Grade Calculator
This free grade calculator finds your class grade right now from weighted categories (homework 20%, tests 40%…) or from total points. Then the letter grade updates as you type, and every step of the math is shown.
🔒 Nothing you type leaves your browser. No sign-up, no logins.Using the grade calculator in 3 steps
- First, choose how your teacher grades. Pick Weighted categories if your syllabus lists percentages, or Total points if every assignment adds points.
- Next, enter your scores. Add one row per category or assignment. Then type the score and its weight (or the points possible).
- Finally, read your grade. Your percent and letter grade update as you type. Also, “Show the math” lists every step.
Grade calculator formulas
Weighted grade formula
First, multiply each category’s average score by its weight. Then add the results. Finally, divide by the total weight. If your weights add up to less than 100%, the answer is your grade so far. For instance, the final exam may not have happened yet.
Points grade formula
Use this when every assignment simply adds points to one total. In fact, many middle school and college classes grade this way.
Grade calculator worked example
| Category | Score | Weight | Score × weight |
|---|---|---|---|
| Homework | 92% | 20 | 1,840 |
| Quizzes | 85% | 30 | 2,550 |
| Midterm | 78% | 20 | 1,560 |
| Total | 70 | 5,950 |
So the grade is 5,950 ÷ 70 = 85.00%, a B. Because the final (the other 30%) hasn’t happened yet, this is the grade so far.
Similarly, with points: 45/50 + 18/20 + 82/100 = 145/170 = 85.29%.
Percent to letter grade scale
| Percent | Letter | 4.0 points |
|---|---|---|
| 97–100 | A+ | 4.0 |
| 93–96 | A | 4.0 |
| 90–92 | A- | 3.7 |
| 87–89 | B+ | 3.3 |
| 83–86 | B | 3.0 |
| 80–82 | B- | 2.7 |
| 77–79 | C+ | 2.3 |
| 73–76 | C | 2.0 |
| 70–72 | C- | 1.7 |
| 67–69 | D+ | 1.3 |
| 65–66 | D | 1.0 |
| Below 65 | F | 0.0 |
This is the most common US plus/minus scale. However, many schools use a simpler 10-point scale (90–100 = A), so check your syllabus. For background on how letter grades turn into a GPA, see College Board’s GPA guide.
Weighted grade calculator
Most syllabi list categories with percentages. For example, homework might be 20%, quizzes 30% and tests 50%. Enter your average in each category along with its weight. Also, weights don’t have to add to 100. Instead, the tool divides by the total you enter and tells you when it isn’t 100.
Class grade and course grade calculator
A class grade is simply your weighted or points average for one course. So use one row per category, or one row per assignment if your teacher grades by points.
Test grade calculator
To grade a single test, switch to Total points and enter one row. For example, 42 out of 50 is 84%, which is a B.
Changing schools mid-year?
When a family moves states, a student’s grades can come from two schools. In that case, each school may weight categories differently. So work out each school’s grade with its own weights. Then ask the new school how transfer grades will be recorded.
Summary
Weighted: multiply each score by its weight, add them up, and then divide by the total weight.
Points: divide points earned by points possible.
Letter: finally, compare the percent to your school’s scale.
Grade calculator FAQ
How do I calculate my grade?
For weighted categories, multiply each score by its weight, add those products, and then divide by the total weight. For points-based classes, instead divide points earned by points possible and multiply by 100.
What if my weights don’t add up to 100%?
In that case, the calculator divides by the total weight you entered. As a result, you see your grade on the work graded so far.
How do I calculate a weighted grade?
Weighted grade = Σ(score × weight) ÷ Σ weight. For example, homework 92% at 20, quizzes 85% at 30 and a midterm 78% at 20 give 5,950 ÷ 70 = 85.00%.
What grade do I need on my final?
Use the final grade calculator. Simply enter your current grade, the grade you want, and how much the final is worth.
Does this grade calculator store my grades?
No. It runs only in your browser, so it sends nothing anywhere. Also, it never asks for a school portal login.