Enter the total number of questions and the number wrong to get an instant grade percentage and letter grade. The Easy Grader also generates a full grade chart showing every possible score — perfect for grading a whole stack of tests at once. Toggle half-point scoring and customize grade scale thresholds to match your classroom standards. Also try the Class Rank Calculator.
Grade Percentage
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Letter Grade
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Questions Correct
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Questions Wrong
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The Easy Grader divides the number of correct answers by the total number of questions, then multiplies by 100 to get a percentage. For example, if a student gets 3 wrong out of 20 questions, they scored 17/20 = 85%. See also our calculate Current Midterm Grade, Letter Grade & Weight Counted So Far — Midterm Grade.
The standard scale assigns A for 90–100%, B for 80–89%, C for 70–79%, D for 60–69%, and F for anything below 60%. You can switch to a strict or easy grading scale using the Grading Scale dropdown to match your school's policy.
The Full Grade Chart lists every possible number of wrong answers from 0 up to the total questions, showing the resulting percentage and letter grade for each. This lets teachers quickly look up a score for any student without re-entering data.
Yes — enable the 'Allow Half Points' toggle. This allows scores to be calculated using 0.5-point increments, which is useful when partial credit is awarded or when questions carry fractional point values. You might also find our Curved Grade — Grade Curve useful.
The Easy Grader supports tests with up to 500 questions, covering everything from short 5-question quizzes to large final exams.
Yes — the number of wrong answers cannot exceed the total number of questions. The calculator will flag this as invalid input and prompt you to correct the values before displaying a result.
Letter grades with plus/minus are assigned based on where your percentage falls within each grade band. For example, under the standard scale, 97–100% is an A+, 93–96% is an A, and 90–92% is an A−. Each band is split into three roughly equal parts.
You can choose from three preset grading scales — Standard, Strict, and Easy — using the Grading Scale selector. Each preset shifts the cutoff points for A, B, C, D, and F grades to match common school policies.