Grade Calculator (Weighted Average)
Weighted grade calculator. Enter scores with weights or points to get your current average and letter grade, even when the weights don't add up to 100.
Current grade
–
| Row | Score | Weight | Share of grade | Adds |
|---|---|---|---|---|
| Total |
Want to know the score you need on the final exam? Use the final grade calculator.
Letter grade scale
Minimum percentage for each letter. Anything below the last one is an F.
How to use the grade calculator
Add one row for each category or assignment in your syllabus, such as homework, quizzes and exams. Give it a score and the weight the syllabus lists. A score can be written several ways:
| You type | It counts as |
|---|---|
92 or 92% |
92% |
45/50 |
90% |
17/20, 18/20, 16/20 |
points added up: 51/60 = 85% |
88; 92; 95 |
percentages averaged: 91.67% |
Leave the score empty for work that has not been graded yet, and its weight is left out until it has a score. If your teacher counts points instead of weights, switch to Points and enter points earned and points possible for each item.
How a weighted average works
Multiply each score by its weight, add the results, and divide by the total of the weights you used. With homework at 92% (weight 20), quizzes at 85% (15) and a midterm at 78% (25), the sum is 92 × 20 + 85 × 15 + 78 × 25 = 5,065. The weights add up to 60, so the current grade is 5,065 ÷ 60 = 84.42%. The table under the result shows each row’s share of the grade and how many percentage points it contributes.
When the weights don’t add up to 100
Until the final exam is graded, the weights you can fill in add up to less than 100. The calculator then reports your grade on the work graded so far: each weight is divided by the graded total, so the 20, 15 and 25 above become 33.33%, 25% and 41.67% of the current grade. This is the usual meaning of a “current grade”. It also shows the points already banked: 50.65 of the 60 graded points count toward the final course grade whatever happens next.
If the weights add up to more than 100, the calculator normalises them the same way and tells you. That usually means a typo, or an extra-credit category that your teacher may handle differently.
Points or weights?
In a points system every point counts the same, so a 200-point project matters twice as much as a 100-point test. In a weighted system a category’s share is fixed by the syllabus, however many points it contains, so ten small quizzes can count as much as one big exam. Using the wrong method can move a grade by several percent, so check which one your class uses.
Letter grades
The default scale is the common US one: A from 90, B from 80, C from 70, D from 60 and F below 60. Turn on + and − grades for A+ at 97, A at 93, A− at 90 and so on down to D− at 60. Schools and teachers differ, so edit the minimums to match your syllabus. Some teachers round 89.5 up to 90 before choosing the letter; tick the rounding option only if yours does.
Frequently asked questions
How do I calculate my grade if the weights don't add up to 100%?
Divide the sum of score × weight by the total of the weights you have scores for. With 60% of the course graded, a weighted sum of 5,065 gives 5,065 ÷ 60 = 84.42%. The calculator does this automatically and says when it has done so.
How do I average several assignments in one category?
Type them all in the score box. Fractions such as 17/20, 18/20 are added up as points, and plain percentages such as 88; 92 are averaged. The row shows the category score it used.
Is an 89.5% an A?
Only if your teacher rounds. On a strict 90% cut-off, 89.5% is a B. Tick the rounding option if your syllabus says grades are rounded to the nearest whole percent.
Are my grades uploaded or saved?
No. The calculation runs in your browser, nothing is sent to a server, and nothing is kept when you close the page.