Grade Calculator
Calculate Current Grade
Final Grade Calculator
Find out what you need on your final exam.
How to Use This Grade Calculator
Trying to figure out exactly where you stand in a class before finals week can be incredibly frustrating. I've noticed firsthand that syllabus weighting formulas are notoriously confusing to calculate by hand on a scratchpad—especially when homework, quizzes, and a midterm all carry different percentages. This page splits the job into two clear jobs: find your running course average, then solve for the score you need on the final.
- Calculate current grade. Add a row for each graded assignment or exam. Enter the score as a percentage and the weight from your syllabus (for example, midterm 25%, homework 15%). Press Calculate to see your weighted average and a letter-grade snapshot.
- Leave weights blank for a simple average. If every item counts equally, enter grades only—the tool averages the filled rows when no weights are supplied.
- Plan the final. In the Final Grade Calculator section, enter your current percentage, your target class grade, and how much the final is worth (for example 20 for twenty percent). The result shows the exam score required to hit that target.
- Cross-check with related tools. For multi-row planning with a shareable link, try the What-If Grade Calculator. For semester GPA from letter grades, use the GPA Calculator.
Grade Formulas and Practical Applications
Think of your course grade like a weighted shopping cart—some items (the final, the midterm) cost more toward the total than daily homework. Once you see the math written out, the syllabus stops feeling like a guessing game.
Current weighted average
Current Grade = (Score₁ × Weight₁ + Score₂ × Weight₂ + …) / Total Weight
Only include assignments that already have scores. If homework is worth 20% but only half the assignments are graded, use the weights your instructor actually posted—not the full category weight for work not yet entered.
Required final exam score
Required Final = (Target − Current × (1 − f)) / f
Here f is the final's share of the course as a decimal (20% → 0.20). Example: current 85%, target 90%, final weight 20% gives required final (90 − 85 × 0.80) / 0.20 = 110%—meaning a 90% overall is not reachable without extra credit. That early warning saves a wasted all-nighter chasing an impossible number.
Where students use this most
- Checking whether a B+ is still realistic before dropping a low quiz score.
- Deciding how hard to push on a final worth 30–40% of the grade.
- Translating a points-based rubric into percentages before using the weighted rows.
Standard Units and Conversion Tables
This tool works in percentages (0–100). Letter grades are derived from percentage bands on a common US-style scale:
| Letter | Typical range |
|---|---|
| A | 90% – 100% |
| B | 80% – 89% |
| C | 70% – 79% |
| D | 60% – 69% |
| F | Below 60% |
For GPA-style planning instead of course percentages, see the College GPA Calculator or browse all grade calculators.
Frequently Asked Questions
What if my syllabus uses a point system instead of percentages?
Add up points earned and divide by points offered, then multiply by 100. Enter that percentage in the grade column. If every assignment counts equally, leave weights blank and the tool averages your rows.
What happens if my required final score is over 100%?
Your target is not reachable with the current average and final weight unless the professor adds bonus points or curves the exam. Lower the target or focus on securing partial credit instead of an impossible percentage.
Do assignment weights have to add up to 100%?
Not for the current-grade section—you are dividing by the weight you actually entered. For the final calculator, treat the final weight as its syllabus share (often 15–30%) alongside the current grade that already reflects everything else.
How is the letter grade determined?
A at 90%+, B at 80%+, C at 70%+, D at 60%+, otherwise F. Plus/minus cutoffs are not applied here; check your official gradebook for the exact mapping.
Can I use the current grade in the final section?
Yes—calculate your running average first, copy the percentage into Current Grade (%), then fill target and final weight. For a single form with shareable URL, the What-If Grade Calculator keeps rows and goals in one link.
Disclaimer. RapidRatio is informational only—not academic or admissions advice. Confirm every figure with your instructor or official transcript.