Enter your assignment scores and weights to see your current grade instantly. This grade calculator handles weighted grades, final exam scenarios, and GPA conversions so you know exactly where you stand.
Grade Calculator
A grade calculator takes your scores and their weights, then returns your overall grade as a percentage and letter grade. It saves you from doing the math by hand every time a new assignment comes back.
To use the calculator above:
- Enter each assignment or category name.
- Add the score you earned (as a percentage or points).
- Enter the weight for that assignment or category.
- Click calculate.
The tool multiplies each score by its weight, sums the results, and divides by the total weight. That gives you a weighted average, which is your current course grade.
If all your assignments count equally, set every weight to the same number. The calculator then returns a simple average.
How to Calculate Your Weighted Grade
Most courses don't treat every assignment the same. A final exam might be 30% of your grade while homework is only 10%. A weighted grade accounts for these differences.
The formula is straightforward:
Weighted Grade = (Score₁ × Weight₁ + Score₂ × Weight₂ + …) ÷ (Weight₁ + Weight₂ + …)
Multiply each score by its weight. Add those products together. Then divide by the sum of all the weights. The result is your weighted average as a percentage.
Weight and Score for Each Assignment
Every syllabus assigns a weight to each grading category. Common categories include:
- Homework (10%–20%)
- Quizzes (10%–15%)
- Midterm exam (15%–25%)
- Final exam (20%–35%)
- Participation or projects (5%–15%)
Your score is what you earned on that assignment. If you got 42 out of 50 points on a quiz, your score is 84%. Enter that percentage alongside the quiz weight, and the calculator handles the rest.
Some teachers use a points-based system instead of percentage weights. In that case, your course grade is total points earned divided by total points possible. Enter each assignment's earned points and possible points, and the math works out the same way.
Test Grade and Quiz Score
Wondering how to calculate your test grade? Divide the number of correct answers by the total number of questions, then multiply by 100.
Test Grade = (Correct Answers ÷ Total Questions) × 100
For example, if you answered 33 out of 40 questions correctly, your test grade is 82.5%.
A few common lookups:
- 27 out of 40 = 67.5%, typically a D+ on a standard grading scale. Whether that counts as passing depends on your school's minimum. Many schools require at least a 60% or a D.
- 7 wrong out of 40 = 33 correct = 82.5%, which usually lands at a B or B-.
Your quiz score works the same way. The only difference is how much weight it carries in your overall course grade.
Final Grade Calculator
The final grade calculator answers one specific question: what score do I need on my final exam to get the grade I want?
Your final exam counts way more than a quiz, so this matters. Enter three values:
- Your current grade (before the final).
- The weight of the final exam.
- Your desired course grade.
The calculator returns the minimum final exam score you need.
Calculate the Final Exam Score You Need
The formula behind this calculation:
Required Final Exam Score = (Desired Grade − Current Grade × (1 − Final Weight)) ÷ Final Weight
Say your current grade is 78%, the final exam is worth 30%, and you want an 85% in the course.
Required Score = (85 − 78 × 0.70) ÷ 0.30 Required Score = (85 − 54.6) ÷ 0.30 Required Score = 30.4 ÷ 0.30 Required Score = 101.3%
In this case you'd need over 100% on the final, which tells you an 85% course grade may not be realistic. The calculator gives you an honest answer so you can adjust your target.
Advance Your Course Grade Before the Semester Ends
If the required final exam score looks too high, you still have options to advance your course grade before the semester ends.
- Improve remaining assignments. Any homework, quiz, or project still ahead can raise your current grade before the final.
- Check for extra credit. Some teachers offer additional points that shift your weighted average.
- Recalculate after each grade. Update your current grade in the calculator as new scores come in. Your required final exam score will drop as your current grade rises.
Use the calculator repeatedly throughout the semester. Small improvements early can make the final exam far less stressful.
Weighted Grade Calculation
Average, Weight, and Percentage
A simple average treats every number equally. A weighted average gives more influence to categories that count more.
Here's a quick comparison:
| Method | Formula | Best for |
|---|---|---|
| Simple average | Sum of scores ÷ number of scores | Equally weighted assignments |
| Weighted average | Sum of (score × weight) ÷ sum of weights | Courses with category weights |
Weights can be expressed as percentages (30%), decimals (0.30), or ratios. The calculator accepts percentages. Just make sure your weights add up to 100% for a complete course grade.
If you've only completed part of the semester, the weights won't add to 100% yet. The calculator divides by the sum of weights entered, giving you an accurate grade based on work completed so far.
Course Grade and Grading Scale
Your numerical percentage maps to a letter grade through a grading scale. Most schools in the US use a version of the standard scale, but thresholds vary.
