GPA Calculator
Calculate semester and cumulative GPA from letter grades, credit hours, and previous cumulative credits.
Last reviewed: June 2026Quick Answer
To calculate your GPA, multiply each course's grade points by its credit hours, add those totals together, then divide by the total credit hours. On the standard 4.0 scale an A is 4.0, B is 3.0, C is 2.0, and D is 1.0. Enter your courses above to get your weighted GPA instantly.
Cumulative GPA Calculator
Enter your existing cumulative GPA and credits to see your new cumulative GPA including this semester.
Grade Point Scale
| Grade | Points | Percent |
|---|---|---|
| A+ | 4.0 | 97-100% |
| A | 4.0 | 93-96% |
| A- | 3.7 | 90-92% |
| B+ | 3.3 | 87-89% |
| B | 3.0 | 83-86% |
| B- | 2.7 | 80-82% |
| C+ | 2.3 | 77-79% |
| C | 2.0 | 73-76% |
| C- | 1.7 | 70-72% |
| D+ | 1.3 | 67-69% |
| D | 1.0 | 60-66% |
| F | 0.0 | Below 60% |
How this GPA calculator works
This GPA calculator estimates semester GPA and cumulative GPA from letter grades and credit hours. For each course, it converts the selected letter grade into grade points, multiplies grade points by course credits to get quality points, adds quality points across courses, and divides by the total attempted credits.
The default 4.0 scale used here is the scale shown in the calculator: A+ and A both count as 4.0, A- is 3.7, B+ is 3.3, B is 3.0, B- is 2.7, C+ is 2.3, C is 2.0, C- is 1.7, D+ is 1.3, D is 1.0, and F is 0.0. If your school uses a different A+ value, D- value, honors weighting, repeat policy, pass/fail rule, or transfer-credit treatment, use your school's official policy for final decisions.
Worked example
Suppose a semester has A+ in Math for 4 credits, A in Science for 3 credits, A- in English for 2 credits, and B+ in History for 1 credit. The quality points are 16.0, 12.0, 7.4, and 3.3, for a total of 38.7 quality points. The total credit load is 10 credits, so semester GPA is 38.7 / 10 = 3.87.
The cumulative section uses the same quality-point method. If your previous cumulative GPA is 3.20 over 45 credits and your new semester adds 14 credits with 48.3 quality points, the estimated cumulative GPA becomes (3.20 x 45 + 48.3) / 59 = 3.26.
What to watch before relying on the result
- Plus/minus scales vary: Some institutions treat A+ as 4.0, some as 4.3 or 4.33, and some do not use A+.
- Repeated courses may be special: Schools may replace, average, or keep both attempts depending on policy.
- Pass/fail courses may be excluded: Many systems count pass/fail credits toward completion but not GPA quality points.
- Weighted GPA is different: High-school honors, AP, IB, or dual-enrollment courses may use a weighted scale not modeled by this page.
- Threshold labels are approximate: Academic standing, Dean's List, scholarship, athletic eligibility, honors, and probation cutoffs are institution-specific.
Sources and further reading
For examples of official GPA policies, see the University of Illinois Registrar guide to grades and grade points and the UCLA General Catalog section on grades, units, and grade points. Use those as examples of why local registrar rules matter; your own school may define scale values and exclusions differently.
Frequently Asked Questions
Quick reference
| Output | Meaning |
|---|---|
| Semester GPA | Total quality points divided by current semester credits. |
| Total credits | Sum of the credit-hour values entered for all current courses. |
| Quality points | Grade points multiplied by course credits, summed across courses. |
| New cumulative GPA | Previous quality points plus semester quality points, divided by combined credits. |