Turn a raw test result into a percentage and a letter grade in one step. Enter the total number of questions or points on the test and how many the student got right, and the calculator gives the percentage score, the fraction correct, and a letter grade on the common US scale. This is the classic teacher grading tool for marking a stack of papers quickly, but it works just as well for students checking a practice test. Because it works in points rather than only whole questions, it handles part-marked answers and weighted questions too. Adjust the numbers and the grade recalculates instantly. The letter bands use the standard ninety, eighty, seventy, sixty cutoffs, and everything is computed locally in your browser.