Test Grade Calculator
Enter your total questions and how many you got wrong (or right) to instantly see your percentage, letter grade, and pass/fail status.
How Test Grades Are Calculated
A test grade is simply the percentage of questions you answered correctly, mapped onto a letter grade using your institution's grading scale. The math is the same whether you're a student checking a quiz or a teacher prepping a rubric: (correct answers ÷ total questions) × 100.
This calculator goes a step further — it lets you adjust the passing threshold, edit each letter band, and instantly see whether you cleared the bar plus the margin you cleared (or missed) it by.
The Formula
Percentage = (Correct ÷ Total) × 100. If you answered 17 of 20 correctly, your score is 85% — a B in the standard US scale. The number of wrong answers is just Total − Correct.
Passing Score
Most US schools use 60% as the minimum passing grade, but professional certifications often require 70%, 75%, or higher. Adjust the passing threshold to match your exam.
Weighted Tests
Some tests weight each question equally; others assign different point values. This calculator assumes equal weight. For weighted tests, total your earned points and divide by total possible points.
International Scales
Grading scales vary worldwide — UK uses 1st/2:1/2:2/3rd, Germany uses 1.0–5.0, India uses percentages and CGPA. Edit the scale to match your country's system.