Average Grade Calculator

How to Calculate Your Average Grade in 3 Steps

Whether you need an average calculator for grades in one class or across several tests, this tool handles it. Start by entering each assignment or test name in the first column. The calculator loads three blank rows, but you can add as many as you need by clicking “Add Assignment.”

Type the percentage score you received next to each assignment. If your teacher gave you a letter grade instead of a percentage, check the grading scale table above to find the matching range, or use our test grade calculator for a quick points-to-percentage conversion.

Read your results. The Quick Stats bar shows your running average and letter grade as soon as you enter your first score. Scroll down to the results dashboard for charts, what-if scenarios, and a breakdown of your strongest and weakest assignments. Results update instantly as you type — no button needed.

Average Grade Formula: Worked Example With Percentages and Letters

The average grade formula adds every score together, then divides by the total count. Unlike a weighted grade calculator, every assignment counts the same regardless of type. A quiz score carries just as much weight as a test score when you are averaging grades this way.

In plain English: David’s scores range from 76% to 95%. When you level them all out equally, he lands at 86.4%. His Homework and Lab Report pull the average up, while Quiz 2 pulls it down. This class average calculator formula works for any number of assignments — one score gives you that score as the average, fifty scores gives you the average of all fifty. To find your GPA across multiple classes, use a GPA calculator instead, which factors in credit hours.

Simple vs. Weighted Average: Which Calculation Do You Need?

A simple average treats every assignment equally. A quiz counts the same as a final exam. This works when your teacher grades on total points or gives each assignment equal importance. Many middle school and high school classes use this straightforward approach.

A weighted average assigns different importance to each category. Your syllabus might say Homework is 20% of your grade, Quizzes are 15%, and Exams are 65%. In that case, you need a weighted grade calculator because a 90 on an exam matters far more than a 90 on homework.

How do you know which one you need? Check your syllabus. If it lists percentage weights for each category, you need the weighted version. If your teacher simply averages all scores or uses total points, this average grade calculator gives you the right answer.

Many students check their average after each test to track whether they are trending up or down. If your average is falling, the Impact Analysis section below the calculator shows which specific assignments are pulling your grade down the most. Focus your study time on the assignment types where you score lowest — a 10-point improvement there raises your average more than anywhere else.

Keep in mind that the fewer scores you have, the more each new assignment moves the needle. Early in the semester, one bad quiz can tank your average. By the end, your average stabilizes because each new score is spread across more entries. The What-If Scenarios above show this effect — enter your current scores and see exactly how your next test will shift your overall average grade. If you are tracking performance across multiple classes rather than within one class, a GPA calculator converts letter grades into grade points and factors in credit hours.