Grade Calculator
Use this free grade calculator to find your current grade, work out the score you need on your final exam, or convert a percentage to a letter grade. Enter your assignments, tests, and their weights, and the calculator returns your overall weighted grade as both a percentage and a letter — instantly. It works for any class in high school or college, whether your syllabus uses weighted categories or a straight points system.
Grade Calculator
Enter questions and how many were wrong for an instant score.
Enter how many questions are on the test to begin.
Grading chart
| Wrong | Score | Grade |
|---|
How this grade calculator works
A test grade is the share of questions you answered correctly, expressed as a percentage and mapped to a letter grade. Subtract the wrong answers from the total, divide by the total, and multiply by 100.
score = (correct ÷ total) × 100Example: 18 right out of 20 is (18 ÷ 20) × 100 = 90%, an A-. The grading chart lists the score for every possible number of wrong answers, so you can grade a whole stack at a glance.
Enter the number of questions and how many were missed, and it returns the percentage and letter grade instantly.
A quick-reference table showing the score for every possible number of wrong answers — handy when grading a stack of papers.
Yes — use the grade percentage calculator, which turns points earned out of a total into a percentage and letter.
Calculate Your Current Weighted Grade
Most courses don’t weigh every assignment equally — homework might count for 20% of your grade while the final counts for 35%. To calculate your current grade, enter each category (or individual assignment), its score, and how much it’s worth. The calculator multiplies each score by its weight, adds them together, and divides by the total weight to give your weighted average. If your class grades on total points instead, switch to points mode and enter points earned out of points possible.
Final Grade Calculator: What You Need on Your Final
Heading into finals and wondering what you need to keep your grade where you want it? Switch to the final grade tab and enter your current grade, the overall grade you’re aiming for, and how much your final exam is worth. The calculator shows the exact score you need on the final to reach your target. If the number comes back above 100%, your goal isn’t reachable through the final alone; if you’ve already locked in a passing grade, it will tell you that too.
Formula: Grade Needed on the Final Exam
The math behind it is straightforward:
Required final = (Goal − Current grade × (1 − Final weight)) ÷ Final weight
Say your current grade is 85%, your final is worth 30%, and you want to finish with 88% overall. You’d need (88 − 85 × 0.70) ÷ 0.30 = 95% on the final.
How to Use the Grade Calculator
- Choose a tab: weighted grade, final grade needed, or quick score.
- Enter each assignment or category, its grade, and its weight — or points earned out of points possible.
- Add a row for every item, including any extra credit.
- Read your result: your percentage and letter grade update as you type. Nothing to submit, and nothing is saved or shared.
How Your Grade Is Calculated
A weighted grade reflects how much each part of your course counts toward the final mark. To find it, multiply each category’s score by its weight, then add the results:
Weighted grade = Σ (category score × category weight)
Here’s how that works for a typical class:
| Category | Score | Weight | Contribution |
|---|---|---|---|
| Homework | 88% | 20% | 17.60 |
| Quizzes | 92% | 20% | 18.40 |
| Midterm | 81% | 25% | 20.25 |
| Final exam | 75% | 35% | 26.25 |
| Total | 100% | 82.5% |
Add the contributions together and you get 82.5% — a B− on most grading scales.
Grade Scale: Percentage to Letter Grade
Once you have your percentage, this scale converts it to a letter grade and its GPA value. Exact cutoffs vary by school and instructor, so always confirm against your syllabus.
| Letter | Percentage | GPA (4.0) |
|---|---|---|
| A | 93–100 | 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 |
GPA vs. Grade Percentage
Your grade percentage is your score in a single class. Your GPA (grade point average) is the average of your letter grades across all your classes, converted to points on a 4.0 scale and often weighted by credit hours. This calculator gives you the percentage and letter grade for one course; to combine grades from several classes into an overall average, use our [GPA Calculator].
Frequently Asked Questions
How do I calculate my current grade?
Enter each assignment, test, or category along with its score and weight. The calculator multiplies each score by its weight, adds the results, and divides by the total weight to return your current grade as both a percentage and a letter grade. You can also switch to points mode and enter points earned out of points possible.
What grade do I need on my final exam?
Open the final grade tab and enter your current grade, the overall grade you want, and how much your final is worth. The calculator subtracts the value of your completed work from your goal and divides by the final’s weight to show the exact score you need. If the result is over 100%, the target isn’t reachable from the final alone.
How is a weighted grade calculated?
A weighted grade multiplies each category’s score by its weight, then adds those contributions together. For example, if homework (20%) averages 90% and the final (35%) is 80%, those contribute 18 and 28 points respectively. Summing every weighted category gives your overall grade, so heavier categories move your mark more than lighter ones.
What’s the difference between a weighted and unweighted grade?
An unweighted grade treats every assignment equally, so a quiz and a final count the same. A weighted grade reflects how much each category is actually worth in your syllabus — a final worth 35% affects your grade far more than a 5% quiz. Most courses use weighted grading, which is the default in this calculator.
How do I convert a percentage to a letter grade?
Match your percentage to a standard scale: 90–100 is an A, 80–89 a B, 70–79 a C, 60–69 a D, and below 60 an F, with plus and minus bands inside each range. The calculator does this automatically, but exact cutoffs vary by school, so check your syllabus to be sure.
What grade do I need to pass?
Passing usually means a 60% (a D) or higher, though many programs require a C (70%) or better, especially for major or prerequisite courses. Enter your target as the passing grade in the final grade tab and the calculator will show the minimum score you need on your remaining work to get there.
Does this work for college and high school?
Yes. The calculator works for any class that uses percentages, weighted categories, or total points, which covers virtually all high school and college courses. Just enter the weights or point values from your own syllabus — the method is the same whether you’re calculating a high school class grade or a university course grade.
How do I include extra credit?
Add extra credit as its own row. If it’s worth bonus points, add it in points mode so it increases your total without inflating the denominator. If your teacher adds it as a percentage boost, enter it as a small extra-weight category. Either way, the calculator folds it into your overall grade automatically.