Grade Calculator

Multiply each assignment's score by its weight percentage, then sum the results. Formula: Weighted Grade = Σ(Score × Weight%). For example, if homework (20%) = 90, midterm (30%) = 85, and final (50%) = 88, your weighted grade = (90×0.20) + (85×0.30) + (88×0.50) = 18 + 25.5 + 44 = 87.5%.

Use this formula: Required Final = (Desired Grade - Current Points) ÷ Final Weight. Example: You want 70% in a class where the final is worth 40%. Your current weighted score is 45 points (from 60% of the grade). You need: (70 - 45) ÷ 0.40 = 62.5% on the final to pass with a C.

Standard US conversion: A = 90-100%, B = 80-89%, C = 70-79%, D = 60-69%, F = below 60%. Some schools use different scales or add +/- modifiers (e.g., A- = 90-92%, A = 93-96%, A+ = 97-100%). Always check your syllabus for your professor's specific grading scale.

It depends on the assignment's weight and remaining opportunities. Calculate your maximum possible grade: Current Points + (100% × Remaining Weight). If your max exceeds 90%, an A is still possible. Example: Failed a 10% quiz but have 70% of grade remaining = you can still get 0 + 70 = 70 from that quiz situation, plus whatever you already earned.

Add extra credit points to your total before calculating the percentage. If your class is out of 500 points and you have 425 plus 15 extra credit points: (425 + 15) ÷ 500 = 88%. Some professors cap grades at 100%, while others allow totals over 100%. Check your syllabus for the extra credit policy.