A common grading scale:
| Percentage Range | Letter Grade |
|---|---|
| 93–100 | A |
| 90–92 | A- |
| 87–89 | B+ |
| 83–86 | B |
| 80–82 | B- |
| 77–79 | C+ |
| 73–76 | C |
| 70–72 | C- |
| 67–69 | D+ |
| 63–66 | D |
| 60–62 | D- |
| Below 60 | F |
Check your syllabus. Some schools don't use plus or minus grades, and some set different cutoffs.
Letter Grade, Grade-Point, and Plus or Minus
Each letter grade corresponds to a grade-point value used to calculate your GPA.
| Letter Grade | Grade Points |
|---|---|
| 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 | 0.0 |
The plus and minus grading scale adjusts your GPA in 0.3 increments above and below the base letter. An A- is 3.7 instead of 4.0. A B+ is 3.3 instead of 3.0. These increments may look small, but they add up across a full semester.
What if your school doesn't use plus or minus grades? Then an A is 4.0, a B is 3.0, a C is 2.0, and so on. The calculator lets you select your school's grading system so the conversion is accurate.
Should a student whose percentage lands exactly on a threshold (say, exactly 90%) get the higher or lower letter grade? Schools handle this differently. Most round in the student's favor, giving the higher letter grade at exactly the cutoff. Confirm your school's policy if you're right on the line.
GPA and Semester Grade-Point Average
Your GPA (grade-point average) is the weighted average of your grade points, using credit hours as the weights.
GPA = Sum of (Grade Points × Credit Hours) ÷ Total Credit Hours
Example for one semester:
| Course | Letter Grade | Grade Points | Credit Hours | Quality Points |
|---|---|---|---|---|
| Math | B+ | 3.3 | 4 | 13.2 |
| English | A | 4.0 | 3 | 12.0 |
| History | B- | 2.7 | 3 | 8.1 |
| Totals | 10 | 33.3 |
Semester GPA = 33.3 ÷ 10 = 3.33
Your cumulative GPA includes every semester. To calculate it, add up all quality points from every course you've taken and divide by total credit hours attempted. The calculator does this automatically when you enter each course.
Test Grade Calculator
The test grade calculator focuses on a single exam or quiz. Enter the total number of questions and the number you answered correctly (or the number you got wrong). The tool returns your test grade as a percentage and the corresponding letter grade.
This is helpful right after a test when you know how many you missed but want to see where that score falls on the grading scale.
How to use it:
- Enter the total number of questions on the test.
- Enter the number of correct answers (or the number wrong).
- The calculator shows your percentage score and letter grade.
You can also use it to set a target. If you need at least a B (83%) on a 40-question test, the calculator tells you that you can miss no more than 6 questions (34 correct out of 40 = 85%).
Grade Calculation for Your Course and Semester
Grade calculation comes down to a few repeatable steps, whether you're figuring out one assignment or an entire semester.
- Gather your scores. Collect every graded assignment, quiz, test, and exam.
- Note the weight of each category. Check your syllabus for the percentage each category counts.
- Calculate your weighted grade. Multiply each category score by its weight, sum the results, and divide by total weight.
- Convert to a letter grade. Use your school's grading scale to find the corresponding letter.
- Calculate GPA. Multiply each course's grade points by its credit hours, sum those products, and divide by total credit hours.
This calculator handles all five steps. Enter your data, and it returns your course grade, letter grade, and GPA estimate in seconds.
These results are estimates based on the scores and weights you enter. Always confirm final grades with your instructor or registrar. Grading policies, rounding rules, and extra credit can adjust your official grade.
Need on My Final Exam: Quick Reference for Your Final Exam
Use this table as a quick reference. It shows the score you need on your final exam based on your current grade and desired final grade, assuming the final exam is worth 30% of your overall course grade.
| Current Grade | Want a 70% | Want an 80% | Want a 90% |
|---|---|---|---|
| 60% | 93.3% | 126.7%* | 160%* |
| 70% | 70% | 103.3%* | 136.7%* |
| 75% | 58.3% | 91.7% | 125%* |
| 80% | 46.7% | 80% | 113.3%* |
| 85% | 35% | 68.3% | 101.7%* |
| 90% | 23.3% | 56.7% | 90% |
| 95% | 11.7% | 45% | 78.3% |
Scores above 100% are not achievable without extra credit.
If your final exam contributes a different percentage weight, enter your actual numbers into the calculator above for accurate results. This table is a starting point, not a substitute for a personalized calculation.
The grade calculator helps you calculate what you need, plan ahead, and avoid surprises on your transcript. Enter your scores now and see where you stand.