How to Calculate Final Grade
Learn how to calculate final grade by hand with the weighted formula and the points method, step by step, with worked examples. Or skip to the free calculator below.
Course Grade Calculator
Add your categories (weighted) or assignments (points-based) and get your current grade.
Weights should add up to 100%.
Final Exam Grade Needed
What do you need on the final to hit your target grade?
If your final has two parts and you already took part 1, fill both fields and we will tell you what part 2 needs.
What-If Scenario
See how a future score changes your grade before it happens.
GPA Calculator
Semester or cumulative GPA — weighted or unweighted.
Scale: A/A+ = 4.0, A- = 3.7, B+ = 3.3, B = 3.0, B- = 2.7, C+ = 2.3, C = 2.0, C- = 1.7, D+ = 1.3, D = 1.0, D- = 0.7, F = 0.
Quick Quiz Grader
For students checking a score — and teachers grading a stack.
Grade Calculator for Your LMS
Each platform grades a little differently. Pick yours — we'll load the right setup into the Course Grade calculator.
Canvas
Uses assignment groups with weights (e.g. Homework 30%, Quizzes 20%, Exams 50%). Matches the Weighted mode.
Blackboard
Weighted totals per category. Same math as Canvas — categories with percentage weights.
Moodle
Gradebook aggregates by mean of grades, often points-based with categories. Start points-based.
Google Classroom
Simple points-based gradebook. Start points-based and enter your scores.
After loading a setup, open the Course Grade tab — your categories are pre-filled. Just enter your scores.
How to calculate final grade: the short answer
To calculate a final grade, combine every score in the course into one percentage. In a weighted course, multiply each category score by its weight and add the results. In a points-based course, divide total points earned by total points possible. That is the entire method; everything below is detail and practice.
Learning how to calculate your final grade by hand is worth the few minutes it takes. You will catch gradebook errors, understand exactly which assessments matter most, and never wonder "where did that grade come from" again. If you would rather skip the arithmetic, the calculator above does it instantly, and our final grade calculator page is built around the tool itself.
Step 1: find out which grading system your course uses
Before any math, check your syllabus for the grading breakdown. If you see categories with percentages (homework 20%, exams 50%), the course is weighted: follow Method 1 below. If you see only point values per assignment with no category percentages, the course is points-based: follow Method 2.
This distinction matters because the two methods are not interchangeable. Putting raw points into a weighted formula, or percentages into a points total, produces nonsense. When in doubt, look at how your online gradebook displays scores: percentages grouped under labeled categories means weighted; running point totals means points-based.
Method 1: how to calculate final grade with weighted categories
Weighted calculation in four steps:
1. List each category with its score and weight. Write down every grading category, your current percentage in it, and its weight from the syllabus.
2. Convert each weight to a decimal. Divide the percentage by 100: 20% becomes 0.20, 35% becomes 0.35.
3. Multiply each score by its weight. This gives each category's contribution in "grade points."
4. Add the contributions and verify the weights sum to 100%. The total is your final grade percentage.
Worked example. Categories: homework 88% (weight 20%), quizzes 76% (weight 15%), midterm 84% (weight 25%), final exam 91% (weight 40%).
Step 2: weights become 0.20, 0.15, 0.25, 0.40. Step 3: 88 × 0.20 = 17.6; 76 × 0.15 = 11.4; 84 × 0.25 = 21.0; 91 × 0.40 = 36.4. Step 4: 17.6 + 11.4 + 21.0 + 36.4 = 86.4%. Check: 20 + 15 + 25 + 40 = 100. The final grade is 86.4%, a B on the common scale.
Notice how the final exam, at 40% weight, contributes 36.4 of the 86.4 points: more than homework and quizzes combined. When learning how to calculate final grade, this is the key insight the math reveals, which is why heavily weighted exams deserve proportionally more preparation.
Method 2: how to calculate final grade with total points
Points-based calculation in three steps:
1. Add up all points you earned across every assignment, quiz, and exam.
2. Add up all points possible across the same items.
3. Divide earned by possible and multiply by 100.
Worked example. Your scores: homework 245 of 300, quizzes 180 of 200, midterm 320 of 400, final project 410 of 500.
Step 1: 245 + 180 + 320 + 410 = 1,155 points earned. Step 2: 300 + 200 + 400 + 500 = 1,400 points possible. Step 3: (1,155 ÷ 1,400) × 100 = 82.5%.
The points method treats every point equally, which has a strategic consequence: a 10-point homework is worth exactly one-tenth of a 100-point exam. There is no category to "hide" a weak area in and no heavyweight category to rescue you late. If your course works this way, consistency across the whole semester is the winning strategy.
Method 3: calculating a final grade when the final exam has not happened yet
Often you want to know how to calculate final grade before all scores exist, typically with the final exam still upcoming. The method: compute the weighted contribution of everything completed, then add a projected final exam score times its weight.
