Final Grade Calculator

How to use this tool

1. Enter current grade. Type your current course grade as a percentage (e.g., 85).
2. Enter final exam weight. Enter how much the final exam counts toward your grade (e.g., 25 for 25%).
3. Enter desired grade. Type your target course grade or choose a common letter-grade target.
4. Read the result. See the minimum score needed, best and worst cases, and projected course grades for several final scores. Use Predict course grade after the exam.

How to use the final grade calculator

Enter three values:

• Current grade: your grade in the course so far, as a percentage.
• Final exam weight: what percentage of your total course grade the final exam counts for (check your syllabus).
• Desired course grade: the final grade you want to achieve in the course.

The calculator tells you exactly what score you need on the final exam, plus the best and worst case outcomes. The displayed minimum rounds up to the next tenth of a point so it does not understate the score needed to reach your target.

Choose a letter target or compare scenarios

If you think in letter grades, choose a target chip and the calculator fills in its percentage. The plus/minus scale uses common U.S. cutoffs such as A at 93%, A- at 90%, and B+ at 87%; the straight-letter scale uses A at 90%, B at 80%, C at 70%, and D at 60%. These are reference scales, not a promise about your school's grading policy. Check the syllabus and edit the target percentage whenever its cutoffs differ.

Open the score scenarios to compare possible final exam results with the course percentage and letter grade each would produce. The row marked “Minimum needed” uses the rounded-up score from the main result. After taking the exam, switch to Predict course grade and enter the score you earned to see the projected overall grade.

The formula explained

Your final course grade is a weighted average:

Final Grade = Current Grade × (1 − w) + Final Exam Score × w

where w = final exam weight as a decimal. Solving for the unknown final exam score:

Required Score = (Desired Grade − Current Grade × (1 − w)) ÷ w

What if the required score is above 100?

This means it's mathematically impossible to reach your desired grade through the final exam alone. Consider talking to your professor about extra credit opportunities, or adjusting your target grade.

What if the required score is negative?

Great news: you've already secured your desired grade. Even scoring 0 on the final exam would still result in a course grade at or above your target. You can take the exam stress-free.

Grade weighting strategies

Understanding how your final grade is weighted can help you optimize your study time:

If your syllabus assigns points instead of a percentage, divide the final's points by the total course points. For example, a 150-point final in a 750-point course is worth 20%. The calculator assumes the current grade covers all non-final work and that the final contributes the stated share of the overall grade.

• Cumulative weighting: every assignment contributes to your grade throughout the term. Missing early work has a compounding effect.
• Extra credit: extra credit points raise your current grade percentage, reducing the score needed on the final. Even a few points can meaningfully lower the required final exam score.
• Grade curving: if the class is curved to a target mean (e.g., mean = 75%), your required score shifts relative to the class distribution, not just your absolute percentage.

GPA impact

Letter grade thresholds have an outsized impact on cumulative GPA near boundary points. The difference between a B (3.0) and a B+ (3.3) in a 3-credit course adds 0.9 quality points. Raising cumulative GPA from 2.5 to 3.0 requires sustained above-average performance: for every credit earned at 3.0, you need roughly one more credit at 4.0 to cancel out the deficit. Check your institution's grade point scale - some use a +/− system while others use whole-letter grades only.