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Grade Calculator — Work Out Your Course Grade, Weighted Average & Final Exam Score
🎓 Quick Summary
Wondering where you stand in a class, or exactly what you need on the final to hit the grade you want? This grade calculator hub gives you the answer in seconds. Enter your scores and their weights to see your current grade, or enter your target to find the final exam score that gets you there.
Below the calculators you'll find both grading systems explained, worked examples, and conversion tables for letter grades and GPA — plus the reason calculated grades sometimes disagree with the gradebook.
What Is a Grade Calculator?
A grade calculator works out your course grade from your scores and how much each one counts. You enter what you've earned on assignments, quizzes, and exams, and it returns your overall percentage.
Most calculators handle three related questions. Current grade: what you have right now based on completed work. Final grade: what your course grade will be once the final exam is included. Required score: what you must earn on a remaining assessment to reach a target grade.
The maths behind it is a weighted average. Each score is multiplied by its weight, those products are added together, and the total is divided by the weights used. A calculator does this instantly and handles the awkward cases — like categories with different numbers of assignments — that are easy to get wrong by hand.
Before calculating anything, check which system your class uses — the same scores can produce different grades under each. Your syllabus will say.
Weighted Grading
Points-Based Grading
How it works
Categories worth set percentages
Every point counts equally toward a total
Example
Homework 20%, Midterm 30%, Final 50%
1,000 points available across all work
Your grade is
Weighted average of category averages
Points earned ÷ points possible
A small quiz
Matters only within its category
Matters in proportion to its points
Common in
College courses, AP classes
High school, some college courses
💡 How to tell which you have: If your syllabus lists percentages that add to 100% (like "Homework 20%, Exams 60%, Participation 20%"), it's weighted. If it lists point values per assignment and a course total, it's points-based. The practical difference matters most for small assignments.
How to Calculate Your Current Grade
For weighted grading, follow these four steps. The example uses a class weighted Homework 20%, Quizzes 20%, Midterm 25%, Final 35%.
Find your average in each category. If your homework scores are 88, 92, and 95, your homework average is (88 + 92 + 95) ÷ 3 = 91.67%.
Multiply each average by its weight. Convert the weight to a decimal:
Divide by the weights completed so far. You've completed 65% (0.20 + 0.20 + 0.25), so: 54.83 ÷ 0.65 = 84.36% — a B.
⚠️ The step people miss: Dividing by 65% (not 100%) gives your grade on work completed. If you divide by 100% instead, the ungraded final counts as a zero and your grade looks far worse than it is.
For points-based grading it's simpler: add all points earned, divide by all points possible, multiply by 100. Earning 847 of 1,000 points gives 84.7%.
What Do You Need on the Final Exam?
This is the most common reason students search for a grade calculator, and the formula is straightforward:
Formula
Required final score = (Target grade − Current grade × (1 − Final weight)) ÷ Final weight
Worked example
You currently have 84%, the final is worth 35%, and you want an overall 90%.
Current grade contributes
84 × 0.65 = 54.6 points
Final must supply (for A goal)
90 − 54.6 = 35.4 points
Required score on final (A)
35.4 ÷ 0.35 = 101.1% (out of reach)
Required score on final (B = 80%)
25.4 ÷ 0.35 = 72.6% ✅ Achievable
When the required score exceeds 100%, you have three realistic options: ask whether extra credit is available, check whether the syllabus replaces a low midterm score with the final, or shift your target to the next grade down and protect it. Knowing this early is far better than discovering it after the exam.
Percentage, Letter Grade, and GPA Scales
Percentages convert to letter grades, and letter grades convert to GPA points. The scale below is the most widely used in US schools, but institutions vary — always check your syllabus or student handbook.
