Grade Calculator

Add up your scores across all completed assignments (either as percentages or as points earned ÷ points possible × 100), then either average them (simple mode) or apply the weight for each assignment from your syllabus (weighted mode). The formula for weighted: (Σ percentage × weight) ÷ Σ weight. This calculator does the math automatically.

A weighted grade is when different types of assignments count for different percentages of your final grade. For example, a class might have homework worth 20%, quizzes worth 20%, midterm worth 25%, and final worth 35%. An A on homework matters less than an A on the final because the final has more weight. Most college and many high school classes use weighted grading.

Standard US scale: 93-100% = A, 90-92% = A-, 87-89% = B+, 83-86% = B, 80-82% = B-, 77-79% = C+, 73-76% = C, 70-72% = C-, 67-69% = D+, 65-66% = D, 60-64% = D-, below 60% = F. Some schools use a 10-point scale instead (90-100% = A, 80-89% = B, etc.) — check your school's official chart.

This calculator tells you your CURRENT grade based on completed work. A final grade calculator tells you what score you need on your final exam to reach a target overall grade. Use this calculator first to know where you stand, then use our Final Grade Calculator to plan what you need on the final.

That's normal mid-semester — if you haven't taken your final exam yet, weights from completed work won't total 100%. The calculator handles this by dividing by the sum of weights you've entered. If your weights total 65% (because you've completed 65% of your grade), the calculator gives you the grade you're earning on that 65%. This is the correct way to compute a mid-semester grade.

First, average all assignments within that category (treating them equally). Then enter that category average as a single row with its full category weight. Example: if you have 5 homework assignments averaging 87%, enter 87% with the homework weight (e.g., 20%). Don't enter each homework assignment separately if they share a single category weight.

It depends on context. An A (90%+) is excellent and signals strong mastery. A B (80-89%) is solid and shows competent understanding. A C (70-79%) is passing but suggests room for improvement. A D (60-69%) passes but is borderline. An F (below 60%) is failing. For college admissions and GPA purposes, aim for B's and A's in core courses. Check our High School GPA Calculator to see how your grades translate to GPA.

Extra credit typically adds to your category score, not as a separate category. If you have 87% in homework and earn 5 extra credit points (where homework total was 100 points), your new homework percentage is 92%. Some teachers handle it differently (e.g., adding to total grade after weighting). Check your syllabus or ask your teacher.

Yes — enter the expected score for the future assignment along with its weight. The calculator will show your projected grade once that assignment is graded. You can also enter different "what if" scenarios (e.g., what if I get an 80 on the final vs 90?) to see how much each grade affects your final standing.

A few common reasons: (1) you might be entering weights or scores incorrectly, (2) your teacher might use a different grading scale (e.g., 10-point vs 7-point letter grades), (3) extra credit may be calculated differently, (4) some assignments might be excused or dropped (many teachers drop the lowest score in a category), or (5) the gradebook may include assignments you haven't entered. Compare your input to your gradebook to find the discrepancy.