Calculate Your Grades
Quick Grade Calculator
Calculate Weighted Average
This grade calculator is for personal planning and study support only and does not replace your instructor’s official grading or your school’s transcript.
What is a Grade Calculator?
A grade calculator is a free online tool that helps students calculate test scores, course grades, and weighted averages. This test grade calculator instantly converts your points earned into a percentage and letter grade, showing whether you achieved an A, B, C, D, or F.
Our final grade calculator also supports weighted averages, allowing you to calculate your overall course grade when different assignments have different weights. Whether you need to calculate test scores, determine your final grade, or figure out what you need on an upcoming exam, this calculator provides accurate, instant results.
How to Calculate Your Grade
Whether calculating a simple test score or a complex weighted course grade, the math is straightforward. This section breaks down the formulas our calculator uses.
1. Simple Grade Percentage
For a single assignment or test, your grade is calculated using a simple percentage formula:
Grade % = (Points You Earned / Total Possible Points) × 100
Example: If you scored 45 out of 50 on a test:
(45 / 50) × 100 = 0.9 × 100 = 90% (an A grade).
2. Weighted Grade Calculation
Most courses use weighted grades, where different categories (like homework, quizzes, and exams) contribute differently to the final grade. The formula is:
Final Grade = Σ (Category Grade % × Category Weight %)
Example: Let's calculate a final grade with the following weights:
| Category | Your Grade | Weight | Contribution |
|---|---|---|---|
| Homework | 95% | 20% | 95 × 0.20 = 19.0 |
| Quizzes | 80% | 30% | 80 × 0.30 = 24.0 |
| Final Exam | 88% | 50% | 88 × 0.50 = 44.0 |
| Totals | 100% | 87.0 |
Final Grade Calculation: 19.0 + 24.0 + 44.0 = 87% (a B grade).
How to Calculate the Grade Needed on Your Final Exam
One of the most common questions from students is, "What do I need to get on my final to get an A?" This final exam calculator function uses a simple formula to find out.
The "Final Grade Needed" Formula
Required Score = [ Goal Grade - (Current Grade × (1 - Final Weight)) ] / Final Weight
Example:
- • Your current grade in the class is 85%.
- • You want to achieve a final course grade of 90% (an A).
- • Your final exam is worth 30% of your total grade.
Step 1: Calculate the weight of your current grade: 100% - 30% = 70% (or 0.70).
Step 2: Plug the numbers into the formula:
Required Score = [ 90 - (85 × 0.70) ] / 0.30
Step 3: Solve the equation:
[ 90 - 59.5 ] / 0.30 = 30.5 / 0.30 = 101.67%
In this scenario, you would need to score at least 101.67% on your final exam to get an A in the class, which may only be possible if there is extra credit.
Standard University Grading Scale (USA)
Many schools in the United States use a basic letter grade scale where A corresponds to 90–100%, B to 80–89%, C to 70–79%, D to 60–69%, and F to below 60%.[web:55]
| Letter Grade | Percentage | Description |
|---|---|---|
| A | 90% – 100% | Excellent / Outstanding |
| B | 80% – 89% | Good / Above Average |
| C | 70% – 79% | Average / Satisfactory |
| D | 60% – 69% | Poor / Passing |
| F | 0% – 59% | Failing |
Some schools use a +/- system (e.g., A- is 90–92%, B+ is 87–89%), so always confirm the exact grading scale in your syllabus or student handbook.[web:55]
Frequently Asked Questions
How do I calculate my grade percentage?
To calculate grade percentage, divide your earned points by the total possible points, then multiply by 100. Use our grade calculator to get instant results.
What letter grade is 85 percent?
An 85% is typically a B grade on the standard grading scale. Standard scale: A (90–100%), B (80–89%), C (70–79%), D (60–69%), F (below 60%).
How do you calculate weighted grades?
To calculate weighted grades, multiply each grade by its weight percentage, add results, then divide by total weight. Example: Test 1 (80%) weighted 30% + Test 2 (90%) weighted 70% = 87%.