Do one full past paper or practice exam under time pressure.
- Re-summarise each topic from memory, then check against notes — not the reverse.
- Sleep before the exam; recall beats one more hour of tired reading.
Letter grades, percentages and GPA
The calculators show letters using one common percentage-to-letter scale (the one this site's tools use). Institutions differ on the cutoffs — some schools give a B− for 80%, others start B− at 82 — so treat this table as a reference, not a ruling:
| Percent | Letter | GPA points (4.0 scale) |
|---|---|---|
| 97–100 | A+ | 4.0 |
| 93–96 | A | 4.0 |
| 90–92 | A− | 3.7 |
| 87–89 | B+ | 3.3 |
| 83–86 | B | 3.0 |
| 80–82 | B− | 2.7 |
| 77–79 | C+ | 2.3 |
| 73–76 | C | 2.0 |
| 70–72 | C− | 1.7 |
| 67–69 | D+ | 1.3 |
| 63–66 | D | 1.0 |
| 60–62 | D− | 0.7 |
| Below 60 | F | 0.0 |
To turn course grades into a GPA, convert each final percentage to its letter with the table, take the GPA points, weight them by course credit hours, and divide by total credits. The weighted category tab does the same arithmetic inside a single course; a GPA calculator just repeats it across courses.
Grades fine — but the case study due in that course?
When the paper is the risky part of the course, hand the brief to a professional. Topic, length, referencing style and deadline produce a quoted price, and a deadline-bound writer takes the draft from blank page to submission-ready.
Frequently asked questions
What do I need on my final if it is worth 30%?
It depends on your current grade and your target. For example (illustrative): at 75 now, aiming for 80 with a 30% final, you need (80 − 75 × 0.70) ÷ 0.30 ≈ 92.5. Type your own numbers into the first tab and the answer updates with the meter.
Can I still pass if the required score is over 100?
Not through that exam alone — a score above 100 cannot exist on a standard scale. Your options are extra credit, claimed missing work, or a revised target. The "over 100" section above lists the moves in the order students regret least, and the earlier you email the professor, the more options exist.
Does the calculator work with points instead of percentages?
Convert points to percentages first. Divide the points you have earned by the points possible so far, and use that percentage as your current grade. For the final's weight, use the share of the total course points the remaining exam represents — the syllabus usually states it directly.
What is the difference between weighted and points-based grading?
Points-based grading adds every raw point and divides by the total — a 10-point quiz counts ten times less than a 100-point exam by construction. Weighted grading assigns fixed shares regardless of point totals, so a 20-point quiz in a 20% homework category still carries 20% of your grade. Check the syllabus to know which system you are in; the weighted tab above handles the weighted kind.
How do I convert my grade to a 4.0 GPA?
Convert each course's final percentage to a letter with the table above, take its GPA points, multiply by the course's credit hours, add those products up, and divide by total credit hours. That credit-weighted average is your GPA for the term.
Was this calculator useful?