Simple, weighted and target grades
A simple average adds your grades and divides by how many there are — right when every mark counts equally. A weighted average is needed when tests, homework and a final exam are worth different shares of the course; each grade is multiplied by its weight before dividing by the total weight. The final-grade mode works backwards: given your current standing and how much the final is worth, it finds the score you need to hit your target.
How the "final grade needed" works
If your final exam is worth a share w of the course and you already hold a grade in the rest, the mark you need is (target − current × (1 − w)) ÷ w. The result can come out above your scale's maximum, which simply means the target isn't reachable from where you stand — or below zero, meaning you've already secured it.
Works with any scale
Because it only averages numbers, this tool fits any grading scale — 0–100, 0–20, 0–10 or the 1–7 scale used in Chile. Just keep every grade and target on the same scale.
Frequently asked questions
How do I do a weighted average?
Use the Weighted tab and put each grade with its weight on its own line, like "90, 30". The tool multiplies each grade by its weight, adds them and divides by the total weight.
What if the score I need is above 100?
It means the target can't be reached with the final's weight alone, even with a perfect score. Lower the target or note that the final isn't worth enough to get there.