Final Grade Calculator
What do I need on my final? This free final grade calculator answers it. Enter your current grade, the grade you want and how much the final exam counts. You’ll see the exact score you need, what each letter grade takes, and what any final exam score would do to your grade.
🔒 Nothing you type leaves your browser. No sign-up, no logins.What each grade takes
| Final grade | Score needed on the final |
|---|
What if I score…
Your final grade would be —
Using the final grade calculator
- First, enter your current grade. Take it from your gradebook, or work it out with the grade calculator.
- Next, enter the grade you want. Alternatively, tap one of the quick targets.
- Then enter the final’s weight. You’ll usually find it in the syllabus, for example 20% or 25%.
- Finally, read the result. You see the score you need, a table for each letter, and a slider for any final score.
Final grade calculator formula
Here, w is the final’s weight as a decimal. In other words, your current grade counts for everything except the final, and the final counts for the rest. So the tool solves for the final score that makes both parts add up to your goal. Likewise, the slider uses the reverse: final grade = current × (1 − w) + final score × w.
Final grade calculator worked example
Say your current grade is 84%, you want an 80%, and the final is worth 25%:
To check it: 84 × 0.75 + 68 × 0.25 = 63 + 17 = 80.
By contrast, take 85% now, a 90% goal and a final worth 20%. Then you’d need (90 − 85 × 0.8) ÷ 0.2 = 110%, which is out of reach without extra credit.
What do I need on my final?
You need just three numbers: your current grade, the grade you want, and the final’s weight. After that, the calculator does the rest. It also tells you whether the goal is doable, tough or out of reach.
Final grade calculator with exam weight
The weight matters a lot. For example, at 84% now and aiming for 80%, a final worth 10% needs only 44%. In comparison, a 25% final needs 68%, and a 50% final needs 76%. So check your syllabus first. If the final is one category among several, use its share of the whole course grade.
Final grade calculator results for each letter
The table in the tool shows the score needed for an A, B, C and D at once. In addition, it marks any grade that is already secured or no longer possible.
New school, new rules
Families who move states mid-year often find finals weighted differently. For instance, one school may count the final as 20% of the semester. Meanwhile, another may treat it as a separate grade. So ask the teacher how the final counts before relying on any number. For more on how letter grades feed into a GPA, see College Board’s GPA guide.
Summary
How final grades work: final grade = current grade × (1 − w) + final exam score × w.
What you need: score needed = (target − current × (1 − w)) ÷ w.
Reading the result: above 100% means out of reach, while 0% or less means already secured.
Final grade calculator FAQ
How do I calculate what I need on my final?
Use score needed = (target − current × (1 − w)) ÷ w, where w is the final’s weight as a decimal. For example, with 84% now, an 80% target and a 25% final: (80 − 63) ÷ 0.25 = 68%.
What if the score I need is over 100%?
In that case, you can’t reach the target on the final alone. Instead, check the table for the best grade still possible, or ask about extra credit.
How much does a final exam affect my grade?
Exactly its weight. For example, a final worth 20% can move your grade by up to 20 percentage points in total.
Where do I find my final exam weight?
Usually it’s in the course syllabus or grading policy. Otherwise, ask your teacher or professor.
Does this final grade calculator save my grades?
No. Everything runs in your browser, so nothing is sent or stored. Also, it never asks for a school portal login.