Test Grade Calculator

A test grade starts with a simple ratio: correct answers divided by total questions. Multiplying that ratio by 100 converts it to a percentage that is easier to interpret and compare. For example, 42 correct answers on a 50-question test produce 84 percent. This calculator performs that conversion and then maps the percentage to a common plus-minus letter-grade scale and its corresponding four-point value. The scale used here assigns A to scores from 93 through 100, A-minus from 90 through 92.99, B-plus from 87 through 89.99, and B from 83 through 86.99. The boundaries continue through B-minus, the C range, and the D range, with scores below 60 assigned F. GPA points range from 4.0 for A to 0.0 for F. These thresholds follow a widely used convention, but they are not universal. Always compare the result with the grading policy printed in the course syllabus or supplied by the institution. Question-count grading assumes every question has equal value and that there is no partial credit, penalty for guessing, curve, bonus item, or weighted section. If a test uses different point values, calculate earned points divided by available points instead of entering question counts. A teacher may also round final percentages differently. This calculator keeps the underlying percentage precise and displays up to two decimal places, so a result close to a boundary should be checked against the instructor's rounding rules. A test's GPA-point equivalent is a convenient interpretation, not a complete course GPA calculation. Course grades often combine homework, quizzes, projects, participation, and exams with category weights. Official GPA calculations usually apply grade points to entire courses and weight them by credit hours. Do not multiply the displayed points by an exam weight and treat the result as an official GPA without reviewing the institution's method. Students can use the result to verify a posted score, estimate performance before grades are released, or identify how many questions were missed. Teachers and tutors can use the same calculation when building answer keys or discussing progress. The most useful interpretation considers more than a single letter: review which topics caused errors, whether time pressure affected performance, and what study action should follow. Accurate arithmetic provides a reliable starting point, while course rules and learning context determine what the number ultimately means.