What Grade Do I Need on My Final? (Simple Formula)
3 min read
It's the question every student asks before finals: what do I actually need to score to keep the grade I want? The math is simple, and it can be a huge relief (or a useful wake-up call).
Here is how to figure out what grade you need on your final.
Step by step
- 1Gather three numbers
Your current grade in the class, the grade you want overall, and how much the final is worth (its weight, e.g. 30% = 0.30).
- 2Apply the formula
Needed = (Goal - Current x (1 - Weight)) / Weight. If your goal is 90, your current grade is 88, and the final is 30%: (90 - 88 x 0.70) / 0.30 = (90 - 61.6) / 0.30 = 94.7.
- 3Read the result
That's the score you need on the final to hit your goal. Above 100 means it's not reachable with the final alone; a low or negative number means you've already secured it.
- 4Use the calculator
Enter your numbers in the Final Grade Calculator to get the exact score you need — and try different target grades instantly.
Tips
- If the required score is over 100, talk to your professor about extra credit or recalibrate your target.
- Double-check the final's weight in your syllabus — it's the number that moves the answer most.
- Knowing you only need a 70 to keep an A can free you to focus on harder classes.
Frequently asked questions
What grade do I need on my final?
Needed = (Goal - Current x (1 - Weight)) / Weight, where Weight is the final's share of your grade as a decimal. The result is the score required on the final.
What if the result is above 100?
Your target isn't reachable with the final alone — you'd need extra credit, or you should set a slightly lower goal.
What if I get a negative number?
You've already locked in your target grade — even a zero on the final would keep it (though don't skip it unless that's allowed).