Worked example. Completed: homework 92% (weight 20%), quizzes 88% (weight 20%), midterm 79% (weight 30%). The final (weight 30%) is next week. First, the completed portion: (92 × 0.20) + (88 × 0.20) + (79 × 0.30) = 18.4 + 17.6 + 23.7 = 59.7 grade points banked out of 70 possible so far. Now project a final exam score of 85: 59.7 + (85 × 0.30) = 59.7 + 25.5 = 85.2% projected final grade.
Run two more projections to get your range: a 75 on the final gives 59.7 + 22.5 = 82.2%, and a 95 gives 59.7 + 28.5 = 88.2%. Your likely final grade sits between 82% and 88% depending on the final. For a tool built around this kind of scenario testing, see our what-if grade calculator.
How to calculate final grade in a spreadsheet
If you want to know how to calculate final grade numbers repeatedly through a semester, a spreadsheet beats retyping the formula every time. Set up four columns: A for the category name, B for your score as a percentage, C for the weight as a decimal, and D for the contribution, with the formula =B2*C2 in D2 copied down.
Using the Method 1 example: row 2 reads Homework, 88, 0.20, and D2 computes 17.6. Fill in the remaining rows the same way, then put =SUM(D2:D5) in D6 for the final grade: 86.4. Add a second cell with =SUM(C2:C5) as a built-in check that your weights total 1.0.
The spreadsheet approach shines when scores update weekly: you change one score in column B and the final grade recalculates instantly. It is the same weighted arithmetic from Method 1, just automated. For one-off checks, the calculator at the top of this page is faster; for a living grade tracker you maintain all semester, the spreadsheet wins.
Converting your percentage to a letter grade
Once you know how to calculate final grade percentages, the last step is mapping the number to a letter through your school's grading scale, and scales vary: some schools use plus/minus grades, some do not, and cutoff percentages differ. The most common US scale sets A at 90 and above (with A- from 90 to 92), B from 80 to 89, C from 70 to 79, D from 60 to 69, and F below 60. Always confirm against your syllabus, because a school that sets A at 93 will grade your 91% differently than one that sets it at 90.
Our grading scale chart shows the full common scale with plus/minus cutoffs and grade-point equivalents. One caution when converting: rounding. An 89.5% is a B+ on a strict scale and an A- where teachers round up. Ask how your teacher handles borderline percentages before assuming.
Checking your work: mistakes to avoid
Weights that do not total 100%. Add them every time. A syllabus listing 20 + 20 + 25 + 30 = 95% is hiding 5% somewhere, often participation or attendance. Find it before calculating.
Forgetting dropped scores. If the syllabus drops your lowest quiz, remove that quiz from the category average entirely. Averaging it in anyway understates your grade.
Using the final exam score twice. When projecting (Method 3), the final appears exactly once, multiplied by its weight. A common error is adding the projected final to the completed-work total and counting the completed work at full weight.
Ignoring curves. If exams are curved, raw percentages understate your grade. This guide covers the standard arithmetic; ask your teacher how any curve is applied. Our disclaimer notes the limits of hand calculations the same way.
For the reverse question, what score you must earn on the final to hit a target grade, the direct formula is on our page about what grade you need on the final exam. And if you want to understand how course grades feed into your cumulative record, see how to calculate GPA.
How to calculate final grade: FAQs
How do I calculate my final grade by hand?
For weighted courses: multiply each category percentage by its weight as a decimal and add the results. For points-based courses: divide total points earned by total points possible and multiply by 100. Both methods are worked through with examples above.
What is the formula for final grade?
Weighted: final grade = Σ(score × weight), with weights summing to 1.0. Points-based: final grade = (points earned ÷ points possible) × 100. The weights version is the one most high school and college courses use.
How do I calculate my final grade if I do not know the weights?
Check the syllabus first, then the online gradebook, where category weights are sometimes shown. If neither lists them, ask the teacher: it is a routine question. Without the weights, any calculation is a guess, so get the real numbers before doing the math.
How do I include extra credit when calculating my final grade?
In points-based courses, add extra credit points to your earned total (and to the possible total only if the syllabus says the course total increases). In weighted courses, fold the extra credit into the relevant category's percentage first, then run the weighted formula.
How do I calculate what I need on the final exam?
Use the formula: needed = (target grade − current grade × (1 − final weight)) ÷ final weight. Our final exam calculator page walks through this with worked examples, including how to tell when a target is mathematically impossible.
Why is my hand calculation different from the online gradebook?
Check four things: weights summing to 100%, no dropped score left in, no mixing of points and percentages, and no curve or extra credit the teacher applied. One of these explains nearly every discrepancy.
Do colleges calculate final grades differently from high schools?
The arithmetic is the same everywhere: weighted averages or point totals. What differs is the syllabus design: college courses often weight exams more heavily and may include curves, while high school courses often weight homework and classwork more. The method you use does not change, only the inputs.