Use this free semester grade calculator to enter your grade for each part of the semester and how much it counts. You get your semester grade and letter. Leave a part blank if it has not happened yet, such as the final exam, and the calculator shows the score you need on it for each letter.
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Enter a grade for at least one component to see your semester grade.
| Grade | Minimum percent | Average needed on the remaining work |
|---|
| Component | Grade | Weight | Points toward the semester grade |
|---|
Your semester grade is the weighted average of its parts. Multiply each part’s grade by its weight, add the results, and divide by the total weight. In the example below, Quarter 1 at 84% and Quarter 2 at 79%, each with weight 40, give (3,360 + 3,160) ÷ 80 = 81.5% so far, a B on the standard scale. To finish with 80% overall, the final exam, worth 20, must come in at 74% or more. The semester grade calculator above does this for you.
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Schools combine the parts of a semester in different ways. Some average two quarters or terms equally. Others count each quarter for 40% and a semester exam for 20%. Others add a midterm as its own part. This calculator handles all of them the same way: every part has a grade and a weight, and the semester grade is the weighted average.
Check your syllabus or student handbook for the weights your school uses. The presets above are only common examples. If your semester is one long list of assignments sorted into categories such as homework and tests, the weighted grade calculator fits better. If it is simply points added up, use the points-based grade calculator.
Leave the grade blank for any component that is still to come. The semester grade calculator then shows:
A blank grade is not counted as zero. If you want a missing part to count as zero, enter 0. For a single exam and one target grade, the final grade calculator gives the same answer in a simpler form.
Weights are treated as shares of the total you enter. If they add up to 100 they are percentages. If they add up to something else, because a part is missing or you typed one wrongly, the calculator divides by the total you entered and tells you that it is not 100. Check your syllabus in that case, because a missing part changes the result.
Semester grade = Sum of (grade × weight) ÷ Sum of weights
Score needed on the rest = (Target × Total weight − Sum of grade × weight so far) ÷ Weight not graded
The letter is the first grade on the scale, counting down from the top, whose minimum is at or below the result. A result exactly on a cutoff earns that grade. The full rules are on the grading methodology page.
Example 1: Quarter 1 is 84%, Quarter 2 is 79%, and the final exam, worth 20, has not happened. The weights are 40, 40 and 20.
| Question | Result | Standard | Plus/minus |
|---|---|---|---|
| Grade so far (6,520 ÷ 80) | 81.5% | B | B- |
| Lowest possible (0% on the exam) | 65.2% | D | D |
| Highest possible (100% on the exam) | 85.2% | B | B |
| Needed on the exam for 80% | 74% | B | B- |
| Needed on the exam for 70% | 24% | C | C- |
| Needed on the exam for 90% | 124% | Out of reach | |
To finish with 80% you need 80 × 100 = 8,000 weighted points. You have 84 × 40 + 79 × 40 = 6,520, so the exam must supply 1,480 over its weight of 20, which is 74%. For 90% the exam would need 124%, so an A is out of reach unless there is extra credit.
Example 2: the same semester after the exam, with Quarter 1 at 91%, Quarter 2 at 86% and the exam at 78%. The semester grade is (3,640 + 3,440 + 1,560) ÷ 100 = 86.4%, a B on both example scales. A plain average of the three grades would be 85.0%, which shows why the weights matter.
The standard and plus/minus scales are examples, not universal rules. If your school uses different cutoffs, choose Custom and enter them, or build a chart with the grading scale calculator.
Schools combine terms and exams in different ways, so always check your own syllabus first. For background on the ideas used here, see Grading in education and Weighted arithmetic mean on Wikipedia.
Yes. It is free, needs no sign-up, and runs in your browser. Your grades are not sent anywhere or saved.
At some schools it is, which is the “two quarters, no exam” preset (50 / 50). At others the exam counts for part of it. Your syllabus decides, so change the weights to match.
Leave the grade blank. It is counted as work still to come, not as zero. Enter 0 if you want it to count as zero.
No, but they normally do. If they do not, the calculator divides by the total you entered and shows a note, so you can check your syllabus.
Yes. Choose “My own components” or press “Add a component”, then give each part a name and a weight. You can have up to 30.
The value was rounded for display only. A result like 89.5% is graded on the unrounded number, and the page tells you when this happens. If your teacher rounds first, turn on “Round before grading” in Settings.
No. Only your scale and display settings are saved on this device. Your grades stay in the page and are not sent anywhere.
It is a quick, transparent calculation. Your instructor or school sets the official grade. See the disclaimer.