Weighted Grade Calculator
This weighted grade calculator with final exam shows your current grade and the score you need to reach your target.
Formula & worked example
Formula: Grade = Σ(score × weight) ÷ Σweights. Required final = (target × total weight − points earned) ÷ final weight.
Example: 80% at 30% and 90% at 30%, final worth 40%, target 85%: earned 51 points, required final = (85 − 51) ÷ 0.40 = 85%.
Method & source: Weighted arithmetic mean; required score solves the weighted average for the final. See how we test our calculators.
Next step: try percentage change or study hours.
What Is a Weighted Grade Calculator?
This kind of tool works out your overall grade when some assignments count for more than others. A 20% coursework mark and a 40% final exam do not carry equal weight, so a simple average would mislead you.
This weighted grade calculator with final exam also answers the question every student asks: what do I need to score on the final to reach my target grade?
How Our Weighted Grade Calculator Works
List your graded items with their percentage score and weight, then enter the final exam weight and your target grade.
- Current grade: Your weighted average across the items completed so far.
- Required final score: The mark needed on the final to hit your target overall grade.
- Feasibility: A clear message if the target is out of reach or already secured.
- What-if table: Overall grades for final scores from 50% to 100%.
- Letter grade: A common A–F conversion for reference.
Weights are percentage points of the whole course. If your weights add up to less than 100%, the results are scaled to the weights you entered.
Why Knowing Your Required Score Matters
Going into a final exam without knowing what you need can mean either wasted stress or a nasty surprise.
- Set a realistic study target instead of guessing.
- Decide how to split time between courses.
- See whether a grade boundary is still within reach.
- Understand how much each assignment really matters.
- Plan ahead before a retake or resit is needed.
Using it early in the term turns a vague worry into a specific number you can work towards.
Worked walkthrough: reaching an 80
A course is 30% coursework, 30% midterm and 40% final exam. You scored 78 on the coursework and 84 on the midterm. Your points so far are 78 × 0.30 + 84 × 0.30 = 48.6 out of a possible 60, which is a current grade of 81%. To finish with an overall 80, you need (80 − 48.6) ÷ 0.40 = 78.5% on the final. The what-if table shows that a 70 on the final gives 76.6 overall and a 90 gives 84.6. If the required score were above 100, the tool would tell you the target is out of reach.
Practical tips for weighted grade calculations
- Enter the weights exactly as your syllabus states them. Weights across all items and the final should add up to 100%.
- Leave empty rows blank – they are ignored, so you can list only the work that has been graded.
- If your course uses points rather than percentages, convert each score first: points earned divided by points possible, times 100.
- Your school may round or curve grades differently. Use the result as a planning guide and check the official policy.
- Try more than one target grade – knowing the score needed for a 70, 80 and 90 helps you decide where to focus revision.
Frequently Asked Questions (FAQs)
Multiply each grade by its weight, add the results and divide by the total weight. For 80% at 30% weight and 90% at 30% weight, the weighted average is (24 + 27) ÷ 60 = 85%.
Enter your existing grades and weights, the final exam weight and your target grade. The required score is (target × total weight − points earned) ÷ final weight.
Then the target is not achievable with the weights entered unless extra credit is available. The calculator will say so and suggest a lower target.
Not necessarily. The calculator scales results to the total weight of everything you list, including the final exam.
Convert each score to a percentage first (points earned ÷ points possible × 100) and enter that.
Check your institution’s policy. This calculator uses the weights and scores you enter and a standard weighted average. Your school or university may round, curve or weight grades differently, and its official calculation always takes precedence. See our full disclaimer.