Your semester GPA is the grade point average for one term only—fall, spring, summer or whatever your school calls the current session. It is the number that shows how that term went, and it is also the building block of your cumulative GPA. This guide walks through the standard U.S. method with credit hours, a full worked example, and the mistakes that throw people off.
Schools set their own scales and rounding rules. Use this as the common method, then confirm details in your handbook or student portal.
What semester GPA measures
Semester GPA answers one question: across the classes you took this term, what is your average on the grade-point scale, weighted by credit hours?
It does not include earlier terms. Those belong in cumulative GPA. If you average last semester's GPA with this semester's GPA without checking credits, you can get the wrong cumulative number. For the all-terms version, see how to calculate cumulative GPA. The core formula is the same as in our GPA overview; here we focus on one term end to end.
Step 1: List every class that counts this term
Write down:
- Course name (optional, for your notes)
- Final letter grade
- Credit hours (or units)
Skip courses that your school excludes from GPA, such as many pass/fail passes, audits or withdrawals—unless your policy says otherwise. When in doubt, use the official transcript list for the term.
Step 2: Convert each letter to grade points
A common 4.0 scale:
| Letter | Grade points |
|---|---|
| A / 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 treat A+ as 4.3, drop plus/minus values, or use different cutoffs. Match your school's chart. Percentage bands behind letters are covered on our letter grade scale page.
Step 3: Multiply points by credits (quality points)
For each class:
- Quality points = grade points × credit hours
A 3-credit B (3.0) earns 9.0 quality points. A 4-credit A− (3.7) earns 14.8. Credits are why a lab or lecture can weigh more than a 1-credit seminar.
Step 4: Divide totals
- Semester GPA = total quality points ÷ total credit hours
Only count credits that are included in GPA for that term.
Check your weighted grade or what you need on the final — free, in your browser.
Open the free grade calculator →Worked example: one full semester
Suppose this term you finished five classes:
| Class | Grade | Points | Credits | Quality points |
|---|---|---|---|---|
| Chemistry | B+ | 3.3 | 4 | 13.2 |
| Writing | A− | 3.7 | 3 | 11.1 |
| Statistics | B | 3.0 | 3 | 9.0 |
| History | A | 4.0 | 3 | 12.0 |
| Elective | B− | 2.7 | 2 | 5.4 |
| Total | 15 | 50.7 |
Semester GPA = 50.7 ÷ 15 = 3.38 (often shown as 3.38 or rounded per school policy).
Check the arithmetic another way: if every class had been worth the same credits, a simple average of grade points would work. Here credits differ (4, 3, 3, 3, 2), so the weighted total is required. Chemistry's 4 credits pull the average more than the 2-credit elective.
How semester GPA feeds cumulative GPA
Keep both totals from the term—quality points and credits—not only the 3.38 figure.
Example:
- Prior cumulative: 90.0 quality points over 30 credits (GPA 3.00)
- This semester: 50.7 quality points over 15 credits (GPA 3.38)
- New cumulative = (90.0 + 50.7) ÷ (30 + 15) = 140.7 ÷ 45 = 3.13
Notice that averaging 3.00 and 3.38 would give 3.19, which is wrong because the prior record had twice as many credits. Always combine totals.
Weighted grades inside a class vs semester GPA
Students often mix up two different "weights":
- Inside one class: homework 20%, midterm 30%, final 50% → that is a weighted course grade, which becomes the letter you use for GPA.
- Across the semester: credit hours weight each class inside the GPA formula.
First convert the course to a letter (or to grade points if your school allows), then apply credit hours. If you still need a final exam target inside a course, use the final exam guide.