Quiz Grade Calculator: Score One Quiz or Average Them All

Use this free quiz grade calculator to grade a single quiz in seconds, or enter several and see the average. You can drop the lowest scores, compare an equal-weight average with a total-points average, and see what reaches the next grade.

Note: the calculator has not started. If this message stays, JavaScript is switched off in your browser, or this website is blocking the calculator’s script. Site owners: see the install guide, “calculator does not respond”.

Your quizzes

What are you grading?
Points earned. Decimals are fine, such as 7.5.
Points possible, more than 0.
These are example scales, not universal standards. Schools and teachers set their own cutoffs. Choose Custom to enter yours.
Settings and custom scale

The shortcut works when keyboard focus is inside the calculator and not in a text field. The Reset button does the same thing.

This calculator runs in your browser and does not send your numbers anywhere. Only your scale settings are saved on this device. Your scores are not.

Result

Enter your quiz score to see your grade.

Quiz grade calculator: the quick answer

To grade one quiz, divide the points you earned by the points possible and multiply by 100: 8 of 10 is 80%. To average several quizzes, either average their percentages so every quiz counts the same, or add up all the points so bigger quizzes count more. With quizzes of 10/10, 2/5 and 19/20, the average of percentages is 78.33%, the total points give 31 of 35 = 88.57%, and dropping the lowest quiz gives 97.5%. The quiz grade calculator above does all of this, so check your syllabus for the method your teacher uses.

Quiz grade calculator example: quizzes of 10/10, 2/5 and 19/20 average 78.33%, total 88.57% on points, or 97.5% with the lowest quiz dropped
Quiz grade calculator example: the same three quizzes under three methods.

How the quiz grade calculator handles one quiz or several

For one quiz, enter the score and the points possible. You get the percentage and letter, the points you have to spare above your grade’s cutoff, and how many more points the next grade needs.

For several quizzes, enter each score and the points possible, one quiz per box. Boxes you leave completely empty are ignored, so you can fill in only the quizzes you have taken. If a box is half filled, the calculator asks for the missing number instead of guessing. For a single longer test, the test grade calculator for questions missed or points earned is a better fit.

Quiz grade calculator: equal-weight average or total points?

There are two common ways to average quizzes, and they can give different grades.

  • Average of percentages turns each quiz into a percentage, then averages them, so a 5-point quiz counts as much as a 20-point quiz.
  • Total points adds up every point you earned and divides by every point available, so a 20-point quiz counts four times as much as a 5-point quiz.

Your syllabus decides which one applies. If it says “quizzes are averaged”, the equal-weight method is the usual reading. If it says “points are added up”, use total points. The result shows both, and tells you when they land on different letters. If quizzes count for a fixed share of the course, the grade average calculator for percentages, letters, or points explains the wider picture.

Dropping the lowest quizzes in the quiz grade calculator

Many courses ignore the lowest quiz or two. Enter how many to drop and the calculator leaves out the quizzes with the lowest percentages. If two quizzes are tied, the one listed first is dropped. Dropped quizzes are marked “Dropped” in the breakdown table, and you can never drop every quiz.

If your teacher drops quizzes by a different rule, such as the lowest number of points, delete that quiz’s box yourself and leave the drop count at 0.

Quiz grade calculator formulas and worked examples

Percentage = (Score × 100) ÷ Points possible Average of percentages = Sum of the counted percentages ÷ Number of counted quizzes Total points = (Sum of counted scores × 100) ÷ Sum of counted points possible

The letter is the first grade on the scale, counting down from the top, whose minimum is at or below the percentage. A score exactly on a cutoff earns that grade. The full rules are on the grading methodology page.

Worked examples for one quiz and for three quizzes, with and without dropping the lowest
EntryMethodPercentStandardPlus/minus
One quiz: 8 of 10Single quiz80%BB-
Three quizzes: 10/10, 2/5, 19/20Average of percentages78.33%CC+
Same three quizzesTotal points (31 of 35)88.57%BB+
Same three, lowest droppedAverage of percentages97.5%AA+

The short 5-point quiz scored 40%. With equal weights it pulls the average down to a C, but with total points it is only 5 of 35 available points, so the grade is a B. Dropping that quiz lifts the average to 97.5%. In the total-points case, 31 of 35 is half a point short of the 31.5 that 90% of 35 would need.

Your grading scale in the quiz grade calculator

The standard and plus/minus scales are examples, not rules. If your syllabus uses different cutoffs, choose Custom and enter them, or build and print a chart with the grading scale calculator.

Sources and further reading

Teachers average quizzes in different ways, so check your syllabus first. For background, see Arithmetic mean and Grading in education on Wikipedia.

Related tools

Quiz grade calculator questions

Is this quiz grade calculator free and private?

Yes. It is free, needs no sign-up, and runs in your browser. Your scores are not sent anywhere or saved.

Which average should I use?

Use the one your syllabus describes. “Every quiz counts the same” points to the average of percentages. “Total points” points to the points method. When they give the same letter, it does not matter.

Can the quizzes have different numbers of points?

Yes. Each quiz has its own “out of” box. Different sizes are exactly where the two averaging methods start to disagree.

Do empty boxes count as zero?

No. A box with both fields empty is ignored. If you want a missed quiz to count as zero, enter 0 as the score and the points it was worth.

Why can’t I drop every quiz?

There would be nothing left to average. With four quizzes entered you can drop up to three.

Why is my result shown as 90% but graded as a B?

The value was rounded for display only. A score like 89.5% is graded on the unrounded number, and the result tells you when this happens. If your teacher rounds first, turn on “Round before grading” in Settings.

Does it save my scores?

No. Only your scale and display settings are saved on this device. Scores you type are cleared when you leave the page. For a class sheet that can keep scores in your browser, see the class grade calculator.

Is this quiz grade calculator result what my school will record?

It is a quick, transparent calculation. Your instructor or school sets the official grade. See the disclaimer.