Weighted average grade across assignments, quizzes and exams.
Multiply each item's score by its weight, sum those, then divide by the total weight: Weighted Average = Σ(Score × Weight) / Σ(Weight). Enter each assignment/quiz/exam as its own row above.
Once your weights don't yet total 100%, the calculator shows exactly what average you need on the remaining weight to finish at each letter grade — or tells you it's "Not possible" if even a perfect score on the rest can't reach it.
A weighted average only works cleanly when the weights represent the full grade. If they total less than 100%, the calculator treats the shortfall as still-upcoming work and projects what you'd need on it; if they total more than 100%, double-check your syllabus weightings.