Convert the grade
Each letter grade is assigned a number on the selected scale. On this site's default scale, 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.
B+ → 3.3 grade pointsFree grade-point planning tool
Know your GPA.
Know the math.
Calculate a credit-weighted term GPA, compare a weighted estimate, and see how this semester could change your cumulative average.
Start with your courses01 / Enter your courses
Build this term's GPA.
Grades are multiplied by course credits, then divided by total credits. Change the example or add your own classes—the result updates instantly.
Grade
Level
Grade
Level
Grade
Level
Grade
Level
Optional cumulative projection
Combine this term with your current record.
Use the same GPA scale your school uses. Leave either field empty to hide the projection.
Course breakdown
Where the number comes from
| Course | Grade | Credits | Grade points | Quality points |
|---|---|---|---|---|
| English Composition | A- | 3 | 3.7 | 11.10 |
| Biology | B+ | 4 | 3.3 | 13.20 |
| World History | A | 3 | 4.0 | 12.00 |
| Statistics | B | 3 | 3.0 | 9.00 |
02 / The calculation
GPA is a weighted average—not a simple average of grades.
Credit hours determine how strongly each class affects the result. The calculator turns each grade into quality points before combining the courses, which is why a four-credit class matters more than a one-credit class.
Apply the credits
Multiply the grade points by the credits for that course. This produces quality points—the contribution the class makes to the numerator of the GPA formula.
3.3 × 4 credits = 13.2Divide the totals
Add quality points from every included class, add the corresponding credits, then divide. Rounding happens only after the complete calculation.
quality points ÷ graded creditsWorked example
Four classes become one average.
The default calculator example includes an A− in a three-credit English course, a B+ in four-credit Biology, an A in three-credit History, and a B in three-credit Statistics.
English3.7 × 3 = 11.10
Biology3.3 × 4 = 13.20
History4.0 × 3 = 12.00
Statistics3.0 × 3 = 9.00
45.30 ÷ 133.48 GPA
WHY BIOLOGY MATTERS MORE
Biology carries four credits, so its B+ contributes more to the final result than the three-credit grades. A plain average of the four grade-point values would miss that difference.
03 / Default scale
The grade values used here.
This is a common rounded 4.0 plus/minus scale. It is not universal. Some schools use 3.67 instead of 3.7, assign 4.33 to an A+, omit plus/minus grades, or use a different scale entirely.
| Letter grade | 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 |
| D− | 0.7 |
| F | 0.0 |
Check your academic catalog
The official grading policy is the best source for grade-point values, included courses, rounding, repeats, and exclusions. If your scale differs, this result will not match your transcript exactly.
Do not enter percentage grades as credits
Credits measure course weight. A grade of 92% does not mean 92 credits. Select the letter grade your instructor or school assigns and enter the class's actual credit value.
Exclude non-GPA coursework when appropriate
Pass/fail, audit, withdrawal, and transfer courses may appear on a record without affecting institutional GPA. Confirm their treatment before adding them as letter-graded classes.
04 / Weighted GPA
Course rigor can change the scale.
High schools sometimes award extra grade points for more demanding courses. The calculator offers a common estimate: +0.5 for Honors and +1.0 for AP or IB. These boosts are intentionally excluded from the unweighted result.
No course-level boost.
Adds 0.5 before credits.
Adds 1.0 before credits.
Weighted GPA has no single national formula.
A school may cap boosts, limit eligible courses, recalculate applications, or report both weighted and unweighted figures. Use the estimate to explore scenarios—not to replace the number your school reports.
05 / Common mistakes
Four ways a reasonable-looking GPA can still be wrong.
- 01
Averaging semester GPAs directly
Two term GPAs should not be averaged 50/50 unless both terms contain exactly the same GPA-bearing credits. Combine their quality points and credits instead.
- 02
Rounding each course too early
Keep the full grade-point value through multiplication and addition. Round only the final GPA so small errors do not accumulate across courses.
- 03
Mixing weighted and unweighted records
A cumulative projection is meaningful only when the existing GPA and new term calculation use compatible scales and weighting rules.
- 04
Assuming every transcript course counts
Some visible courses carry credit but no grade points. Others may be excluded after a repeat or academic-forgiveness decision. Institutional policy decides.
06 / Questions, answered
GPA calculator FAQ
These explanations describe the calculator's model. Your school remains the authority for its official GPA.
How do I calculate GPA from letter grades?
Convert each letter grade into grade points, multiply those points by the course credits, add the resulting quality points, and divide by the total graded credits. This calculator performs those steps using its published default 4.0 scale.
Do classes with more credits affect GPA more?
Yes, when an institution uses credit-weighted GPA. A four-credit course contributes twice as many quality points as a two-credit course with the same grade, so it has twice the effect on the calculated average.
Does an A+ count as more than 4.0?
Not on this calculator's default scale: A and A+ are both represented by the A option and count as 4.0. Some institutions assign an A+ a higher value, while others do not award A+ grades. Always check the scale on your transcript or academic catalog.
What is the difference between weighted and unweighted GPA?
Unweighted GPA uses only the grade-point value. A weighted estimate adds a course-level boost before credits are applied. This site uses +0.5 for Honors and +1.0 for AP or IB as common examples, but schools choose their own weighting policies.
Should pass/fail classes be included?
Usually a pass/fail or credit/no-credit course should be excluded when it does not generate grade points, but institutional rules differ. The calculator has no pass/fail option so those courses are not accidentally treated as ordinary letter grades.
How does the cumulative GPA projection work?
It converts your current cumulative GPA and completed credits into prior quality points, adds the quality points from the entered term, and divides by the combined credits. The current and projected term figures must use compatible GPA scales.
Can this calculator replace my official transcript GPA?
No. An official GPA can include rules for repeated courses, withdrawals, transfer work, academic renewal, remedial courses, and program-specific grading. Use the result for planning and confirm the official number with your school.
Does this site save my grades?
No. Course names, grades, credits, and cumulative-GPA inputs are calculated in your browser and are not submitted to a GPA Calculator account or application database.
Institutional reference
The official scale always wins.
Universities publish calculators and grading policies for their own systems—and explicitly warn that those results may not apply elsewhere. That is why this site publishes its assumptions instead of presenting one GPA scale as universal.