GPA Calculator for Semester & Cumulative GPA

A GPA calculator calculates grade point average from the grades earned in individual courses. Because courses can carry different numbers of credits, GPA is normally a weighted average: a four-credit course contributes more to the result than a one-credit course.

This calculator uses a standard unweighted 4.0 scale. Select a letter grade for each course, enter the credits, and the calculator converts each grade into grade points before calculating the semester GPA.

If you already have a cumulative GPA, enter your previous GPA and previously earned credits. The calculator combines that earlier record with the current courses to estimate your updated cumulative GPA.

1. Enter previous GPA and credits if you want a cumulative calculation.
2. Enter each course and optionally add its name.
3. Select the letter grade using the calculator’s 4.0 grade-point mapping.
4. Enter credit hours assigned to the course.
5. Review semester GPA as the result updates.
6. Review cumulative GPA when previous GPA and credits are provided.
7. Use the target GPA planner to estimate the future average required to reach a desired cumulative GPA.

Course and previous-GPA entries are saved in your browser’s local storage on the device you are using. Browser storage does not automatically follow you to another device or browser.

The basic GPA formula is:

For each course:

Example: an A worth 4.0 in a 3-credit course contributes 12.0 grade points. If three courses contribute 12.0, 9.9, and 12.0 points over 10 total credits, the GPA is 33.9 ÷ 10 = 3.39.

This is why averaging grade-point values without considering credits can produce the wrong result.

To combine an existing cumulative record with new courses, first estimate the grade points represented by the previous GPA:

Then combine old and new records:

Example: a 3.20 GPA over 60 credits represents 192.0 grade points. A new 15-credit term at 3.60 contributes 54.0 points. Together that is 246.0 points over 75 credits, producing a cumulative GPA of 3.28.

The planner estimates the average GPA needed across a specified number of future credits to reach a desired cumulative GPA.

If the required future GPA is above 4.0, the target cannot be reached within the assumed unweighted 4.0 scale using only the entered future credits. A negative required value means the current record already exceeds the target under the calculator’s assumptions.

This is a planning estimate, not an official academic prediction. Your institution may use different GPA rules.

The calculator uses this example unweighted 4.0 mapping:

Semester GPA measures the courses in a particular term or calculation period.

Cumulative GPA combines the credits included across the academic record. Because it contains more historical credits, one semester can have a smaller effect on cumulative GPA than on semester GPA.

A 4.0 semester GPA does not automatically make a cumulative GPA 4.0. The cumulative result also reflects earlier credits and grades.

A weighted GPA gives additional grade-point value to selected advanced courses under a school’s own rules. AP, IB, honors, dual-enrollment, and other advanced classes may be treated differently.

This GPA calculator intentionally uses an unweighted 4.0 scale. It does not automatically add an AP, IB, or honors bonus because weighting policies differ between institutions.

If you need a weighted GPA, use your school’s published grade-point policy rather than assuming every advanced course receives the same bonus.

Credits determine how strongly a course affects GPA. A 3-credit A contributes 12 grade points on this scale, while a 1-credit A contributes 4. The grade is identical, but the contribution is different because the credit values differ.

Use the credit value assigned to each course by your institution. If your school uses units or another system, verify how those values are treated for GPA purposes.

• Averaging grades without credits: courses with different credits do not have equal weight.
• Mixing weighted and unweighted scales: do not add advanced-course bonuses unless your institution’s policy calls for them.
• Using incorrect previous credits: cumulative GPA depends on the credits represented by the previous GPA.
• Assuming percentage ranges are universal: schools can use different cutoffs.
• Ignoring repeat-course rules: some institutions replace an earlier grade while others count both attempts.
• Including courses that do not count toward GPA: pass/fail, withdrawals, transfer work, and other course types may be handled separately.

There is no single GPA number that universally means “good” or “bad.” Schools, programs, scholarships, graduate programs, and other organizations can use different requirements.

If you are checking eligibility for a scholarship, program, transfer, graduation requirement, or application, use the published requirement from the relevant organization. A general GPA benchmark may not match that organization’s policy.

A calculator can perform the arithmetic correctly while still producing a result that differs from an official transcript when the underlying institutional rules differ.

It does:

• Calculate semester GPA from letter grades and credits.
• Combine previous GPA and credits with current courses for a cumulative estimate.
• Estimate the future average needed for a target cumulative GPA.
• Use an unweighted 4.0 grade-point mapping.

It does not automatically:

• Apply AP, IB, honors, or other weighted-GPA bonuses.
• Know your institution’s transfer, repeat, withdrawal, or grade-replacement rules.
• Replace an official transcript or registrar calculation.