Your grade point average is either already listed on your transcript or something you can calculate yourself in a few minutes with basic math. Most schools display your cumulative GPA at the bottom of your transcript or inside your student portal, but if yours doesn’t, or if you want to double-check the number, the formula is straightforward.
Check Your Transcript or Student Portal First
The fastest way to find your GPA is to look at what your school has already calculated for you. Log into your student portal (the same system where you register for classes or view grades) and look for a section labeled “unofficial transcript,” “academic record,” or “degree audit.” Your cumulative GPA is typically printed at the bottom of the transcript, after all your coursework is listed. If you need an official copy, your registrar’s office can provide one, sometimes for a small fee.
If your transcript doesn’t show a cumulative GPA, or if you want to project what your GPA will be after the current semester, you’ll need to run the calculation yourself.
The Standard 4.0 Scale
Nearly every GPA calculation starts by converting letter grades into numbers on a 4.0 scale. Here’s the standard conversion:
- 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
Some schools don’t use plus/minus grading. In that simplified system, an A is 4.0, a B is 3.0, a C is 2.0, a D is 1.0, and an F is 0.0. Check which scale your school uses before you start calculating.
How to Calculate an Unweighted GPA
An unweighted GPA treats every class the same, regardless of difficulty. This is the version most colleges and universities put on your transcript. If your courses all carry the same number of credits (common in high school, where each class counts as one unit), the math is simple: convert every letter grade to its point value, add them up, and divide by the number of classes.
Say you took five classes this semester and earned an A, a B+, an A-, a C, and a B. That’s 4.0 + 3.3 + 3.7 + 2.0 + 3.0 = 16.0. Divide by 5 classes, and your semester GPA is 3.2.
When Credit Hours Matter
In college, not every course is worth the same number of credits. A lab science might be 4 credit hours while a seminar is 2. Because a 4-credit course represents more of your workload, it should carry more weight in your GPA. That’s where “quality points” (also called grade points) come in.
For each course, multiply the point value of your letter grade by the number of credit hours. A B (3.0) in a 4-credit class gives you 12.0 quality points. An A (4.0) in a 2-credit class gives you 8.0. After doing this for every course, add up all the quality points and divide by the total number of credit hours. The result is your GPA.
Here’s a concrete example with four courses:
- Biology (4 credits), grade A: 4.0 × 4 = 16.0 quality points
- English (3 credits), grade B+: 3.3 × 3 = 9.9 quality points
- History (3 credits), grade B: 3.0 × 3 = 9.0 quality points
- Art (2 credits), grade A-: 3.7 × 2 = 7.4 quality points
Total quality points: 42.3. Total credit hours: 12. GPA: 42.3 ÷ 12 = 3.525.
Calculating a Cumulative GPA
Your cumulative GPA covers everything you’ve taken, not just one semester. The process is identical to the credit-hour method above, but you include every course from every term. Total the quality points across all semesters, total the credit hours across all semesters, and divide. You don’t average your semester GPAs together, because semesters with more credit hours should count more heavily.
If you already know your total quality points and credit hours from previous semesters (often listed on your transcript), you can add this semester’s numbers to those running totals and divide to see your updated cumulative GPA.
Weighted GPA for High School Students
A weighted GPA gives extra points for advanced courses like honors, AP, or IB classes. The specific boost varies by school, but a common approach adds 0.5 points for honors courses and 1.0 point for AP or IB courses. Under this system, an A in a regular class is still 4.0, but an A in an AP class is 5.0, and an A in an honors class is 4.5.
To calculate a weighted GPA, convert each grade to its weighted point value based on the course level, then follow the same process: multiply by credit hours (if applicable), sum the points, and divide by total credits or total number of classes. Weighted GPAs can exceed 4.0, which is why you’ll sometimes see students with a 4.3 or 4.7. Your school’s guidance office can tell you exactly how they weight each course level.
How Retaken Courses Affect Your GPA
If you retake a class, most schools will use only the higher grade when calculating your GPA. Both attempts typically remain visible on your transcript, but the lower grade is excluded from the GPA math. This policy varies, so check with your registrar. Some departments also set minimum grade requirements for major courses, meaning you may need to retake a class even if you technically passed.
Pass/fail courses, withdrawals, and transfer credits each have their own rules. Pass/fail classes usually earn credit without affecting your GPA. Withdrawals (often marked “W”) generally don’t factor into GPA either, though they do appear on your transcript. Transfer credits from another institution may or may not be included in your GPA depending on the receiving school’s policy.
Quick Ways to Check Your Number
If you don’t want to do the math by hand, free online GPA calculators let you plug in your grades and credit hours and get an instant result. Many student portals also include a “what-if” GPA tool that lets you enter hypothetical grades to see how your cumulative GPA would change. These are especially helpful when you’re deciding whether to push for a higher grade in a particular class or figuring out how many A’s you’d need to reach a specific target.
For a quick sanity check without a calculator: if most of your grades are B’s with a few A’s mixed in, your GPA will land somewhere between 3.0 and 3.5. If you’re earning mostly A’s with an occasional B, expect something in the 3.5 to 3.9 range. A single low grade in a high-credit course will pull the number down more than the same grade in a 1-credit elective.