Final Grade Calculator

How to use this final grade calculator

Most course syllabi break your grade into categories, each worth a set percentage of the total. A typical setup might be homework worth 20%, quizzes worth 30% and tests worth 50%. For each category you already have a score for, enter your average percentage in that category and its weight in the table above, then add or remove rows to match your syllabus exactly. Every calculation happens in your own browser; see the privacy policy for exactly what that means for your data.

The calculator multiplies each score by its weight, adds those together, and divides by the total weight you have entered so far. That last step matters: if you have only entered homework and quizzes because the tests have not happened yet, the result is your grade based on the categories entered, not a guess at what the missing categories will be.

• Add as many categories as your syllabus has, in any order
• Leave out a category entirely if you do not have a score for it yet
• Weights are automatically normalized, so 20/30/50 and 2/3/5 give the same result
• Your entries are saved in your browser, so refreshing the page does not clear them
• Print or save the result as a PDF with the button below the calculator

A worked example

Say your syllabus weights homework at 20%, quizzes at 30% and tests at 50%. Your homework average is 95%, your quiz average is 82%, and your test average so far is 78%.

Adding the contribution column gives 19.0 plus 24.6 plus 39.0, which is 82.6. Since the weights already total 100%, that sum is the final grade directly: 82.6%, a B on the common 10-point scale. If your school uses a different scale, see the grading scale chart below for the exact cutoffs.

Now suppose the tests have not happened yet and you only want to check where you stand on homework and quizzes. Enter just those two rows (weights 20 and 30, which the calculator normalizes against their own total of 50 instead of 100): the result is 19.0 plus 24.6, divided by 50 percent of weight, which comes out to 87.2%. That is your current standing in the categories graded so far, not a prediction of your final grade once tests are added in.

What if my weights do not add up to 100

They do not need to. This calculator divides the sum of score times weight by the sum of the weights you actually entered, so partial weight totals are handled automatically. This is useful in two common situations.

First, checking a grade mid-term, before every category has scores yet, as in the example above. Second, some instructors list weights that intentionally do not sum to 100 because of dropped lowest scores or extra credit categories; entering exactly what is on the syllabus still produces the correct weighted average as long as every weight you enter reflects the actual share that category holds relative to the others you have included.

If your syllabus weights genuinely do sum to 100 and you enter all categories, the result is your true final grade for the course.

Where category weights come from

Category weights are set by your instructor and published in the syllabus, usually in a table near the grading policy section. Common labels to look for are "grading breakdown," "grade weights" or "course components." If you cannot find them there, check the learning management system (Canvas, Blackboard, Moodle) under the gradebook or grade weighting settings, since many instructors configure the same weights there for their own gradebook calculation.

If your course uses a points-based system instead of weighted percentages (for example, homework is worth 200 points total and the final exam is worth 300 points out of a 1,000 point course), convert it to a percentage weight first: 200 divided by 1,000 is a 20% weight for homework, and 300 divided by 1,000 is a 30% weight for the final. Do the same for every category, and the calculator above works exactly the same way.

Current grade versus final grade

"Current grade" and "final grade" describe the same calculation at different points in the term: your current grade is the weighted average of whatever has been graded so far, and your final grade is the same calculation once every category, including the final exam, has a score. This calculator produces whichever one applies, depending on which categories you have entered.

If you already know your current grade going into the final exam and want to work out what score you need on that one remaining category to hit a specific final grade, the exam calculator is built for exactly that question: it takes your current grade, the final exam's weight, and your target grade, and solves for the required exam score directly, rather than asking you to enter a score and check the result by trial and error.

Reading your result as a letter grade

The estimated letter grade shown under the result uses the common United States 10-point scale (90 and above is an A, 80 to 89 is a B, and so on). Individual schools sometimes use a different scale, plus and minus grades, or a different cutoff for passing. See the grading scale chart for the exact percentage ranges on several common scales, including plus and minus variants, so you can check your own school's cutoffs against the percentage this calculator gives you.

Common mistakes when calculating a final grade by hand

A weighted grade is easy to get wrong with a calculator and a scrap of paper, mostly for reasons that are not obvious until you have made the mistake once.

Averaging the category percentages instead of weighting them. If homework is 20% and tests are 50% of your grade, adding 95% and 78% and dividing by two gives 86.5%, which treats both categories as equally important. The correct weighted result, from the worked example above, is lower because tests count more than twice as much as homework.

Forgetting a category entirely. A grade that leaves out participation or an extra credit category because the syllabus lists it last, or in a footnote, will be off by exactly that category's weight. Cross-check your list of categories against the syllabus before trusting the result.

Mixing points and percentages. If one category is recorded in raw points (340 out of 400) and another is already a percentage (85%), converting the raw points to a percentage first (340 divided by 400 is 85%) avoids feeding the calculator two numbers on different scales that happen to look similar.

Not accounting for a drop policy. If your instructor drops your lowest quiz score, recalculate your quiz average after removing that score, rather than entering the average of every quiz including the one that will not count.

Rounding and passing thresholds

Most schools round a final percentage to the nearest whole number before assigning a letter grade, so an 89.5% typically becomes 90% and rounds up to an A, while an 89.4% stays a B. A few schools round only at specific thresholds, or do not round at all for pass or fail decisions, so if a grade is close to a cutoff that matters (a passing grade, a scholarship minimum, a prerequisite requirement) check your school's specific rounding policy rather than assuming standard rounding applies.

Passing thresholds also vary by school and by course level: many US high schools and colleges set the passing line at 60% (a D) or 70% (a C), while some programs, especially graduate programs and some nursing or certification courses, require a C or higher, meaning anything below 70 to 73% does not count toward the requirement even though it would pass an ordinary undergraduate class. If a specific grade matters for financial aid, an academic program requirement, or an athletic eligibility rule, verify the exact number with your registrar rather than relying on a general rule of thumb.