Type the total questions or points and the number wrong (or right). Get the score, the letter grade and a full grading chart you can print.
The score is the share of points earned: (total − wrong) ÷ total × 100. For example, 3 wrong out of 25 gives 22 ÷ 25 = 88%. The percentage is rounded to the number of decimal places you choose, and the letter grade is based on that rounded value, the same number a student sees on the paper.
Letter grades use the common U.S. 10-point scale: A for 90% and above, B for 80–89, C for 70–79, D for 60–69 and F below 60. With plus/minus turned on, each band is split into thirds: 97 and up is A+, 93–96 is A, 90–92 is A−, then B+ from 87, B from 83, B− from 80, and so on down to D− at 60. Schools set their own scales, so check your syllabus if your cutoffs differ.
The grading chart lists every possible number wrong from zero up to the total, with the number correct, the percentage and the letter. For tests with partial credit, switch on half-point steps. Charts are capped at 1,000 rows to keep the page quick.
How do I calculate a test grade by hand?
Subtract the number wrong from the total to get the number right, divide by the total and multiply by 100. For 40 questions with 6 wrong: 34 ÷ 40 = 0.85, or 85%.
What if questions are worth different points?
Enter total points instead of questions, and enter the points lost (or earned) instead of a count. A 50-point test with 7 points lost scores 43 ÷ 50 = 86%.
Is 89.5% an A or a B?
It depends on rounding. With 0 decimal places, 89.5 rounds to 90% and shows as an A− (or A on a plain scale). With 1 decimal place it stays 89.5%, a B+. Teachers differ, so pick the rounding your teacher uses.
Can I use a different grading scale?
This tool uses the standard 10-point scale. If your school uses another scale (for example 93% for an A), read the percentage and compare it with your school's cutoffs.