A GPA calculator helps students compute their grade point average by converting letter grades into numeric values and weighting them by credit hours. Whether you are tracking your semester performance or calculating your cumulative GPA across multiple terms, this free tool handles the math instantly so you can focus on reaching your academic goals.
GPA Scale
Your Courses
GPA Gauge
Letter Grade to GPA Point Mapping
| Letter Grade | 4.0 Scale | 4.3 Scale | Percentage |
|---|---|---|---|
| A+ | 4.0 | 4.3 | 97-100% |
| A | 4.0 | 4.0 | 93-96% |
| A- | 3.7 | 3.7 | 90-92% |
| B+ | 3.3 | 3.3 | 87-89% |
| B | 3.0 | 3.0 | 83-86% |
| B- | 2.7 | 2.7 | 80-82% |
| C+ | 2.3 | 2.3 | 77-79% |
| C | 2.0 | 2.0 | 73-76% |
| C- | 1.7 | 1.7 | 70-72% |
| D+ | 1.3 | 1.3 | 67-69% |
| D | 1.0 | 1.0 | 63-66% |
| D- | 0.7 | 0.7 | 60-62% |
| F | 0.0 | 0.0 | 0-59% |
How to Use the GPA Calculator
Calculating your grade point average can be confusing, especially when different schools use different grading scales. This free GPA calculator removes the guesswork by instantly converting your letter grades and credit hours into an accurate GPA. It supports the US standard 4.0 scale, the 4.3 scale (common in Canada), and percentage-based grading systems.
Step 1: Select Your GPA Scale
Start by choosing the grading scale your school uses. The 4.0 scale is the most common in the United States, where A and A+ both equal 4.0. The 4.3 scale awards A+ a value of 4.3, used by many Canadian and some US universities. The percentage scale converts letter grades into their typical percentage ranges for reference.
Step 2: Add Your Courses
Click the "Add Course" button to create rows for each class you are taking this semester. For each course, enter the course name (optional but helpful for tracking), the number of credit hours, and your letter grade. The calculator starts with a few sample courses so you can see how it works right away.
Step 3: Review Your Results
As you enter or change your courses, the calculator updates instantly. You will see your total credits, total grade points, and your semester GPA. The visual gauge at the bottom provides a color-coded overview of where your GPA falls: green for 3.0 and above, yellow for 2.0 to 3.0, and red for below 2.0.
Step 4: Calculate Cumulative GPA (Optional)
If you want to see your overall GPA across multiple semesters, toggle the "Include previous cumulative GPA" switch. Enter your existing GPA and total credits earned before this semester. The calculator combines your prior record with your current courses to compute your updated cumulative GPA. This is especially useful for tracking academic progress toward graduation requirements, honors eligibility, or graduate school applications.
Understanding the Grade Point Reference Table
The reference table at the bottom shows how each letter grade maps to grade points on every scale. Use this as a quick reference to understand how your grades translate to GPA values. Remember that the GPA formula is straightforward: multiply each course's grade points by its credits, sum them up, and divide by total credits.
Frequently Asked Questions
Is this GPA calculator free to use?
Yes, this GPA calculator is completely free with no ads, no signup, and no limits. All calculations run locally in your browser. You can use it anytime, even offline after the page loads.
Is my data safe when using this calculator?
Absolutely. Everything runs entirely in your web browser using client-side JavaScript. No grades or course data are ever sent to a server. Your academic information stays completely private on your device.
What is the difference between a 4.0 and 4.3 GPA scale?
The standard 4.0 scale caps the highest grade (A or A+) at 4.0 points. The 4.3 scale awards A+ a value of 4.3, which is used by many Canadian universities and some US colleges. Choose the scale that matches your institution.
How do I calculate my cumulative GPA?
Toggle the cumulative mode and enter your existing GPA and total credits from previous semesters. Then add your current semester courses. The calculator combines both to give your overall cumulative GPA using the weighted average formula.
How is GPA calculated?
GPA is calculated by multiplying each course's credit hours by its grade point value, summing all grade points, and dividing by total credit hours. For example, an A (4.0) in a 3-credit course gives 12 grade points. If you also have a B (3.0) in a 4-credit course, your GPA is (12 + 12) / 7 = 3.43.
Can I add or remove courses dynamically?
Yes, click the Add Course button to add as many courses as you need. Each course row has a remove button to delete it. The GPA recalculates automatically whenever you change any course name, credits, or grade.
What letter grades are supported?
The calculator supports all standard US letter grades: A+, A, A-, B+, B, B-, C+, C, C-, D+, D, D-, and F. Each grade maps to a specific point value depending on the selected GPA scale (4.0, 4.3, or percentage).
What does the visual GPA gauge mean?
The gauge provides a color-coded visual indicator of your GPA. Red indicates a GPA below 2.0 (academic warning range), yellow indicates 2.0 to 3.0 (satisfactory), and green indicates 3.0 and above (good to excellent standing).