Grade Calculator

Calculate final grades and scores

Grade Scale Reference
  • A 90-100%
  • B 80-89%
  • C 70-79%
  • D 60-69%
  • F Below 60%

How the Grade Calculator Works

Our grade calculator offers two powerful modes to help students manage their academic performance. The Current Grade mode lets you enter all your assignments with their scores and point values to calculate your overall grade so far. The Grade Needed mode tells you exactly what score you need on an upcoming exam or assignment to reach your desired final grade.

This tool supports both weighted and unweighted grading systems. In weighted mode, each assignment category (exams, homework, projects, participation) carries a specific percentage of the total grade. The calculator handles all the math so you can focus on studying rather than number-crunching.

Grade Formula

Final Grade = Σ(Score × Weight) / Σ(Weights)

For unweighted calculations, every assignment is treated equally — simply sum all points earned and divide by total possible points. For weighted calculations, multiply each score by its category weight, sum the results, and divide by the sum of all weights. This approach ensures that higher-stakes assessments like exams count more toward your final grade than lower-stakes items like daily quizzes.

When calculating what you need on a final exam, the formula rearranges to solve for the unknown score: Required Score = (Desired Grade − Current Grade × Current Weight) / Final Exam Weight. This helps you set clear study goals and manage your time effectively across courses.

Frequently Asked Questions

To calculate your final grade, multiply each assignment's score by its weight (as a decimal), then sum all the weighted scores. The formula is: Final Grade = Σ(Score × Weight) / Σ(Weights). For example, if your midterm (40% weight) score is 85 and your final (60% weight) score is 90, your final grade = (85×0.4 + 90×0.6) = 34 + 54 = 88%.

Use the formula: Required Score = (Desired Grade − Current Grade × Current Weight) / Final Exam Weight. For example, if you want a 90% overall, your current grade is 85% worth 70% of the total, then you need: (90 − 85×0.7) / 0.3 = (90 − 59.5) / 0.3 = 101.7%. Our Grade Needed calculator does this math instantly for you.

Letter grades represent ranges of percentage scores. In a typical system: A = 90–100%, B = 80–89%, C = 70–79%, D = 60–69%, and F = below 60%. Many schools also use plus/minus modifiers (A-, B+, etc.) for finer distinctions. Each letter grade corresponds to grade points used in GPA calculation: A = 4.0, B = 3.0, C = 2.0, D = 1.0, and F = 0.0.

Weighted grading assigns different importance to different categories of assignments. For example, exams might count for 50% of your grade, homework for 30%, and participation for 20%. This means an exam score has more impact on your final grade than a homework score. Weighted grading reflects the relative importance of each assessment type in determining your overall course performance.

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Feel free to browse if anything stands out.

📱
iPad or Android Tablet for Study View on Amazon
🎧
Noise‑Canceling Over‑Ear Headphones View on Amazon
🪑
Ergonomic Study Desk Chair View on Amazon
💎
Shop your favorite from amazon Shop at Amazon

Affiliate Disclosure: Some links are affiliate links. We may earn a small commission at no cost to you.