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Test Grade Calculator

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Your Results

You got 33 of 40 right (7 wrong), a test grade of 82.5%, which is a B- on a typical scale. With a passing grade of 60%, you passed: you could have missed up to 16 and still passed. 1 more right would have made it a B.

82.5%
Your test grade
B-
Letter Grade
33 / 40
Correct out of Total
16
Most Wrong to Pass (60%)
1
More Right for B

How many correct answers earn each letter

  • Your grade
  • Passing
  • Below passing
Grading Table
WrongCorrectGradeLetter
040100%A+
13997.5%A+
23895%A
33792.5%A-
43690%A-
53587.5%B+
63485%B
73382.5%B-
83280%B-
93177.5%C+
103075%C
112972.5%C-
122870%C-
132767.5%D+
142665%D
152562.5%D-
162460%D-
172357.5%F
182255%F
192152.5%F
202050%F
211947.5%F
221845%F
231742.5%F
241640%F
251537.5%F
261435%F
271332.5%F
281230%F
291127.5%F
301025%F
31922.5%F
32820%F
33717.5%F
34615%F
35512.5%F
36410%F
3737.5%F
3825%F
3912.5%F
4000%F

Grade = correct ÷ 40 × 100. Your score is highlighted, and grades below 60% are greyed. Letters use a typical scale, where your school's may differ.

What Is a Test Grade?

A test grade is the share of a test you got right, written as a percent. Getting 33 of 40 questions right is 82.5%, whatever the test is about. Teachers then turn the percent into a letter grade using a grading scale.

  • Percent: correct answers out of the total, times 100. It works the same for questions and for points.
  • Letter grade: the band the percent falls in, such as B- for 80% to just under 83% on a typical scale.
  • Pass or fail: whether the percent reaches the passing grade, often 60%.

Teachers often use a grading table (sometimes called an easy grader) that lists the grade for every possible number wrong, so they can mark a stack of tests quickly. The calculator builds one for any test.

Which calculator should I use?

  • Test Grade Calculator: for one test or quiz, when you know how many you got wrong or right.
  • Grade Calculator: to combine several tests, quizzes and homework into a weighted course grade, or to find the score you need on a final exam.

How to Calculate a Test Grade

Take away the number wrong from the total, divide by the total, and multiply by 100:

Grade= total−wrong total ×100
  • Total: the number of questions, or the points the test is out of.
  • Wrong: the questions missed or the points lost. Total − wrong is the number correct, so if you know that, divide it by the total.

Example

A test has 40 questions and you get 7 wrong:

  • Correct: 40 − 7 = 33
  • Grade: 33 ÷ 40 × 100 = 82.5%, which is a B-.
  • Passing at 60%: 40 × (100 − 60) ÷ 100 = 16, so you can miss up to 16 and still pass.

The letter grade scale

The calculator uses a typical US scale with plus and minus grades. Schools differ, so check your syllabus.

LetterStarts AtGrade Points
A+97%4.3
A93%4.0
A-90%3.7
B+87%3.3
B83%3.0
B-80%2.7
C+77%2.3
C73%2.0
C-70%1.7
D+67%1.3
D63%1.0
D-60%0.7
F0%0.0

How to Use the Test Grade Calculator

"My test had 40 questions and I got 7 wrong. What's my grade, did I pass, and how close was I to the next letter?" This calculator answers that.

Let's enter the numbers for this example in each box. They are already filled in when the calculator opens, so you can follow along and then change any box to match your own test.

  • Total Points or Questions: Enter 40, which is what the test is out of. It can be up to 999,999, and decimals work.
  • Enter Your Score As: Choose Number wrong. Choose Number correct if you know how many you got right, or the points you earned.
  • Number Wrong: Enter 7, which is how many you missed. It can be from 0 up to the total, and half points such as 6.5 work.
  • Passing Grade: Enter 60, which is the lowest percent that passes. It can be from 0 to 100.
  • Table Step: Enter 1, which is the gap between rows in the grading table. Use 0.5 for a test with half points. Very long tables need a bigger step, so a table has about 1,000 rows at most.

Calculate and Reset

Click Calculate to see your results. If a box has a problem, such as more wrong answers than the test has, a message pops up under that box instead. With the default numbers you get:

  • Your Results: a short summary in words: 33 of 40 right, a grade of 82.5%, a B-, whether you passed and how much more the next letter takes.
  • Your Test Grade: the headline percent, 82.5%.
  • Letter Grade: B-, from the typical scale above.
  • Correct out of Total: 33 / 40.
  • Most Wrong to Pass: 16, the most you could miss and still reach 60%.
  • More Right for B: 1, the extra correct answers that would lift you to the next letter.
  • How many correct answers earn each letter: a bar for each letter across the scores that earn it. Your letter is in amber, passing letters in teal and failing ones in grey.
  • Grading Table: the grade and letter for every number wrong, from 0 to 40, with your score highlighted. Download Excel saves it with the formulas, ready to print or reuse for a class.
  • Share Results: a link that opens this calculator with your numbers filled in. Copy it, or share it on Facebook or X.

Click Reset to put every box back to its default and show the default results again. Your teacher's grading rules decide your actual grade, including curves, rounding and partial credit, which this calculator doesn't apply.