College GPA Calculator

How to use the college GPA calculator

1. Add one row per course. Choose the letter grade and enter the credit hours from your schedule or transcript. Labs and one-credit seminars count at their own hours.
2. Choose your school’s plus/minus scale. Many registrars give an A− 3.67 and a B+ 3.33 (thirds of a point); others use 3.7 and 3.3 (tenths). Your catalog or registrar’s grading page says which.
3. Mark pass/fail courses as P. They add hours toward graduation but do not change your GPA.
4. Add earlier semesters. Enter your cumulative GPA and GPA hours from your transcript or degree audit. Use GPA hours (sometimes called quality hours or attempted hours), not total earned hours, which can include pass/fail and transfer credit.
5. Set a target. Enter the cumulative GPA you are aiming for and the credit hours you still plan to take to see the average those hours need.

How to calculate college GPA

Worked example from a registrar. The University of Illinois shows a semester with a B+ in a 3-hour course (3.33 × 3 = 9.99 quality points), an A in a 1-hour course (4.00), a C− in a 3-hour course (1.67 × 3 = 5.01), an F in a 5-hour course (0) and an A+ in a 4-hour course (16.00). A pass grade and a credit grade are left out. That is 35 quality points over 16 GPA hours: 35 ÷ 16 = 2.1875.

Illinois prints that GPA as 2.18, not 2.19, because its transcripts truncate to two decimals instead of rounding. The calculator shows a rounded value and the unrounded figure beside it, so you can match either convention.

Why credit hours matter so much

College GPA is a weighted average: each grade counts in proportion to its credit hours. An A in a 1-credit lab moves your GPA far less than a C in a 4-credit lecture. In the Illinois example, the single F in a 5-hour course pulls a semester that includes an A+ and an A below 2.2, because those 5 hours earn zero points while still counting in the denominator.

Rockhurst University’s registrar shows the same weighting with five courses: four 3-hour courses graded B−, B, C and C−, plus a 1-hour course with an A. The quality points add to 8.01 + 9.00 + 6.00 + 5.01 + 4.00 = 32.02 over 13 hours, a 2.46. Taking the A out would barely change it, because that course carries only one hour.

That is also why a strong grade in a heavy course is the fastest way to lift a GPA, and why many students plan to take demanding courses in semesters with a lighter load.

Plus/minus scales and what is left out

Colleges agree that an A is 4.0 and an F is 0, but they differ on plus and minus grades:

The difference is small but can matter near a cutoff such as a 3.5 for honors. The University of Maryland’s example, an A, B−, C+ and F across 13 attempted credits, comes to 29.3 ÷ 13 = 2.253 on its tenths scale.

Some marks are left out of the calculation entirely. The University of Toledo lists a semester where a pass grade adds 3 earned hours but no quality hours: 21 quality points over 6 quality hours, a 3.500. Withdrawals, incompletes and audits are usually excluded the same way. An F is different: it counts its hours with zero points, at Illinois, Maryland and most other schools.

Cumulative GPA and raising it

To combine semesters, add quality points and hours, not GPAs. Averaging a 2.46 and a 3.00 gives 2.73, but if the first semester had 13 hours and the second 15, the correct cumulative is (32.02 + 45) ÷ 28 = 2.75. Rockhurst’s guide sets up exactly this running-total method.

The more hours you have, the harder the cumulative GPA is to move. A student with a 2.8 over 45 hours who wants a 3.0 after 15 more hours needs (3.0 × 60 − 2.8 × 45) ÷ 15 = (180 − 126) ÷ 15 = 3.6 in those 15 hours. Spread over 30 hours, the same goal needs (3.0 × 75 − 126) ÷ 30 = 3.3. The calculator flags targets that would require more than a 4.0, which means they cannot be reached in the hours you entered.

Grade replacement policies can change this math. At schools that replace a repeated course’s grade, retaking a course removes the old quality points and hours instead of adding new ones. Check your catalog before you plan around a repeat.

When the number matters, and which number

Different decisions look at different GPAs. Dean’s list and academic probation are usually based on the semester GPA. Graduation honors, scholarship renewal and good-standing rules usually use the cumulative GPA at your current college. Graduate and professional schools often recalculate a GPA from every college transcript you submit, including transfer and community college courses, using their own scale.

Before you plan around a cutoff, check which GPA it uses, whether it is rounded or truncated, and whether it includes transfer work. A 3.495 that rounds to 3.50 can pass one rule and fail another that truncates to 3.49. The unrounded value in the results helps you see how close you are.

For a scholarship that requires, say, a 3.0 cumulative, set the target to 3.0 and the remaining hours to the credits you will take before the next review. The needed GPA tells you the average you have to hold over that stretch, which you can then translate into the grades you need in each course.

Sources & assumptions

How this calculator gets its numbers. Full method: our methodology.

• GPA = quality points ÷ GPA hours, where quality points = grade points × credit hours for each course.
• Default scale uses thirds (A− 3.67, B+ 3.33, B− 2.67 …); the switch changes it to tenths (A− 3.7, B+ 3.3 …). A+ counts 4.0.
• P (pass) adds earned hours but no GPA hours. An F counts its credit hours with 0 points.
• Cumulative GPA combines your prior GPA × prior GPA hours with this term’s quality points.
• Needed GPA = (target × total hours after the next courses − current quality points) ÷ hours still to take.
• Results are rounded to two decimals for display; some registrars truncate instead.

Sources

1. University of Illinois Urbana-Champaign, Office of the Registrar, Calculate Your GPA. Worked semester: pass and credit grades excluded, an F counts its 5 hours, 35 quality points ÷ 16 GPA hours = 2.1875, printed as 2.18 because the transcript truncates.
2. University of Maryland, Office of the University Registrar, GPA Calculation. A tenths scale (B− 2.7, C+ 2.3) and the example of 29.3 quality points over 13 attempted credits = 2.253, truncated at the thousandths digit.
3. The University of Toledo, Office of the Registrar, Calculating Your GPA. A thirds scale (A− 3.67, B+ 3.33) and a semester where a pass grade adds earned hours but no quality hours: 21 quality points ÷ 6 quality hours = 3.500.
4. Rockhurst University, Registrar, Calculate Your GPA. Five courses totaling 32.02 quality points over 13 hours (2.46), and running totals of quality points and hours for the cumulative GPA.
5. College Board, BigFuture, How to Calculate Your GPA on a 4.0 Scale. The 4.0 conversion (A = 4, B = 3, C = 2, D = 1, F = 0), the worked example of three A’s, a B and a C averaging 3.4, the average U.S. high school GPA of 3.0, and the note that colleges may recalculate GPA their own way.

Last reviewed November 2, 2026. Repeats, transfer credit and grade replacement vary by college; the registrar’s GPA is the official one.