How to use this tool
- Enter each assignment, quiz or exam with its score and weight from your syllabus.
- Read your current weighted grade and letter grade.
- Enter your target grade and the final exam's weight to see the score you need.
How weighted grades work
Most US and UK courses don't treat every mark equally. A syllabus might say homework is 20%, quizzes 10%, the midterm 30% and the final 40%. Each score is multiplied by its weight, the results are added up and divided by the total weight entered so far. That gives your grade on the work completed.
The final exam formula
If your current grade is G, the final is worth F (as a decimal) and you want to finish with T, the score you need is (T − G × (1 − F)) ÷ F. With a current 76% and a final worth 40%, reaching 80% needs (80 − 76 × 0.6) ÷ 0.4 = 86%.
Letter grades
The calculator uses a common US scale: 93+ is an A, 90–92 an A−, 87–89 a B+ and so on down to below 60 as an F. Schools differ, so check your own grading policy. For your overall GPA across courses, use the GPA calculator.
Frequently asked questions
How do I calculate my grade with weights?
Multiply each score by its weight, add them up and divide by the total weight.
What do I need on my final to get an A?
Enter 93 (or your school's A cut-off) as the target and the final's weight; the calculator shows the score needed.
What if the weights don't add up to 100?
That's fine for a grade so far. The calculator divides by the weight you've entered.
Is 79.5% a B or a C?
It depends on your school's rounding policy. Many round 79.5 up to 80.