Test Score Calculator

Enter correct answers out of total questions to get a percentage, letter grade, and points — or use EZ grader mode to see what any number of wrong answers scores. Runs entirely in your browser.

📖 How it works & FAQ

Mode

Total questions

Correct answers

Penalty per wrong (points, optional)

A minimum %

B minimum %

C minimum %

D minimum %

Turn raw scores into grades instantly

This test score calculator converts correct answers out of total questions into a percentage, a letter grade, and a points score — live, as you type. Everything runs in your browser, so student scores never leave your device. It works two ways: enter the number of correct answers (with an optional penalty for each wrong answer), or flip to EZ grader mode and enter how many questions were missed. EZ mode also builds a full grading chart for the whole test — the classic slide chart teachers keep on their desk, without the plastic wheel.

An editable grading scale

The letter grade comes from a scale you control. By default it uses the common US cutoffs — A at 90%, B at 80%, C at 70%, D at 60%, and F below that — but every threshold is an editable input, so a stricter 93% A or a more forgiving 65% pass takes seconds to set. The wrong-answer penalty is flexible too: leave it at 0 for straight percentage grading, or set a point value like 0.25 or 0.5 for exams that deduct for guessing.

How to use it

Pick a mode: Score if you know how many answers were correct, or EZ grader if you count wrong answers.
Enter the total number of questions on the test or quiz.
Enter correct answers (and an optional per-wrong penalty) or the number wrong.
Adjust the A/B/C/D minimum percentages if your class uses a different scale.
Read the percentage, letter grade, and points in the results row — in EZ mode, scan the chart for every possible score.

FAQ

How is the percentage calculated?: Correct answers divided by total questions, times 100. If a penalty is set, points equal correct answers minus (penalty × wrong answers), and the percentage uses those adjusted points. Scores never drop below zero.
What is an EZ grader?: A quick-reference chart that maps the number of wrong answers to a percentage for a given test length. Enter the total questions and this tool generates the whole chart, highlighting the row you entered.
Can I grade with partial credit?: Yes — the penalty field accepts decimals, and you can enter total points earned as the "correct answers" value with the test's total points as the total.
Does it handle plus and minus grades?: The scale uses five letters for simplicity. For plus/minus systems, use the exact percentage shown and apply your school's finer cutoffs.