Percentage
Letter
GPA Points
97–100%
A+
4.0
93–96%
A
4.0
90–92%
A−
3.7
87–89%
B+
3.3
83–86%
B
3.0
80–82%
B−
2.7
77–79%
C+
2.3
73–76%
C
2.0
70–72%
C−
1.7
67–69%
D+
1.3
63–66%
D
1.0
60–62%
D−
0.7
Below 60%
F
0.0
Percentage grade and GPA are not the same thing. Your percentage is your standing in one course. Your GPA averages letter grades across courses, weighted by credit hours. A single course grade doesn't have a GPA — it has grade points that feed into one.
To calculate GPA: multiply each course's grade points by its credit hours to get quality points, add those, then divide by total credit hours. Three courses — an A (4.0) in 3 credits, a B (3.0) in 4 credits, and a C (2.0) in 3 credits — give (12 + 12 + 6) ÷ 10 = 3.0 GPA.
Weighted GPA applies to AP, IB, and honours courses, where scales often extend to 5.0 so that an A in a harder course outranks an A in a standard one. Unweighted GPA caps at 4.0 regardless of course difficulty. Some institutions treat A+ as 4.3 rather than 4.0, and a few don't use plus/minus grading at all. Use the GPA Calculator with your school's actual scale rather than assuming.
Why Your Calculated Grade May Not Match Your Gradebook
If a calculator gives one number and your course gradebook shows another, one of these is usually the cause:
⚠️ Ungraded work as zeros
Many gradebooks include not-yet-submitted assignments as zeros, dragging the displayed grade down.
⚠️ Dropped scores
Many courses drop the lowest quiz or homework score. If your calculation includes it and the gradebook excludes it, numbers diverge.
⚠️ Extra credit
Extra credit may be added to a category average, to the final percentage, or as bonus points in a total — each method produces a different result.
⚠️ Rounding policy
Some instructors round 89.5% up to an A−; others don't round at all. A grade on a boundary can land either side.
⚠️ Unequal weights within a category
A calculator may average all quizzes equally when the final quiz is actually worth double.
⚠️ End-of-term curves
A curve is usually added after all grades are in, so it won't appear in a mid-semester calculation.
📋 The syllabus is the authority, not the calculator. Use these tools to plan and estimate, then confirm anything consequential with your instructor — particularly near a grade boundary or when a scholarship or prerequisite depends on the outcome.
Frequently Asked Questions
How do I calculate my final grade?
+
Multiply each category average by its weight as a decimal, add the results, then divide by the total weight of completed work. With homework at 91% (weight 0.20) and a midterm at 78% (weight 0.25), that's (18.2 + 19.5) ÷ 0.45 = 83.8%. For points-based courses, divide total points earned by total points possible.
What grade do I need on the final to pass?
+
Subtract your current grade's contribution from your target, then divide by the final's weight. If you have 84%, the final is worth 35%, and you need 70% overall: 84 × 0.65 = 54.6, then 70 − 54.6 = 15.4, then 15.4 ÷ 0.35 = 44%. Anything above that passes.
How do you calculate a weighted grade?
+
Average the scores within each category, multiply each average by that category's weight, add the products, and divide by the weights included. The key point is dividing by completed weight only — otherwise ungraded work is treated as zero and your grade appears artificially low.
What percentage is an A?
+
Typically 90% and above, with 93–96% as a straight A and 90–92% as an A− on plus/minus scales. Institutions differ, and some set the A threshold higher, so confirm against your syllabus.
How do I convert my percentage to GPA?
+
Convert the percentage to a letter grade first, then to grade points on the 4.0 scale — 90–92% is an A− worth 3.7. GPA then averages those points across courses weighted by credit hours, so a single course percentage becomes one input rather than a GPA by itself.
Can I still pass if I fail the final?
+
Often yes, depending on the final's weight and your current standing. With 84% going in and a final worth 35%, scoring just 44% on the exam still leaves you at 70% overall. Run your own numbers through a final grade calculator — but check the syllabus first, since some courses require a minimum final exam score to pass regardless of the average.
🎓 Calculate Your Grade Now
Knowing exactly where you stand turns a stressful guess into a plan you can act on. Work out your current standing, then find what the final needs to deliver.