Calculate My Grade: Weighted Grades, Finals, and Class Scores

Searching calculate my grade usually means you want to know your current class grade or what score you need on a final exam to reach a target. Different classes use different grading systems — total points, category weights, or curved scores — so the right formula depends on your class setup.

Use our Grade Calculator to calculate it quickly without manual math.

Understanding Your Grading System

Before calculating, check your syllabus to identify which system your class uses:

1. Total points — all grades are added up and divided by total possible points
2. Weighted categories — assignments, quizzes, tests each have a percentage weight
3. Points with a curve — raw totals adjusted by adding points or scaling to a curve

Most college and high school courses use weighted categories.

Method 1: Points-Based Grade

For total points grading:

Grade = (Points earned ÷ Total points possible) × 100

Example:

You scored the following this semester:

Assignment	Your Score	Possible
Homework 1	18	20
Quiz 1	14	15
Quiz 2	12	15
Midterm	78	100
Project	88	100
Final Exam	82	100

Total earned: 18 + 14 + 12 + 78 + 88 + 82 = 292

Total possible: 20 + 15 + 15 + 100 + 100 + 100 = 350

Grade = 292 ÷ 350 × 100 = 83.4%

Method 2: Weighted Category Grade

Most courses split grades into categories (homework, quizzes, exams) and assign each category a percentage weight. The weights should add to 100%.

Formula:

Final grade = Σ (Category average × Category weight)

Example:

Category	Average	Weight	Weighted Score
Homework	90%	20%	18.0
Quizzes	80%	25%	20.0
Midterm	78%	25%	19.5
Final Exam	85%	30%	25.5

Current grade = 18.0 + 20.0 + 19.5 + 25.5 = 83.0%

Step-by-step for the weighted calculation:

1. Calculate the average for each category (if multiple assignments)
2. Multiply that average by the weight (as a decimal or keep everything in percentages)
3. Add all the weighted values

Method 3: Current Grade Before Final Exam

If the final exam has not happened yet, you can calculate your current grade using only completed work. You need to scale the weights to exclude the final.

Example:

• Homework: 92%, weight 25%
• Quizzes: 85%, weight 20%
• Midterm: 79%, weight 25%
• Final exam: not taken yet, weight 30%

Current grade from completed work:

Completed weights = 25% + 20% + 25% = 70%

Weighted scores = (92 × 0.25) + (85 × 0.20) + (79 × 0.25)

= 23 + 17 + 19.75 = 59.75 out of 70 possible points

As a percent of completed work: 59.75 ÷ 0.70 = 85.4%

This is your standing based on completed work.

What Score Do You Need on the Final?

This is often the most important calculation at the end of a semester.

Formula:

Needed final score = (Target grade − Current weighted grade) ÷ Final exam weight

All values as decimals or all as percentages.

Example:

• Current weighted grade (from completed work only): 59.75 (out of 70 weight points completed)
• Final exam weight: 0.30 (30%)
• Target grade: 80%

Needed final score = (80 − 59.75) ÷ 30 = 20.25 ÷ 30 = 0.675 → 67.5%

You need a 67.5% on the final exam to finish with an 80% in the course.

Another example — targeting an A:

Same setup but targeting 90%:

(90 − 59.75) ÷ 30 = 30.25 ÷ 30 = 100.8%

If the result exceeds 100%, an A is mathematically impossible based on the current standing. You would need to confirm the weighting and your current grades are correct.

Letter Grade Scales

Most schools use one of these standard scales:

Percentage	Letter Grade	GPA Points (4.0 scale)
93–100	A	4.0
90–92	A−	3.7
87–89	B+	3.3
83–86	B	3.0
80–82	B−	2.7
77–79	C+	2.3
73–76	C	2.0
70–72	C−	1.7
67–69	D+	1.3
60–66	D	1.0
Under 60	F	0.0

Some schools use 10-point scales (A = 90–100), while others use different cutoffs. Always check the specific scale your institution uses.

Extra Credit

If extra credit is available, it is typically added to numerator (your earned points) without changing the denominator (total possible points), effectively increasing your percentage.

Example:

You earned 292 out of 350 points = 83.4%

5 points of extra credit: (292 + 5) ÷ 350 = 297 ÷ 350 = 84.9%

Common Grade Calculation Mistakes

Averaging percentages without weights — if your categories have different weights, you cannot simply average the three percentages. A 90% homework average with a 25% weight is not as valuable as a 90% on a final with a 30% weight.

Confusing points and percentages in the same calculation — mixing these two systems creates errors. Convert everything to percentages or everything to raw points first.

Forgetting incomplete assignments — missing work is usually a 0, which drags down your average. Factor those in rather than leaving them out.

Not knowing the cutoffs — some professors round up to the next grade at .5 (e.g., 89.5 → A−); others do not. Check the syllabus.

Using the wrong weight for the final exam — double-check whether the final exam is included in a category weight or is a separate standalone item.

The Bottom Line

To calculate your grade, first identify whether your class uses total points or weighted categories. For weighted classes, multiply each category average by its weight and sum the results. To find what you need on the final exam, use the formula: (target grade − current weighted total) ÷ final exam weight.

Use our Grade Calculator to track current grade and project what you need on upcoming assessments.

How to Calculate: Step-by-Step Guide

1

List graded items

Write down each assignment, quiz, test, project, or exam score.

2

Apply weights

Multiply each category average by its percentage weight.

3

Add weighted scores

Add the weighted values to get your current class grade.