A grade point average (GPA) is the credit-weighted mean of the grade points you earn across all your courses, expressed on a standardized scale where an A equals 4.0, a B equals 3.0, a C equals 2.0, a D equals 1.0, and an F equals 0.0. To get the number, you convert every letter grade to its point value, multiply that value by the course's credit hours, add those products together, and divide by the total number of credit hours attempted. The result is a single figure — usually between 0.0 and 4.0 — that summarizes your academic performance for a semester or your entire degree, which is why GPA is the standard metric used by admissions offices, scholarship committees, and employers in countries including the United States, Canada, and Australia.
If you have a stack of syllabi and a transcript full of A-minuses and B-pluses, doing this math by hand works for one or two courses, but it gets tedious the moment you have five, six, or ten classes with different credit loads. The GPA Calculator handles every conversion and every multiplication for you: pick a letter grade, type the credits, and your weighted GPA and total credits update as you go.
What GPA Actually Means
GPA is a normalized score, not a percentage. It collapses the messy variety of raw scores, grading curves, and professor-specific rubrics into one comparable number so that a B in Organic Chemistry at one university can be measured against a B in Macroeconomics at another. Most US high schools and colleges use the unweighted 4.0 scale described above, while many high schools and some colleges also publish a "weighted" GPA on a 5.0 scale that gives extra points for honors, AP, and IB courses. The weighted GPA in this tool uses the standard 4.0 scale but accounts for credit hours, which is the method the vast majority of colleges cite on transcripts.
Your GPA is calculated separately for each term and cumulatively across all terms. Term GPA reflects one semester's work; cumulative GPA reflects your entire academic record. Both numbers matter — term GPA shows recent performance, while cumulative GPA is the figure admissions and scholarship panels review.
The 4.0 Grade Point Scale
Every GPA calculation starts by converting letter grades to numbers. Here is the standard conversion table used by most US institutions, including plus and minus grades:
| Letter Grade | Grade Points |
|---|---|
| A | 4.0 |
| A− | 3.7 |
| B+ | 3.3 |
| B | 3.0 |
| B− | 2.7 |
| C+ | 2.3 |
| C | 2.0 |
| C− | 1.7 |
| D+ | 1.3 |
| D | 1.0 |
| F | 0.0 |
A few schools also use A+ and treat it as 4.0 (the maximum on a 4.0 scale), while others cap it slightly higher. Check your registrar's policy if you have an A+ on your transcript.
How the GPA Calculator Works
The tool keeps three pieces of information for every course you add: the letter grade, the credit hours, and the grade-point contribution (grade points × credits). It then sums the contributions and divides by total credits. Because the math is repeated each time you change a row, the displayed GPA and total credits update in real time as you type or pick from the dropdowns.
This is the same arithmetic you would do on paper — it just removes the chance of skipping a row, mis-entering a plus or minus, or forgetting to convert a P/F course. If you want to project how a future grade will affect your standing, you can copy your current transcript into the calculator and swap one grade to see the new number instantly.
Calculate Your GPA Step by Step
- Open the GPA Calculator in your browser.
- For the first course row, click the letter-grade dropdown and pick your grade — A, A−, B+, and so on down to F.
- Type the credit hours for that course in the credits box. Common values are 1, 2, 3, or 4.
- Click Add course to create the next row, then repeat for every class on your transcript.
- Read your weighted GPA on the 4.0 scale below the table, and your total credits next to it. Both numbers update as soon as you change a grade or a credit value.
- To start over, remove individual rows or refresh the page to clear all entries.
A Worked Example You Can Recreate
Imagine a single semester with three courses: Calculus (4 credits, A), English Composition (3 credits, B+), and Physical Education (1 credit, A−). Using the 4.0 scale, the contribution of each course to your GPA is:
- Calculus: 4.0 × 4 = 16.0
- English Composition: 3.3 × 3 = 9.9
- Physical Education: 3.7 × 1 = 3.7
Sum of contributions: 16.0 + 9.9 + 3.7 = 29.6. Total credits: 4 + 3 + 1 = 8. Semester GPA = 29.6 ÷ 8 = 3.70. Enter those three rows into the GPA Calculator and the tool will display exactly 3.70 — a quick sanity check whenever you want to verify the numbers on your transcript.
Term GPA vs. Cumulative GPA
A term GPA uses only the courses you took in one semester; a cumulative GPA combines every course you have ever taken at the institution. To calculate a cumulative GPA by hand, list every course across all semesters with its grade and credits, then run the same weighted-average formula. The GPA Calculator treats the entire list of rows you add as one group, so to estimate a cumulative figure you would enter all your courses together. To estimate a single-semester number, enter only that semester's rows.
If you want to know how your current semester will shift your cumulative standing, take your existing cumulative GPA, multiply it by the credits you have already completed, add the contributions from the courses in this calculator, and divide by the new total credits. That intermediate calculation is also worth running through a simple helper like the Average Calculator when you have many semesters.
How to Handle Repeated or Withdrawn Courses
Many universities let you retake a course and replace the old grade in your GPA, while others average the two attempts. Some let you withdraw (W) without penalty, but a W usually does not appear in GPA at all. The GPA Calculator assumes every row counts toward the average; if your school uses replacement, exclude the original attempt and include only the most recent grade. If you are unsure, your registrar's website or transcript legend will spell out the exact policy.
Frequently Confused GPA Concepts
Weighted GPA on a 5.0 scale is different from a credit-weighted GPA on a 4.0 scale. The first gives bonus points for course difficulty; the second just accounts for how many credits each course is worth. This tool uses the credit-weighted 4.0 method, which is what most colleges report. Major GPA is calculated the same way, but only over the courses that count toward your major — pull just those rows into the calculator for a quick estimate.
If you want to convert a percentage score into a letter grade and then into grade points, our guide on how to calculate fraction to percentage in one step shows the conversion chain you need. For tracking your running mean across many assignments, the average, mean, median, and mode guide walks through the related statistics.
Tips for an Accurate GPA Calculation
Double-check your credit values against the official course catalog, not the syllabus — some 3-credit courses have a 4-credit lab attached. Make sure every row is filled; an empty row is treated as a zero by mistake far more often than people realize. If you took a course on a pass/fail basis, decide whether your school counts it in GPA — most do not, and you should leave it out. Finally, round consistently with your institution: some report GPAs to two decimal places, others to three.
What to Do With Your Result
Once you have your GPA, compare it against the thresholds that matter to you: the dean's list cutoff (often 3.5 or 3.7), the minimum for graduation honors (typically 3.5 to 3.8), or the GPA range of programs you are applying to. If the number is below your target, use the calculator to simulate improvements — replace one C with a B and see exactly how many points one grade can buy you. That kind of what-if planning is where a live calculator beats the back of an envelope every time.
For a deeper look, see How to Calculate Your Class Grade From Scores and Weights.