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Grade Calculator
Calculate your grades and GPA. Enter your scores and weights to find your final grade or what you need on upcoming assignments.
| Assignment | Score | Max | |
|---|---|---|---|
The Grade Calculator helps students track their academic performance and plan for success. Enter your assignment scores and their weights to calculate your current grade, or figure out what score you need on an upcoming test to achieve your target grade. The tool supports weighted grades common in most schools, where different assignments (homework, quizzes, exams) contribute different percentages to your final grade. Take control of your academic progress with clear, instant calculations.
Enter your scores and watch the percentage move
Start with one row. Type the assignment name, the score you got, and the marks it was out of, and the two boxes at the top fill in straight away: your percentage to one decimal place, and the letter grade that goes with it. There is no calculate button, so every edit updates the result as you make it.
Add Assignment gives you another row, named Assignment 2, Assignment 3 and so on, and you can rename any of them to Quiz 1, Midterm, Lab Report or whatever your teacher calls it. The bin icon at the end of a row removes it, though the last remaining row stays put so the table is never empty. Rows with an empty score are ignored, which means you can lay out the whole semester in advance and the grade average calculator only counts the work that has actually been marked.
Max defaults to 100 in every new row, but you can change it to anything. A quiz out of 20, a project out of 50 and an essay out of 15 can all sit in the same table without converting anything to a percentage first.
Straight points versus weighted grades
Leave the weights checkbox off and the tool adds up every score and every maximum, then divides one by the other. Score 18 out of 20, 42 out of 50 and 9 out of 15 and you have 69 points from 85, or 81.2 percent. This is the points-total method most US classes use, and it means a 50-mark project quietly counts more than a 10-mark quiz.
Tick Use weighted grades and a Weight % column appears. Put in the share of the final grade each piece is worth, for example 20 for homework, 30 for quizzes and 50 for the final exam. Each row is converted to its own percentage first, multiplied by its weight, and the results are divided by the total weight you entered. That last part matters: the weights do not have to reach 100. If only homework and quizzes have been marked so far, enter 20 and 30 and the weighted grade calculator treats those 50 points as the whole of the grade, which gives you an honest picture of where you stand right now rather than a score dragged down by an exam you have not sat.
The letter grade scale used here
The letters follow the common US plus and minus scale. 93 and above is an A, 90 to 92.9 is an A-, 87 is a B+, 83 a B, 80 a B-, 77 a C+, 73 a C, 70 a C-, 67 a D+, 63 a D, 60 a D-, and anything under 60 is an F. That answers the sort of question people type into a search box every day, such as what a 73 percent grade is, or what a 75 counts as in letters.
Schools do vary. Some use a straight ten-point scale with no pluses or minuses, some start an A at 90, and UK and Australian schools use different bands entirely. The percentage figure is the one to trust and hand over if your school grades differently to the scale above.
Working out what you need on the final
You can answer a what-if question without any extra tool. Switch the weights on, enter the marks you already have, then add a row for the final exam with its weight and a score you are guessing at. Try 90 out of 100, look at the result, then try 75 and look again. Two or three guesses is usually enough to find the score that lands you on the grade you are aiming at, and it shows you something a single answer does not, which is how much room you actually have.
The same trick works for a midterm that has not happened yet, or for deciding whether a redo on one assignment is worth the evening. Teachers use it the other way round, dropping in a class set of scores to see the class average before entering anything into the gradebook.
Everything stays in the browser
Nothing is uploaded, saved or logged. The calculation runs on your own device, so a teacher can put real student marks in without them leaving the machine, and there is no account to make and nothing to install.
The flip side is that refreshing or closing the tab clears the table. If you are tracking a whole semester, screenshot the result or note the running percentage somewhere before you leave the page. It works the same on a phone, a tablet or a classroom desktop, and the table scrolls sideways on a narrow screen rather than squashing the number fields.
Frequently Asked Questions
How do I calculate my grade percentage?
Add up the points you scored across every assignment, add up the points those assignments were out of, then divide the first number by the second and multiply by 100. Entering each assignment as its own row here does that for you as you type.
What is my grade if I got 20 out of 30?
That is 66.7 percent, which lands as a D on the scale this tool uses. Enter 20 as the score and 30 as the max in a single row to see it.
How do weighted grades work?
Each category is worth a set share of the final grade, so homework might be 20 percent and the final exam 40 percent regardless of how many points each one is out of. Tick Use weighted grades, put that share in the Weight % column, and each row is scaled by its weight instead of by its raw points.
Do my weights have to add up to 100?
No. The total of whatever weights you enter is used as the denominator, so part-way through a term you can enter only the categories that have been graded and still get a fair current grade.
What grade do I need on my final exam?
Turn weights on, enter your marks so far, then add a row for the final with its weight and try different scores in it. The percentage at the top updates instantly, so a couple of guesses will show you the mark you need.
Can I use it for a class with different point values per assignment?
Yes. The Max column is editable on every row, so a quiz out of 20 and an exam out of 200 can sit in the same table and the totals still come out right.
Does this work for college as well as high school?
Yes. The points method and the weighted method are both standard at college level, and the letter scale matches the plus and minus grading most US colleges and high schools use.
Is it free and does it need an account?
It is free with no sign-up, no limit on use and no data leaving your browser.