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Exam Average Calculator

Two exam scores, and three completely different averages depending on who is asking. Pull a 30 out of 50 on the midterm and an 85 out of 100 on the final, and you can honestly report 76.7% (pooling the points), 75% (weighting the midterm at 40% and the final at 60%), or 85% (if your school drops your lowest exam and the midterm stops counting). All three are right. They answer different questions, and the trick is knowing which one your gradebook is actually using.

That ambiguity is why exams get their own tool. Quizzes are usually worth the same handful of points, so pooling them is simple math. Exams are not. A midterm is worth 50 points, the final is worth 100, and in most courses the final carries more weight than the points suggest — sometimes twice the weight. Add a policy where the lowest exam is dropped and suddenly the number you report depends entirely on which rule applies.

This calculator does all three, and it shows its working. Add every exam you have sat with the points you earned and the points it was worth. Leave the weight boxes blank and it pools the points. Fill them in and it weights each exam the way your syllabus does. Tick the drop-lowest box and it removes your weakest exam first, then averages whatever is left. You get the number and the formula that produced it, so you can check it against your own gradebook.

Add every exam you have sat — midterms, finals, quiz exams, anything marked out of points. Leave the weights blank and it pools the points; add weights and a midterm worth 40% counts for 40%.

The formula

Pooled (weights blank): exam average = total points earned ÷ total points possible × 100

Weighted: exam average = Σ (exam percentage × exam weight) ÷ Σ (exam weights)

Both formulas are in play because courses use both. If your exams are simply marked out of points and the gradebook adds them up, you want pooled. If your syllabus says the midterm is 40% and the final is 60%, you want weighted. The difference is not academic: on the worked example below the two methods land three points apart, which is the difference between a 75 and a 76.7 on your transcript.

Steps, in plain English

  1. Add a row for every exam you have sat — midterms, finals, quiz exams, anything graded out of points. The name is optional, but “Midterm” and “Final” make the breakdown table much easier to read.
  2. Fill in the points you earned and the points the exam was worth.
  3. Leave the weight boxes blank to pool the points. Or type each exam’s weight — 40, 60 — to weight them. You have to do all of them or none of them; a half-filled set of weights is rejected rather than guessed at.
  4. Tick “Drop my lowest exam” only if your school genuinely does that. It finds your weakest exam by percentage, removes it, and averages the rest.
  5. Hit Calculate. You get the average, the formula that produced it, and a row-by-row breakdown.

Worked example

Midterm: 30 out of 50. Final: 85 out of 100. Same two exams, three rules.

  • Pool the points: 30 + 85 earned out of 50 + 100 possible = 115 out of 150 = 76.7%
  • Weight them 40/60: the midterm is 60% and the final is 85%, so (60 × 40) + (85 × 60) = 2400 + 5100 = 7500, divided by 100 = 75%
  • Drop the lowest exam: the midterm is your weaker exam at 60%, so it goes, and the final stands alone at 85%

Notice the direction of travel. Weighting the final more heavily lowers the number here, because the strong exam is the one getting extra weight but the weak midterm was dragging the pooled figure up in a way that flattered the overall average. That is the whole reason weighting exists: a 100-point final is not just twice as important as a 50-point midterm because it has twice the points.

And drop-lowest is the big swing. Going from 76.7% to 85% on the strength of one policy is not a trick, it is your gradebook applying a rule you did not know about. If you did not know that was the rule, the honest move is to ask before you celebrate.

Frequently asked questions

Should I pool the points or weight the exams?

Check your syllabus or course outline, because this is not a preference, it is a rule somebody else wrote. If it lists percentages for each exam, weight them. If it just lists point values and says the exam average is total points over total points, pool them. When a course is unweighted, the two methods agree anyway, so pooling is the safe default.

What does dropping my lowest exam actually do?

It finds the exam with the lowest percentage, takes it out completely, and averages whatever remains. If you drop a 20%-weight quiz exam, the remaining weights are re-normalised rather than left short, so the average does not get artificially inflated by a gap in the total. You cannot drop your only exam, because a single exam is not a choice.

How is this different from the quiz average calculator?

Scope and rules. The quiz average calculator pools every quiz you took, full stop — quizzes are small and near-uniform, so pooling is the whole job. This one is built for the exam cases that break that simplicity: different weights per exam, and drop-lowest policies. If your marks are quizzes, use the quiz tool. If they are midterms and finals, use this one.

What if my exam weights do not add up to 100?

It still works, because the calculator divides by the total of the weights you entered rather than assuming 100. Enter 2 and 3 instead of 40 and 60 and you get the same answer. The one thing it refuses is all-zero weights, since that has no answer at all.

Can I turn my exam average into a course grade or a GPA?

Not on its own. An exam average only covers the exams, and your course grade also includes assignments, quizzes, and participation. Once you know how the exams were weighted inside the course, the weighted grade calculator blends the full picture. If the term is done and you have final course percentages, the GPA calculator turns those into GPA points.

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