A regular average treats every number the same, but real-world grading, scoring, and evaluation systems rarely work that way. A midterm might count twice as much as a quiz. A final project might be worth more than three homework assignments combined. When items carry different levels of importance, you need a weighted average — not a simple average — to get an accurate result, and calculating it by hand across multiple categories with different weights is where most manual math goes wrong.
Our weighted average calculator lets you enter any number of values along with a weight for each one. It multiplies every value by its corresponding weight, sums the results, and divides appropriately to give you the correct weighted average — handling both percentage-based weights (that sum to 100%) and raw weight values (like credit hours) automatically.
This tool is useful far beyond grades: it works for calculating weighted GPA, blended investment returns, survey scores, product ratings, or any scenario where different data points deserve different amounts of influence on the final number. For students specifically, it's the fastest way to combine grades from categories of different importance into one accurate overall score.