Grade Calculator
Your real grade,
assignment by assignment.
Most students only know their grade when the professor posts it. You don't have to wait. Enter each assignment with its score and total points — the calculator adds it all up using the same points-based formula your registrar uses, and shows you exactly where you stand right now.
How to use it
This calculator tracks your grade assignment by assignment using raw scores — not syllabus percentages. If your professor uses pre-set category weights, use the Weighted Grade Calculator.
Add a row for each graded assignment — name is optional
Click "Add assignment" for each piece of work your professor has graded this semester: quizzes, homework sets, labs, midterms, papers. You don't need to enter assignment names — only the Score and the Out-of value matter for the calculation. Add one row per graded item, not per category.
Enter score and max points — the formula weights automatically by point value
For each row: enter how many points you earned and the maximum possible. A 100-point midterm will automatically count five times as much as a 20-point quiz — not because you set any weights, but because the point totals do the weighting for you. This is the same formula your professor's gradebook uses. If the professor posts a percentage (e.g. 87.3%), convert to points only if you know the actual point total — otherwise use the Weighted Grade Calculator.
Leave future assignments blank — calculator shows current standing only
If an assignment hasn't been graded yet, don't enter a 0 — leave the row blank or delete it. Entering 0 for a future assignment unfairly drags your current grade down; the calculator is designed to show where you stand right now, based only on completed work. Add estimated scores for future assignments only when you want to project your final grade.
Scenario mode: change one score to find the highest-leverage upcoming assignment
Add your upcoming assignments with estimated scores, then change one score at a time. The calculator shows instantly how much a better score on that assignment moves your course grade. Because point values do the weighting, a 10-point improvement on a 100-point final moves your grade far more than a 10-point improvement on a 20-point quiz. Use this to prioritize which assignment's final preparation is worth the most of your remaining study time.
The formula
How your grade
is really calculated
It's not an average of letter grades. It's a points race — and that changes everything about which assignments matter most.
Most students assume their grade is an average of percentages — add up your quiz scores, divide by the number of quizzes. That's not how it works. Professors use a points-based cumulative formula: every point you earn is added to a running total, then divided by the total points possible across all graded work.
This means a 100-point midterm contributes exactly five times as much to your grade as a 20-point quiz — automatically, without any manual weighting. The point totals do all the heavy lifting.
That asymmetry is why acing a big exam matters so much more than perfecting a small homework assignment. A student who scores 95/100 on a midterm recovers from a 70/100 quiz faster than a student who averaged 82.5 on both — the math rewards performance on high-point items.
In practice
Worked example:
Intro to Psychology
Suppose your Intro to Psychology professor has graded the following so far this semester:
| Assignment | Score | Max Points | % Earned |
|---|---|---|---|
| Syllabus Quiz | 10 | 10 | 100% |
| Chapter 1–3 HW | 48 | 50 | 96% |
| Quiz 1 | 17 | 20 | 85% |
| Midterm Exam | 81 | 100 | 81% |
| Lab Report | 46 | 50 | 92% |
| Total | 202 | 230 | 87.83% |
Overall grade: 202 ÷ 230 × 100 = 87.83% (B+)
Notice that the 100-point midterm (81%) pulls the average down even though the student performed well on smaller assignments. That's the points formula working exactly as intended — higher-stakes items carry more weight because they're worth more points.
Compare this to a naive percentage average: (100 + 96 + 85 + 81 + 92) ÷ 5 = 90.8% — a full 3 points higher, and misleading. The points-based result of 87.83% is what the gradebook actually shows.
Letter grades
Standard US
grading scale
The scale below is the CollegeBoard standard, used by the majority of US colleges and universities. Your professor's cutoffs may differ — some use a+/- system, others use flat letter grades, and a handful use non-standard thresholds. Always check your syllabus.
Achievability scenarios
Assignment by assignment —
where points actually come from
Three students tracking the same kind of course. The calculator shows them what a simple grade average hides: which assignments have the highest leverage, and where their effort should go next.
Tasha — Put Extra Prep into the 100-Point Midterm, Not the 20-Point Quizzes
Tasha had a 79% on her 100-point midterm and solid scores on her five 20-point quizzes (average 88%). She ran the calculator and saw that her midterm score — despite being decent — was pulling her overall grade down more than all five quizzes combined.
Midterm: 79 × 100 pts / 100 possible = 79.0 pts toward grade
If quizzes → 95%: gain = 7 pts on 100 total = +7 pts overall
If midterm → 88%: gain = 9 pts on 100 total = +9 pts overall
Her upcoming final exam was worth 150 points — 1.5× the midterm. She concentrated prep time on final-exam material rather than chasing points on smaller assignments. She earned 91% on the final (136.5 of 150 points), which moved her overall course grade from an estimated B to a B+. Had she spent equivalent time perfecting quizzes, the grade gain would have been less than half as large.
Diego — Forgot to Include an Ungraded Lab Report That Counted as Zero
Diego had been estimating his grade mentally as "around 88%" based on his quiz and homework averages. He ran the calculator with all his assignments from the semester and got a surprise: 78%. He had forgotten to include a lab report he never submitted.
