Find the score you need on remaining work, compute a weighted average across assignments, or grade a single test.
Calculator verified • Last updated: August 2026
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This target isn't reachable through the remaining graded work alone — it would need more than 100% (unless extra credit is offered).
You've already secured this grade — even a 0% on the remaining work keeps you at or above your target.
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Total weight entered doesn't add up to 100% — the average below is still weight-correct for the rows you've entered, but double-check your weights represent the whole course.
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The "Final Grade Needed" mode answers a specific question: given how you've done so far, what score do you need on everything left in the course to hit a target final grade? It comes down to how much of the total grade is already "locked in" versus how much is still up for grabs.
$$\text{Needed} = \frac{\text{Target} - (\text{Current} \times \text{Done})}{\text{Left}}$$
Needed: the score needed on the remaining work, as a percentage.
Target: your desired final grade, as a percentage.
Current: your current weighted average on completed work, as a percentage.
Done: the fraction of the total course grade already completed, as a decimal (70% done = 0.70).
Left: the fraction still left to be graded, as a decimal (1 − Done).
Worked example: you're at 85% with 70% of the course graded, and you want an 90% final grade. Points already earned toward the final grade: 85 × 0.70 = 59.5. Needed on the remaining 30%: (90 − 59.5) / 0.30 ≈ 101.7% — just over 100%, meaning a 90% final grade isn't reachable without some form of extra credit at this point, even with a perfect score on everything left.
Most courses don't weight every assignment equally — a final exam might count for 30% of your grade while weekly homework counts for 10% combined. A weighted average multiplies each score by its weight, sums those products, then divides by the total weight used:
$$\text{Average} = \frac{\sum (\text{Score} \times \text{Weight})}{\sum \text{Weight}}$$
Average: the weighted average.
Score: each assignment's score.
Weight: each assignment's weight.
Dividing by the sum of weights (rather than assuming they add to exactly 100) means the calculator still gives a mathematically correct average even if you haven't entered every assignment yet — useful for checking your grade mid-semester before the syllabus's full weight breakdown is complete.
This calculator uses the most common US convention (A: 90+, B: 80–89.9, C: 70–79.9, D: 60–69.9, F: below 60) purely as a reference point. Schools, individual teachers, and countries vary this significantly — some use plus/minus grading, some shift the cutoffs by a few points, and many countries use an entirely different scale. Always check your own syllabus or institution's grading policy for the scale that actually applies to you.
Averaging assignment percentages without weighting them is the most common error — a 100% on a 5-point quiz and a 60% on a 200-point final are not equally important to your grade, but a simple (unweighted) average would treat them that way. Forgetting that "weight completed so far" and "weight of the assignment you're computing" are different numbers is another: the Final Grade Needed mode wants the total weight of everything graded to date, not any single upcoming assignment's weight.
Weighted Average — an average where some values count more than others, based on an assigned weight, rather than every value counting equally.
Extra Credit — optional additional graded work that can push a final grade above what the regular graded work alone would produce, sometimes the only way to reach a target grade that's otherwise out of mathematical reach.
Curve — an adjustment applied to raw scores (often after a test performs worse than expected) to shift the grade distribution — see the Grade Curve Calculator for common curving methods.
Use the Final Grade Needed mode: enter your current grade, how much of the total grade is already completed, and your target final grade (89.5, say, for a B+). It solves for the score you need on the remaining work.
That means your target grade isn't mathematically reachable through the remaining graded work alone, even with a perfect score — unless your class offers extra credit. The calculator flags this instead of just showing an unreachable number.
No. The 90/80/70/60 cutoffs used here are the most common US convention, but individual schools, teachers, and countries use different scales — always confirm against your own syllabus or institution's grading policy.