Grade Calculator

Add up the total points you earned across all assignments, then divide by the total points possible, and multiply by 100 to get a percentage. For example, if you scored 85/100 on one assignment and 42/50 on another, your grade is (85+42)/(100+50) × 100 = 84.7%. This is called unweighted or points-based grading, and it treats every point the same regardless of which assignment it came from.

The most common US letter grade scale is: A (93-100), A- (90-92), B+ (87-89), B (83-86), B- (80-82), C+ (77-79), C (73-76), C- (70-72), D+ (67-69), D (63-66), D- (60-62), and F below 60. Some schools use a simpler 10-point scale without plus/minus grades (90+ = A, 80-89 = B, etc.), so always check your syllabus for the exact scale your instructor uses.

Unweighted (points-based) grading sums all points earned and divides by all points possible, so a 5-point quiz counts far less than a 100-point exam simply because it has fewer points. Weighted (category-based) grading instead assigns each category — like homework, quizzes, and exams — a fixed percentage of the final grade regardless of how many points it contains, then combines the category scores using those percentages. Weighted grading is common in college syllabi where exams might count for 50% of the grade even if quizzes have more total points.

A 60% is a D-, not an F, on the standard scale, because the D- range covers 60-62%. Anything below 60% — for example 59% — is an F. This is a common point of confusion because 60% looks like a round cutoff, but on most syllabi the failing threshold is just under 60%, not at it.

Start with your current grade before the final, then use your syllabus to find how much weight the final exam carries (for example 20%). Your overall grade will equal (current grade × the weight of everything else) + (final exam score × the final's weight). To solve for the final exam score you need, rearrange that equation: subtract your current-grade contribution from your target grade, then divide by the final's weight. This calculator shows your grade going into the final; a dedicated 'final grade needed' calculator simply reverses this same weighted formula to solve for the missing score.

Yes. If you leave the weight fields blank or at zero for every row, the calculator sums all points earned and possible for a straightforward unweighted percentage. If you fill in a weight percentage for any row, it switches to weighted mode, calculates each row's individual score percentage, and combines them using your weights so categories like exams or homework count exactly as much as your syllabus specifies.