Grade Calculator
Calculate your weighted grade average from multiple assignments. Find out what score you need on your final exam to reach your target grade. Customizable grading scale included.
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Your Grade
B
85.00%
30%
Total Weight
1
Assignments
How Grade Calculators Work
Weighted grade calculation accounts for the importance of each assignment. A final exam worth 40% has 4× the impact of a quiz worth 10%. Use the Weighted Grade tab to calculate your current standing.
The Final Grade Needed tab uses reverse calculation: given your current grade and what you want to achieve, it tells you the minimum score required on the remaining assessment.
Frequently Asked Questions
How do I calculate my weighted grade?▾
For each assignment, calculate the percentage (score ÷ max score × 100), then multiply by its weight. Sum all weighted scores and divide by total weight. Example: 85/100 (30%) + 90/100 (30%) + 75/100 (40%) = (25.5 + 27 + 30) ÷ 100 = 82.5%. This calculator does the math automatically.
What score do I need on my final exam?▾
Use the Final Grade Needed tab. Enter your current grade, desired final grade, and the final exam's weight percentage. The calculator shows the exact score you need. If it says "Impossible," you'd need over 100% on the final to reach your goal.
How is weighted average different from simple average?▾
Simple average treats all assignments equally. Weighted average gives more importance to assignments with higher weight percentages. For example, a final exam worth 40% impacts your grade 4× more than a quiz worth 10%. This calculator supports weighted averages.
What is the standard letter grade scale?▾
Common US scale: A+ (97-100%), A (93-96%), A- (90-92%), B+ (87-89%), B (83-86%), B- (80-82%), C (70-79%), D (60-69%), F (below 60%). This calculator uses this scale by default but lets you customize it.
Can I customize the grading scale?▾
Yes. Click "Edit Grade Scale" below your weighted grade results to adjust the minimum percentage for each letter grade. This is useful if your school uses a different scale.
Do all assignments need to be out of 100 points?▾
No. Enter each assignment's actual score and maximum points. The calculator converts everything to percentages automatically. For example, 8/10 and 80/100 both count as 80%.
What if my weights don't add up to 100%?▾
The calculator displays the total weight used. If it's below 100%, your grade reflects only completed work. If above 100%, some weights may be overstated. Ideally, adjust weights so they sum to 100% for accurate results.