Grade Calculator
Class grade from points or weighted categories
Grade Calculator
Know where you stand. Plan your next grade. Reach your goal.
Calculate your current grade
Enter your assignment scores below. Results update automatically.
Assignments
In weighted mode, enter each graded category's course weight. In points mode, enter points earned and points possible.
On this page:6 Sections
1. How to Use the Grade Calculator
Before you begin, gather your latest assignment scores and your course grading policy. You can enter grades as
percentages (92), points (45/50), or letter grades (B+).
1. Enter your assignments or grade categories. For a points-based class, add each assignment separately.
For a weighted class, enter categories such as Homework, Quizzes, Labs, and Exams. Use + Add Grade to
create additional rows. Category names are optional.
2. Enter your grades and weights. Add each score in the Grade field. If your course uses weighted categories,
enter the percentage weight for each category. For a points-based course, enter earned and possible points, such
as 45/50, and leave the Weight fields empty.
3.Review your grade. Your result updates as you enter your information. Under Options, select the grading scale
used by your class.
Your calculation is saved on your device, and you can use Save This Calculation to keep it for future updates.
Common Mistake to Avoid
Enter either a category's overall average or the individual assignments that make up that average—not both.
Including both can count the same coursework twice and produce an incorrect result.
Whenever possible, use your exact percentage or point score. Letter grades are converted to the midpoint of their percentage range; for example, a B+ may be treated as 88%, depending on the selected grading scale. If you need an example, select Try Sample Scores to fill in sample data.
Understanding Your Grade Calculator Results
Try the biology example below using weighted grading. The calculator displays your current average, the portion of the course graded so far, and the score you may need on your final exam.
| Result | Example | Explanation |
|---|---|---|
| Current grade | 85.14% (B) | Your average across the graded categories. On this scale, a B ranges from 83% to below 87%. |
| Course weight graded | 70% | The percentage of your total course weight included in the current calculation. |
| Grade points | 3.0 | The grade-point value assigned to a B on the selected 4.0 scale. |
| Calculation method | 59.6 ÷ 0.7 | The weighted scores are added together and divided by the total weight graded. |
| Final exam target | 91.4% | The estimated score needed on a final worth 30% of the course to reach the example's B+ target. |
Biology example scores: Homework: 92%, Quizzes: 84%, Labs: 88%, and Midterm: 79%.
2. Grade Scale: Convert Percentages to Letter Grades
The calculator uses a standard plus/minus grading scale to convert percentages into letter grades and grade points.
In Options, you can also select a 10-point grading scale without plus or minus grades (A = 90, B = 80, C = 70, and D = 60).
Keep in mind that grading thresholds and rounding rules may vary by school, instructor, or course.
| Letter Grade | Percentage | Grade Points |
|---|---|---|
| A+ | 97–100% | 4.0 |
| A | 93–96% | 4.0 |
| A− | 90–92% | 3.7 |
| B+ | 87–89% | 3.3 |
| B | 83–86% | 3.0 |
| B− | 80–82% | 2.7 |
| C+ | 77–79% | 2.3 |
| C | 73–76% | 2.0 |
| C− | 70–72% | 1.7 |
| D+ | 67–69% | 1.3 |
| D | 63–66% | 1.0 |
| D− | 60–62% | 0.7 |
| F | Below 60% | 0.0 |
Note: Grading cutoffs and grade-point values may vary by institution. Check your course syllabus for your school's official grading scale.
Common scores as a percentage
Divide the points you earned by the points possible, then multiply by 100.
For example, 12 out of 15 is 12 ÷ 15 × 100 = 80%, a B−.
| Score | Percentage | Letter Grade |
|---|---|---|
| 12/15 | 80% | B− |
| 25/30 | 83.33% | B |
| 32/35 | 91.43% | A− |
| 14/18 | 77.78% | C+ |
| 11/14 | 78.57% | C+ |
| 10/13 | 76.92% | C |
| 30/50 | 60% | D− |
| 11/20 | 55% | F |
Note: Letter grades follow the standard plus/minus grading scale. Your school's grading cutoffs may differ.
3. How to Calculate Your Overall Class Grade
Your syllabus decides which math applies. Some classes add up assignment points; others give
categories different weights.
Points-Based Grade Calculation
Formula
Class grade = total points earned ÷ total points possible × 100
Say you have a quiz and a test:
Points-Based Grade: 125 Points Earned Out of 150
| Assignment | Earned | Possible | Score |
|---|---|---|---|
| Quiz | 45 | 50 | 90% |
| Test | 80 | 100 | 80% |
Calculation: Quiz + Test = 125 of 150 total points. Divide 125 by 150 and multiply by 100 to get a class grade of 83.33%.
The quiz average is calculated by dividing 168 points earned by 200 possible points, giving 84%. Since the graded categories account for 70% of the course, divide 59.6 by 0.70 to get a current grade of 85.14%, which is a B on the standard grading scale. Dividing by 100% instead would incorrectly count the ungraded final exam as zero.
