Final Grade Calculator: What Do I Need on My Final?
Score needed on the final, plus weighted grade averages.
Use via API
Score needed on a final exam to reach a target grade, or the weighted average of graded categories (percentages or points like 43/50). Send JSON, get JSON back.
POST https://pithlab.com/api/v1/tools/grade-calculator
curl https://pithlab.com/api/v1/tools/grade-calculator \
-H "Authorization: Bearer $PITHLAB_KEY" \
-H "Content-Type: application/json" \
-d '{"mode":"final","current":82,"target":85,"finalWeight":30}'About the Final Grade Calculator
Find the score you need on your final exam to reach a target grade, or work out a weighted average from category weights and scores such as 42/50.
How to use the Final Grade Calculator
- Choose final exam needed, or weighted average to combine graded categories.
- For the final, enter your current grade, the grade you want and how much the final counts. For an average, enter each category's weight and score as a percentage or as points like 42/50.
- Read the result as you type. Add or remove categories as needed.
Examples
Input
82, 85, 30
Output
You need 92% on the final to finish with 85%
Input
85, 90, 25
Output
You'd need 105% on the final to reach 90%, which is more than full marks
Input
Homework 20% at 95, quizzes 30% at 42/50, midterm 50% at 78
Output
Weighted average 83.2%
Frequently asked questions
How is the required final score calculated?
Your final grade is current grade × (1 − final weight) + final score × final weight. Solving for the final score gives (target − current × (1 − weight)) ÷ weight. With 82% now, a final worth 30% and a target of 85%: (85 − 82 × 0.7) ÷ 0.3 = 92%.
What should I enter as my current grade?
Your grade in the class so far, before the final, as a percentage of the work already graded. Most online gradebooks show this. If yours shows points, divide points earned by points possible and multiply by 100.
What if my weights don't add up to 100%?
The weighted average divides by the total of the weights you entered, so each category counts in proportion to its weight. That's handy mid-term when only some categories have been graded, and the result notes when the total isn't 100%.
Does this work with letter grades?
Enter the percentage that matches the letter grade you want on your school's scale, for example 90 for an A on many US scales. Scales vary, so check your syllabus.