What Grade Do I Need on My Final? How to Calculate It
The semester is almost over and you need to know: what score on the final exam gets you the grade you want? Here is the formula.
The formula is simple: Required Final Score = (Desired Grade - Current Grade x (1 - Final Weight)) / Final Weight. If your current grade is 85%, the final is worth 30%, and you want a 90% in the class: (90 - 85 x 0.70) / 0.30 = (90 - 59.5) / 0.30 = 101.7%. Bad news: you need more than 100%.
Running the Numbers for Every Scenario
This is where a calculator saves you time and stress. Instead of solving the equation repeatedly, enter your current grade and final exam weight once, then see what score you need for every possible letter grade — from A+ down to D. Usually the picture becomes clear: you can realistically aim for a B+ but the A is out of reach, so shift your study time to the class where an A is still achievable.
When the Math Says It Is Impossible
If you need above 100% for your target grade, you have three options: check if the professor offers extra credit, accept the next grade down and redirect study energy to other finals, or ask the professor if any assignments can be re-submitted. Most professors will not change grades, but some allow late homework or test corrections for partial credit.