Final Grade Calculator — What Do I Need on My Final?

Find out what you need on your final exam to finish a class with the grade you want. Enter your current grade, how much the final counts toward the course grade, and your goal. The calculator also shows the best and worst course grade still possible and the final score needed for an A, B, C or D.

How to use this tool

1. Enter your current grade in the class as a percentage.
2. Enter the final exam’s weight from the syllabus.
3. Enter the course grade you are aiming for.
4. Read the score you need on the final and the letter-grade table.

Formula

Final score needed = (target − current × (1 − w)) ÷ w

w is the final exam weight as a decimal (25% = 0.25). Everything except the final counts for 1 − w of the course grade, so your current grade contributes current × (1 − w) points. The final has to make up the rest.

Example

With a current grade of 82%, a final worth 25% and a goal of 85%, the graded work already gives 82 × 0.75 = 61.5 points. You need 85 − 61.5 = 23.5 more points from the final, and 23.5 ÷ 0.25 = 94% on the final. A perfect 100% would give 86.5%, and a zero would leave you at 61.5%.