Find the score you need on the final exam, or compute your overall weighted grade from course categories — 100% in your browser.
Example: (88 − 82 × 0.70) ÷ 0.30 = 100% — when the answer exceeds 100, the target is out of reach
An 82% current grade, a final worth 30%, and an 88% target.
Calculations assume a straight percentage-weighted syllabus and the standard US letter-grade cutoffs (A ≥ 93, B ≥ 83, C ≥ 70, D ≥ 60). Your instructor's syllabus is the final authority — some courses curve or round differently.
To find what you need on the final: enter your current grade, the exam weight, and your target — the calculator solves the weighted-average formula and tells you the required score, flagging when it is mathematically impossible.
FreeToolHub Final Grade Calculator is a free browser-based tool that computes the exam score needed to reach a target grade, plus weighted-average grades, no signup.
Enter your current grade, the final exam weight, and your target grade to see exactly what score you need on the final. Handles weighted categories and letter grades.
This calculator answers the question every student asks in December and May: what do I need on the final? Enter your current grade, the final exam's weight as a share of the course grade, and the overall grade you are targeting, and it solves the weighted-average equation for the required exam score. It also runs the reverse direction — telling you when the target is mathematically impossible even with a perfect 100, and when you have already secured it and can score as low as a given number and still hit your goal.
Students planning exam week use it to triage: a final worth 40% can rescue a shaky grade, while one worth 15% cannot, and study hours should follow the math. It is equally useful for protecting a scholarship or program requirement — the "minimum score to keep an A" output removes the guesswork from coasting safely. Teachers and TAs use it to sanity-check how a curved final will move letter grades, and tutors use the weighted-category mode to show exactly which upcoming assignment moves the needle most.
The core formula rearranges a weighted average: required score = (target − current × (1 − w)) ÷ w, where w is the final's weight as a decimal. If you currently hold 85% and the final is worth 40% of the course grade, you need (90 − 85 × 0.6) ÷ 0.4 = 97.5 to finish at 90. The calculator flags two edge cases automatically: a required score above 100% means the target is unreachable, while a required score at or below 0% means the grade is already locked in. Weighted-category mode takes each syllabus component — homework, labs, midterms, final — with weights that must sum to 100%.
Three situations cover most students. Impossible: an 84 with a 30%-weight final and a 90 target needs (90 − 84 × 0.7) ÷ 0.3 = 104, so the target must drop to roughly 88. Reachable: an 85 with a 40%-weight final needs 97.5 for a 90, but only 82.5 to keep an 85. Secured: a 97 with a 20%-weight final needs (90 − 97 × 0.8) ÷ 0.2 = 62 to hold an A — anything at or above 62 on the final finishes at 90 or better. Notice how much the final's weight matters: the same gap is rescuable at 40% weight and hopeless at 30%.
The calculator maps percentages to letters on the standard cutoffs: A at 90 and above, B at 80, C at 70, D at 60, and F below 60, with plus and minus grades at the conventional boundaries (93 and above for a solid A, 90-92 for an A-, and so on). If your school uses different cutoffs — some curve-heavy programs put an A at 93 — work from your course syllabus and enter the numeric target directly. The weighted-category mode is where most grades actually live: a perfect exam score cannot offset a missed homework category worth 25% of the grade, so check each component, not just the headline average.
Required = (target − current × (1 − w)) ÷ w, where w is the final's weight as a decimal. Example: current 85%, target 90%, final worth 40% gives (90 − 85 × 0.6) ÷ 0.4 = 97.5. The formula is just the weighted-average equation solved for the unknown exam score.
That means the target is mathematically unreachable — even a perfect exam will not get you there, because your current grade caps the weighted average. The tool shows the best attainable grade (a perfect final) so you can lower the target until the required score drops to 100 or below. Better to know now than after the exam.
Your grade is already secured. Even scoring a zero on the final leaves you at or above the target, because your current average carries enough weight. The calculator reports the minimum you could score and still hit the goal, which is useful for deciding where to spend limited study time.
The tool uses the common US convention: A at 90 and above, B at 80, C at 70, D at 60. Many institutions shift these — an A at 93 or a D at 65 both exist. Enter your target as a percentage straight from your syllabus if your school's scale differs.
Instead of one exam weight, you list every graded component and its share of the course grade — for example homework 20%, quizzes 10%, midterm 30%, final 40% — and your current standing in each. The weights must total 100%, and the tool computes both your current weighted grade and what scores going forward produce your target.
Not directly. Fold extra credit into the category it belongs to by adjusting that category's current average, and remove a dropped assignment before entering scores. Once the inputs reflect those rules, the weighted math is identical.
What do you call a nosy pepper?
No signups, no data sold. Every tool is free to use — the free tier allows 5 downloads or saves per day, and the optional Pro plan ($7/mo, $59/yr) adds unlimited downloads, batch processing, white-label exports and an ad-free experience.
☕Support me on Ko-fi— support the free tier100% of proceeds go towards hosting & building more free tools.