4. How to calculate a grade without weights
When every assignment is weighted equally, your overall grade is calculated by averaging the percentage scores.
This means a 20-point quiz can count just as much as a 100-point test, even though the test has more points available.
This differs from a points-based grading system, where each assignment’s impact depends on the points earned and
possible.For example, suppose you scored 18 out of 20 on a quiz, 82 out of 100 on a test, and 47 out of 50 on a project.
| Category | Score | Weight | Points | ||
|---|---|---|---|---|---|
| Homework | 92% | × | 15% | = | 13.8 |
| Quizzes | 84% | × | 20% | = | 16.8 |
| Labs | 88% | × | 15% | = | 13.2 |
| Midterm | 79% | × | 20% | = | 15.8 |
Four graded categories: 59.6 ÷ 0.70 = 85.14%
Adding points instead gives 147 ÷ 170 = 86.47%, because the test’s 100 points outweigh the quiz’s 20. To get
the unweighted 88.67% here, enter each score out of 100 (90/100, 82/100 and 94/100) and leave Weight blank.
5. How your next score could change your grade
Test a score before it’s graded: enter it, compare the result, then remove it or replace it with the real score
.In a points-based class
You have 125 of 150 points (83.33%), and the next assignment is worth 50 points:
| Next Score | New Total | New Grade |
|---|---|---|
| 45/50 | 170/200 | 85% |
| 30/50 | 155/200 | 77.5% |
In a weighted class
Improve your grade by updating the average for the relevant category while keeping its original weight unchanged.
For example, in the biology course, increasing the midterm score from 79% to 89% raises the overall grade from
85.14% to 88%, which is a B+. If you take another quiz, update the quiz category average instead of treating
the new quiz as the entire 20% category.
What do you need on the final?
In the biology example, completed assignments contribute 59.6 points toward your final course grade, while the final exam accounts for the remaining 30%. To earn a B+ with a target of 87%, you would need approximately 91.33% on the final.Below your results, select Plan My Final Exam and choose B+ (87%) as your target. Since 70% of the course has been graded, the calculator uses the remaining 30% for your final exam. It estimates that you need around 91.4% to reach your goal, rounding up slightly to help you avoid falling short.
6. Why Your Calculated Grade May Differ from Your Gradebook
Your calculated result should match your gradebook when both use the same scores, category weights, included
assignments, and rounding rules. If the numbers differ, review these common causes:
. Missing or ungraded assignments: A missing assignment marked as zero can lower your grade, while an
ungraded task may not count yet. In the biology example, adding a missing 50-point quiz changes the total
from 168/200 to 168/250. Your grade then falls from 85.14% to 67.2%.
. Dropped quiz scores: Some teachers remove the lowest quiz score when calculating averages. If your class
follows this rule, exclude both the points earned and the possible points for that quiz before calculating
the category average.
. Category averages: For a points-based category, divide total points earned by total points possible. A 50-point
quiz will have more impact than a 20-point quiz. However, some teachers give every assignment equal value,
regardless of its point total.
. Extra credit: Bonus marks can raise your score above 100%. For example, earning 23 points on a 20-point assignment
gives you 115%. Some courses also use separate extra-credit categories that add points without increasing the course
weight. Follow your teacher's instructions when entering these scores.
. Rounding rules: Your gradebook may store more decimal places than it displays. A score of 89.5% becomes an
A− only if your school's grading policy rounds it up and uses that grade boundary.
. Category weights totaling 100%: A total weight of 100% means all course categories are accounted for. It does
not mean every assignment has been graded. Your current result may change when new scores are added.
For the most accurate estimate, compare your calculator settings with your syllabus or gradebook rules. Small differences
in grading methods can lead to different results.
Frequently Asked Questions
How do I calculate my overall class grade?
To calculate your overall class grade, add the percentages from each assignment and divide by the number of assignments
if they are weighted equally. If your teacher uses a points-based system, divide the total points earned by the total points possible and multiply by 100.
What is the difference between a points-based grade and an average grade?
A points-based grade depends on the total points you earn compared with the total points available. An average grade gives each assignment equal importance by averaging its percentage score, regardless of how many points it is worth.
How do I calculate my grade if all assignments are weighted equally?
Convert each assignment score into a percentage, add the percentages together, and divide by the number of assignments. For example, scores of 90%, 82%, and 94% produce an average grade of 88.67%.
Does a 100-point test count more than a 20-point quiz?
Not necessarily. In an equally weighted grading system, both assignments count the same regardless of their point values. In a points-based system, the 100-point test usually has a greater impact because it contributes more points to the overall total.
How do I calculate my grade using points earned and points possible?
Add all the points you earned and divide them by the total points possible. Multiply the result by 100 to get your percentage grade. For example, earning 125 out of 150 points gives you a grade of 83.33%.