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Grade Average Calculator: Average Your Grades Across Multiple Courses
You took five classes this semester. You got an A in one, a B+ in two, a B in one, and a C+ in one. What’s your overall grade for the semester? That’s a grade average. The average of your grades across multiple courses, weighted by how many credits each course was worth.
This calculator does exactly that. Enter each course as a row with its grade (either as a percentage or a letter grade) and its credit hours. The calculator figures out your weighted average, the percentage that represents your overall performance across all those courses, plus the letter grade and GPA that average translates to.
What this Grade Average Calculator Does
This is a multi-course grade average calculator. Each row represents one course. You enter the grade you got in that course and how many credits it was worth, and the calculator computes a weighted average across all your courses.
Not for tracking a single course
If you want to track assignments, quizzes, and exams within one class, that’s what the grade calculator does. This calculator is for averaging the final grades from multiple courses.
Not for syllabus categories
If you’re trying to figure out your grade in one course based on category weights like “Homework 20%, Tests 50%,” that’s a weighted grade calculation. This calculator doesn’t do that.
Not for general weighted averages
This calculator is specific to academic grading with credit hours. If you need a general-purpose weighted average calculator for any context, that’s a different tool.
What this Grade Average calculator is for
You have grades from multiple courses: Math 88%, Science B+, English 92%, History B, Art A, and you want to know your overall average for the semester. Each course has a credit value (usually 3 or 4 credits), and courses with more credits count more in the average. That’s what this calculates.
The result is a percentage average, a letter grade, and a GPA value based on that average.
How Credit Weighting Works
The reason the grade average calculator asks for credits is that not all courses count equally toward your overall grade.
A 4-credit course counts more than a 1-credit course. If you got an A in a 1-credit seminar and a C in a 4-credit lecture, your overall average is closer to the C than the A because the lecture course had four times the weight.
The formula is:
Average = Σ(grade × credits) ÷ Σ(credits)
That is the same weighted-average formula from math, applied to courses and credit hours rather than arbitrary weights.
Here is a concrete example. You took three courses:
- Math (3 credits): 88%
- Science (4 credits): 92%
- English (3 credits): 85%
The calculation:
- Math contributes: 88 × 3 = 264
- Science contributes: 92 × 4 = 368
- English contributes: 85 × 3 = 255
- Total: (264 + 368 + 255) = 887
- Total credits: (3 + 4 + 3) = 10
- Average: 887 ÷ 10 = 88.7%
The Science course (92%) had the most credits, so it pulled the average up slightly from what it would have been if all courses counted equally.
If you do not know what “credits” means, it is the unit used to measure how big a course is. A typical college course is 3 or 4 credits. Labs, seminars, and independent studies might be 1 or 2 credits. The more credits a course is worth, the more it contributes to your overall average.
If your school does not use credits, or you are in high school or a different system, enter “1” for every course, and the calculator will give you an unweighted average where all courses count equally.
What the Result Card Tells You
After the calculation, the result card on the right shows four values.
Average %: This is your weighted average percentage across all courses. It is the main output, the percentage that represents your overall performance for the semester.
Letter: The letter grade that corresponds to your average percentage, based on the grading scheme you selected. If your average is 88.7% and you are using the US scheme, that is a B+.
GPA: The GPA value that corresponds to the letter grade, scaled to the GPA scale you set as the default, is 4.0. This is NOT a true cumulative GPA calculation; it is just the GPA equivalent of the average percentage. For proper GPA calculation across semesters, you would use a dedicated GPA calculator.
Total credits: The sum of all the credit hours you entered. Mostly there as a sanity check, if you took five 3-credit courses, this should show 15.
The percentage and letter grade are the most useful outputs for understanding your overall semester performance at a glance.
Grade Average Calculator vs. Other Calculators
Related Calculators
There are several grade-related calculators on this site, and it is not always obvious which one you need. Here is the breakdown.
Use this calculator grade average when:
- You want to average your final grades from multiple courses
- You have course grades Math 88%, Science B+, English 92% and credit hours
- You want to know your overall performance for the semester across all classes
The confusion usually happens between the grade average calculator and the grade calculator. The line is simple: grade calculator = one course with many assignments. Grade average calculator = many courses with one grade each.
If you are mid-semester in one class and trying to figure out your current grade, you want the grade calculator. If you are at the end of the semester with final grades from all your classes and trying to figure out your overall average, you want this one. For the current grade, you want the grade calculator. If you are at the end of the semester with final grades from all your classes and trying to figure out your overall average, you want this one.
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