Add each graded category with its weight — homework, quizzes, midterms — to see your current course grade. Then use the final exam tool to find the score you need to hit a target.
What score do you need on just the final to reach a target overall grade?
The three pre-filled categories — Homework 20% at 92%, Midterm 30% at 85%, Quizzes 15% at 88% — add up to 65% of total weight so far. Weighted grade = (20×92 + 30×85 + 15×88) ÷ 65 = 5,710 ÷ 65 ≈ 87.8%, a B. The other 35% of the course — likely a final exam not yet entered — doesn't count as zero; it simply isn't part of the calculation until a row for it exists.
Current grade 85%, target 90%, final worth 25%: needed = (90 − 85×0.75) ÷ 0.25 = (90 − 63.75) ÷ 0.25 = 105% — not achievable, since no exam scores above 100. Even a flawless 100% final only pulls the overall grade up to 85×0.75 + 100×0.25 = 88.75%, still short of the 90% target by more than a point. The gap between "close" and "achievable" can be smaller than it looks once the final's weight is factored in.
Every time a row is added or removed, both the running total weight and the weighted score recompute from every row currently present — there is no running memory of a previous total. Entering a fourth category later doesn't add to the 87.8% above; it replaces the whole calculation with a fresh weighted average across all four rows, exactly the same formula run against a larger set of categories. For the separate question of combining final letter grades across multiple finished courses into one GPA, see the GPA Calculator. A weighted average is really just the Percentage Calculator's "part of a whole" idea applied several times over and combined, and the Statistics Calculator covers the plain (unweighted) average alongside it for comparison.
Multiply each category's score by its weight, sum those, then divide by the total weight: weighted grade = Σ(score × weight) ÷ Σ(weight). If homework is 20% at a 90% average and the midterm is 30% at 75%, and those are the only two categories entered so far, the running grade is (90×20 + 75×30) ÷ (20+30) = (1800+2250) ÷ 50 = 81%.
That's normal mid-semester — categories not yet graded simply aren't in the list yet. The calculator divides by whatever total weight you've actually entered, so it always reflects your correct grade for the portion of the course completed so far, not a distorted number assuming ungraded work counts as zero.
Use the second tool: enter your current grade (everything before the final), your target overall grade, and the final's weight as a percentage of the total course grade. It solves final score = (target − current × (1 − weight)) ÷ weight — the algebraic rearrangement of "your current grade times its share of the total, plus your final score times its share, equals your target."
Above 100% means the target isn't mathematically reachable no matter what you score on the final — the current grade and final's weight don't leave enough room. Below 0% (or the tool showing "already locked in") means you've already secured the target grade even with a zero on the final, assuming the rest of the course grade is finalized as entered.
The standard US scale: A 90–100, B 80–89, C 70–79, D 60–69, F below 60. Many schools use plus/minus variants (A-, B+, etc.) or entirely different cutoffs, especially outside the US — check your specific syllabus for the exact scale that applies to your course, since the letter shown here is a common default, not a universal standard.
This page calculates your grade within a single course from its component assignments and exams. The GPA Calculator combines final letter grades across multiple courses, weighted by credit hours, into one overall GPA. Use this page first to find out what grade you're on track for in a specific class, then feed that letter grade into the GPA calculator alongside your other courses.
Worked example: current grade 82% going into the final, target 88% overall, final worth 20% of the grade: needed = (88 − 82×0.8) ÷ 0.2 = (88 − 65.6) ÷ 0.2 = 112% — not achievable, since no exam score exceeds 100%. Lowering the target to 85% instead: (85 − 65.6) ÷ 0.2 = 97% — technically achievable, but only with a near-perfect final.
Writing the assignment rather than grading it? The Word Counter checks length against the brief.