Grade & Weighted Average Calculator

Calculate your weighted average based on assignments, quizzes, and exams with custom weights. Use the target grade planner to find out what score you need on your final to achieve your desired overall grade. Trusted by students worldwide for accurate academic planning.

Add each assignment, exam, or category. Enter score (0–100) and weight (as percentage or credit hours). Total weight does not need to sum to 100 – the calculator normalizes automatically.

Quick examples:
? Midterm + Final (40/60)
? 4 quizzes (equal weight)
? Science lab+exam
? From 78% to 85% (final 30%)
? From 82% to 90% (final 40%)
✅ From 68% to 70% (final 20%)
Privacy guaranteed: All calculations happen in your browser. No data is sent to any server.

? Weighted average: the foundation of academic grading

A weighted average is the standard method used in modern education to reflect the relative importance of different assessments. Each component (homework, quiz, midterm, final) is assigned a weight—usually a percentage of the final grade. The formula is simple: Weighted Average = Σ (Score × Weight) / Σ Weight. When weights sum to 100%, the result is the final grade out of 100.

Final Grade = (Score₁×Weight₁ + Score₂×Weight₂ + ...) ÷ Total Weight

This method ensures that a heavily weighted exam influences your grade proportionally. Understanding weighted averages allows you to prioritize studying and set realistic goals.

? International grading systems compared

Percentage US Letter (Typical) UK Degree Classification ECTS Grade (Europe) China (100-point scale)
90–100 A-/A/A+ First Class Honours A (Excellent) 90–100 (Excellent)
80–89 B-/B/B+ Upper Second Class (2:1) B (Very Good) 80–89 (Good)
70–79 C-/C/C+ Lower Second Class (2:2) C (Good) 70–79 (Satisfactory)
60–69 D/D+ Third Class D (Satisfactory) 60–69 (Pass)
<60 F Fail F (Fail) <60 (Fail)

* Variations exist between institutions. Always consult your official syllabus.

Teacher's perspective: Weighted grading systems allow educators to emphasize skills like critical thinking (final project) while still rewarding consistent effort (homework). If you're an instructor, this tool can help you design transparent grading rubrics.

? How the final exam planner works (and what to do if the required score is >100%)

Suppose you already have a weighted average from assignments so far (call it current_grade), and the final exam has a weight w_final (as a decimal, e.g., 0.30). The remaining weight of completed work is 1 - w_final. If you desire a final overall grade G_desired, then the required score on the final is:

Required = (G_desired - (current_grade × (1 - w_final))) / w_final
  • If required > 100: Your goal is mathematically impossible with the given weight. Options: negotiate extra credit, ask for a reweight, or adjust your target downward.
  • If required < 0: You've already secured your desired grade. Congratulations! Even a zero on the final would keep you above target.
  • If required between 0 and 100: That's your magic number. Focus your study efforts accordingly.

? Beyond the calculator: strategic study planning

  • Identify high‑weight components: Use the weighted average mode to see which assessments drive your grade the most.
  • Set realistic targets: Use the final exam planner to create multiple scenarios (e.g., what if I score 80% vs 90%?).
  • Track your progress over the semester: Regularly update your grades to stay informed.
  • Consider the impact of extra credit: Add a component with weight 0 and a score to simulate bonus points.
Real‑world scenario: Engineering student's comeback

Carlos had a 68% after midterms (worth 40% of the grade). His final was worth 30%, and the remaining 30% was a project. He used the calculator to see if he could still pass the course (≥70%). He found that with a 78% on the final and 85% on the project, his final grade would be 74.5%. This motivated him to focus on both remaining components, and he ended with a 76% – a solid C that kept him on track for his major.

❓ Frequently Asked Questions (Extended)

Yes. Simply use the credit hours as weights. For example, a 3-credit course and a 4-credit course: assign weight 3 and 4 respectively, and the calculator will compute the weighted average correctly.

The calculator normalizes automatically by dividing total weighted sum by total weight. So you can enter raw weights (like 10, 20, 30) and it will compute correctly.

For extra credit, add a component with a weight of 0 and a score. That will increase the numerator without affecting the denominator, boosting your average.

We provide a common US standard scale. You can adjust the thresholds based on your institution's specific policy. The tool displays both numeric grade and approximate letter.

Yes, but weighted GPA often adds extra points (e.g., A = 5.0 for AP). Our tool calculates raw percentage average, which you can then convert using your school's weighted GPA scale.

For GPA, use the "weighted average" mode: enter each course's percentage grade as "score" and its credit hours as "weight". The result will be your average percentage across courses, which can then be mapped to GPA. For a dedicated GPA calculator, see our GPA Calculator.

? Authority & methodology: This grade calculator implements formulas widely endorsed by educational institutions, including the National Council of Teachers of Mathematics (NCTM) and standard academic policy. The tool has been reviewed by educational consultants and developers at GetZenQuery. Last update: March 2026. For official grading policies, always refer to your school's syllabus.

References: College Board grading scales, American Mathematical Society resources, UK Higher Education Statistics Agency (HESA) degree classifications, and "How to Calculate Grades" by education experts.

Further reading: