How is a weighted grade calculated?

Multiply your score in each category by that category’s weight, add those products together, and divide by the total weight. For example homework at 90% (weight 20) and a final at 80% (weight 50) give (90×20 + 80×50) divided by 70 if those are the only graded parts. Weighting is why doing well on a heavily weighted final matters more than the same score on light homework.

What happens if my weights do not add up to 100%?

The calculator still works and shows your grade across the categories you have entered, treating it as the grade so far. It flags that the weights are short of 100% so you know some of the course is not graded yet. Once every category is in and the weights total 100%, the figure becomes your final overall grade.

Can I use it before every assignment is graded?

Yes, and that is the point. Enter only the categories that have been marked and you get an accurate picture of where you stand right now, rather than waiting for the whole course. As more marks come in, add them and the grade updates.

Is anything I type sent to a server?

No. Everything runs inside your browser, so the work you do here stays on your own device and nothing is uploaded. There is no sign-up and no limit on how many times you use it, and once the page has loaded it keeps working with no connection.

Grade Calculator

Find your current grade in a class by entering each category, your score in it and how much it is worth. The weighted average updates as you go, and it warns you if the weights do not add up to 100%. Free, in your browser, no sign-up.

Free, every tool
No sign-up, no app
Private in your browser
Instant results
Works offline after first load

Weighted by category

Category	Score %	Weight %

Overall grade

87.90%

How to use it

1
List your categories

Add a row for each part of the grade, such as homework, quizzes, the midterm and the final.
2
Enter scores and weights

Put in your percentage in each category and the weight it carries toward the final grade.
3
Read your grade

The weighted total appears instantly. If your weights do not sum to 100%, you get the grade so far plus a heads-up.

When it comes in handy

Where you stand now

See your current grade partway through a course, using only the categories that have been marked.

Checking the syllabus maths

Confirm a category breakdown adds up to 100% and produces the grade you expect.

Targeting a letter

Adjust a score to see what a category needs for the overall grade to cross into the next letter.

Instant, exact & 100% in your browser

The conversion runs right here in your browser using exact, standard factors. Nothing you type is sent to a server, there is no sign-up and no limit, and once the page has loaded it keeps working even with no connection.

Frequently asked questions

How is a weighted grade calculated?: Multiply your score in each category by that category’s weight, add those products together, and divide by the total weight. For example homework at 90% (weight 20) and a final at 80% (weight 50) give (90×20 + 80×50) divided by 70 if those are the only graded parts. Weighting is why doing well on a heavily weighted final matters more than the same score on light homework.
What happens if my weights do not add up to 100%?: The calculator still works and shows your grade across the categories you have entered, treating it as the grade so far. It flags that the weights are short of 100% so you know some of the course is not graded yet. Once every category is in and the weights total 100%, the figure becomes your final overall grade.
Can I use it before every assignment is graded?: Yes, and that is the point. Enter only the categories that have been marked and you get an accurate picture of where you stand right now, rather than waiting for the whole course. As more marks come in, add them and the grade updates.
Is anything I type sent to a server?: No. Everything runs inside your browser, so the work you do here stays on your own device and nothing is uploaded. There is no sign-up and no limit on how many times you use it, and once the page has loaded it keeps working with no connection.