Lab report: 0 earned / 50 pts possible (unsubmitted)
With missing lab: 440 / 550 = 80.0%
After late submission accepted: 38/50 → 478/550 = 86.9%
His professor accepted a late submission with a 25% penalty: he earned 38 out of 50 (reduced from an expected 51). Even with the penalty, submitting the lab raised his grade from 80.0% to 86.9% — back into solid B range, close to B+. Without the calculator surfacing the missing assignment, he wouldn't have known to submit it before the late-work window closed.
Priya — 93% on Small Assignments, 65% on Two Exams → Overall 74%
Priya had been consistently earning 93%+ on her homework and weekly quizzes (each 20 points). She was confident she was getting an A. She ran the calculator when midterm grades posted and was alarmed: 74%.
Quizzes (6 × 20 pts): 93% × 120 pts = 111.6 pts
Midterm 1 (100 pts): 65% → 65.0 pts
Midterm 2 (100 pts): 65% → 65.0 pts
Total: 390.4 / 480 possible = 81.3%
She recalculated with the final (120 pts, not yet taken) included as a projection. Even at 93% on the final (111.6 pts), her overall would be 502 / 600 = 83.7% — a B, not an A. To reach an A− (90%), she would need 540 / 600, which required 149.6 pts on the final — impossible (max 120). The calculator made the ceiling explicit three weeks before finals week, giving her time to adjust her target and plan for next semester instead of being blindsided by the transcript.
Related tools & reading
More grade calculators
and guides
Other calculators for different grading systems or goals:
- Weighted Grade Calculator — for courses where the syllabus gives pre-set percentage weights (Homework 20%, Midterm 30%, Final 50%) instead of raw points per assignment.
- Final Grade Calculator — enter your current course grade and the final's weight, and get the exact score you need on the final to hit your target grade.
- Grade Percentage Calculator — quick single-assignment conversion: enter points earned and points possible, see the percentage and letter grade instantly.
- College GPA Calculator — once you know your course letter grade, enter it alongside other courses to see semester and cumulative GPA.
- Raise GPA Calculator — enter your current cumulative GPA and a target GPA; get the semester GPA you'd need going forward, and how many credits it takes.
Guides on grades and academic performance:
- What Is a Good GPA? — once your course grade maps to a letter, see what that letter means for GPA benchmarks, Dean's List thresholds, and scholarship minimums.
- How to Raise Your GPA — tracking grades assignment-by-assignment is step one; this guide covers what to do when you see the grade isn't where you need it.
- GPA and College Admissions — how course-by-course grades aggregate into the cumulative GPA that transfer and graduate program applications evaluate.
- GPA for Graduate School — if this course's grade will affect a graduate school application, this guide covers program minimums and how GPA trends are evaluated.
Common questions
Grade Calculator
FAQ
How is an overall course grade calculated from assignments?
Add up all points you've earned, divide by total points possible, and multiply by 100. Example: 273 earned out of 320 possible = 85.31%. That's the exact number in your gradebook.
Do all assignments count equally?
Not unless they're worth the same points. A 100-point final counts five times more than a 20-point quiz — that weighting is built into the point values automatically.
What if I haven't finished some assignments yet?
Leave those rows blank. The calculator skips any row without a score and shows your current grade based only on completed work. Fill in estimates to project your final grade.
How do letter grades map to percentages?
Standard US scale: A+ = 97–100%, A = 93–96%, A− = 90–92%, B+ = 87–89%, B = 83–86%, B− = 80–82%, C+ = 77–79%, C = 73–76%, C− = 70–72%, D = 63–66%, F = below 60%. Your syllabus may use different cutoffs.
What's the difference between this and the Weighted Grade Calculator?
This calculator takes individual assignments (score + max points). The Weighted Grade Calculator takes syllabus categories with pre-assigned percentage weights (e.g. Homework 30%). Use this one if you're tracking assignment by assignment.
Can I use this mid-semester?
Yes — enter all graded work, leave future assignments blank, and you'll see your current standing. Add estimated scores for upcoming work to project where you'll finish.
What if my professor gives extra credit?
Add extra credit to your earned score. If you scored 48/50 on a quiz plus 3 extra credit points, enter score 51 and max 50. The percentage over 100 on that row raises your average.
How does rounding work?
This calculator shows two decimal places. Most professors round final grades to the nearest whole number before applying letter grades — a 92.4 doesn't automatically become an A− at most schools. Check your syllabus for the exact rounding policy.
What happens to my data when I close the browser?
Your assignments save automatically to localStorage after each calculation. They'll be there when you return. Private/incognito mode or clearing browser data removes saved state.
Can I calculate GPA from this tool?
This shows your percentage and letter grade for one course. To convert to GPA points and calculate cumulative GPA, use the College GPA Calculator.
What if my professor uses a different grading scale?
Some professors use non-standard cutoffs. The letter grade shown here uses the CollegeBoard standard scale. Cross-check against your syllabus for the official grade boundary at your school.
Does attendance count in this calculator?
If your professor assigns points for attendance or participation, add a row for it with your earned points and the total possible. Any gradable item with points counts.
Data sources
Grading standards
we follow
The letter-grade scale in this calculator follows the CollegeBoard standard A–F mapping, which is also the basis for grade-point values reported in NCES IPEDS institutional data. The grade-point conversion used for GPA calculation is consistent with College Scorecard reporting.
Grade-point policies vary by institution. The UC Davis Registrar and MIT Registrar publish their grading scales publicly as examples of how institutions interpret letter-grade thresholds. Academic progress requirements for federal aid are governed by Federal Student Aid SAP standards.