Assignment Grade Calculator
Enter the points you earned and the points possible to get your assignment percentage and letter grade. Then see how that one assignment changes your course grade.
17 ÷ 20 × 100 = 85.0%. Rounded to one decimal; letter on the typical US scale, your school's scale may differ.
Want to know how this score changes your course grade? Open the Course impact tab.
How to calculate an assignment grade
Divide the points you earned by the points possible, then multiply by 100 to get a percentage:
Assignment grade = points earned ÷ points possible × 100
- 17 out of 20: 17 ÷ 20 × 100 = 85.0%, a B.
- 42 out of 50: 42 ÷ 50 × 100 = 84.0%, a B.
Percentage to letter grade
This is the typical US scale; your school's scale may differ, so check your syllabus.
| Percentage | Letter |
|---|---|
| 97% and above | A+ |
| 93–96.9% | A |
| 90–92.9% | A- |
| 87–89.9% | B+ |
| 83–86.9% | B |
| 80–82.9% | B- |
| 77–79.9% | C+ |
| 73–76.9% | C |
| 70–72.9% | C- |
| 67–69.9% | D+ |
| 63–66.9% | D |
| 60–62.9% | D- |
| Below 60% | F |
Results are rounded to one decimal place before the letter is assigned. To see the grade points behind each letter, use the letter grade to GPA converter.
Extra credit and scores over 100%
If you earned bonus points, your score can go above 100%. 22 out of 20 is 22 ÷ 20 × 100 = 110.0%, and the calculator shows it as it is with a note.
Teachers handle extra credit differently. Some cap each assignment at 100%, some let the extra points carry into the category, and some add bonus points to the final course grade instead. Your syllabus or teacher can tell you which applies.
How one assignment affects your course grade
The Course impact tab needs four numbers: your current grade, how much of the course has been graded so far, the assignment's weight and your score on it. It then works out:
New grade = (current × graded so far + score × weight) ÷ (graded so far + weight)
- At 78% with 60% graded, a 92% on a 15% paper gives (78 × 60 + 92 × 15) ÷ (60 + 15) = 6060 ÷ 75 = 80.8%, moving you from C+ to B-.
- The same student scoring 55% on a 10% quiz gets (78 × 60 + 55 × 10) ÷ (60 + 10) = 5230 ÷ 70 = 74.7%.
The less of the course that has been graded, the more one assignment moves your grade. To track every category at once, use the course grade calculator; for the score you need on a final, use the final exam calculator. Your course letter grade then feeds into your GPA.
Frequently asked questions
How do I find an assignment's weight?
Check the grading breakdown in your syllabus. If it gives a category weight, such as homework 20% across five assignments, each one is worth 20 ÷ 5 = 4%. If your class is graded in points, divide the assignment's points by the total points for the course: a 50-point assignment in a 500-point course is worth 10%.
What happens to my grade if I miss an assignment?
A missing assignment usually counts as 0. With a current grade of 82%, 65% of the course graded and a 15% assignment, a zero gives (82 × 65 + 0 × 15) ÷ (65 + 15) = 5330 ÷ 80 = 66.6%. Handing it in late for 50% instead gives 76.0%, so partial credit is usually worth it.
How do I average several assignments?
If they all count the same, use the average grade calculator. If some are worth more than others, enter each percentage with its weight in the weighted grade calculator.
What is a passing grade on an assignment?
On the typical US scale, 60% is the lowest D and anything below 60% is an F. Your teacher or school may use a different cut-off, and some courses require a C or better, so check your syllabus.
Can I work out the score I need on an upcoming assignment?
Yes. Open the What-if tab, enter your current grade, how much of the course has been graded and the assignment's weight, then set your target grade. It shows the score you need and whether that is possible with this assignment alone.