Free grading calculator

Weighted Grade Calculator

Enter each grade category, its weight and the student's average in that category. The calculator shows the overall grade and how many points each category contributes.

Weighted grade calculator

CategoryWeight %Score %

Weights add up to 100%.

Weighted grade

86.9%
B
  • Tests34 pts
  • Quizzes18.4 pts
  • Homework19.5 pts
  • Participation15 pts

How a weighted grade is calculated

In a weighted gradebook each category counts for a fixed share of the final grade, no matter how many assignments are in it. A single test can count more than ten homework assignments because the Tests category carries more weight.

The calculation multiplies each category average by its weight, adds the results, and divides by the total weight:

  1. Multiply each average by its weight85×40 + 92×20 + 78×25 + 100×15
  2. Add the results3400 + 1840 + 1950 + 1500 = 8690
  3. Divide by the total weight8690 ÷ 100 = 86.9%
  4. Read the letter grade86.9% → B
The example loaded in the calculator above: tests 40%, quizzes 20%, homework 25%, participation 15%.

What if the weights don't add up to 100%?

Early in a term some categories have no grades yet. If the final exam is worth 20% but hasn't happened, most gradebooks calculate the current grade from the other 80% and scale it up. This calculator does the same: leave the empty category out (or blank) and the result is divided by the weights you did enter.

That means a student's current grade can change sharply when the first grade in a heavy category is entered. Telling students this at the start of the term avoids a lot of surprised emails after the first big test.

Weighted categories vs total points

In a total points gradebook every assignment simply adds its points to one big total, so a 100-point test counts five times as much as a 20-point quiz. In a weighted gradebook the category weights decide. Neither is wrong, but they can give noticeably different results for the same student, so check which one your school or LMS uses before comparing numbers.

Weighted grade calculator FAQ

How do I calculate a weighted grade?

Multiply each category average by its weight, add the results, and divide by the sum of the weights. For tests 85% at 40%, quizzes 92% at 20%, homework 78% at 25% and participation 100% at 15%, the weighted grade is 86.9%.

Do the weights have to add up to 100?

No. If they don't, the calculator divides by the total of the weights you entered, which is how most gradebooks show a current grade before every category has scores.

Can I use points instead of percentages?

Enter each category as a percentage: divide the points earned in that category by the points possible and multiply by 100. Then use the category's weight as normal.

Is a weighted grade the same as a GPA?

No. A weighted grade combines categories inside one class. A GPA combines final letter grades across several classes, usually on a 4.0 scale.