Education
GPA Calculator
Calculate your grade point average using course grades, credit units and a selectable grading scale.
Calculate your GPA
Enter your courses, credit units and grades. Your GPA is weighted by credit units.
Grade-point systems differ between institutions. This calculator uses the displayed reference scale; check your institution's official grading policy.
Understanding Grade Point Average (GPA)
Grade Point Average (GPA) summarises academic performance by converting course grades into numerical points and calculating their weighted average. The credit units assigned to each course determine how much that course contributes to the overall result. A course with more credit units therefore has a greater influence on GPA than a course with fewer units.
Letter grades and their numerical equivalents
The following is the reference 4.3-point grading scale used in this calculator. It is one grading convention, not a universal institutional standard.
| Letter grade | Grade points | Percentage range |
|---|---|---|
| A+ | 4.3 | 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 | 63–66% |
| D− | 0.7 | 60–62% |
| F | 0.0 | 0–59% |
How GPA is calculated
Each course's grade point is multiplied by its credit units. The resulting weighted points are added together and divided by the total credit units included in the calculation.
GPA = Total weighted grade points ÷ Total GPA credit units.
Worked example
| Course | Credits | Grade | Weighted points |
|---|---|---|---|
| Mathematics | 4 | A+ | 4 × 4.3 = 17.2 |
| Physics | 2 | B | 2 × 3.0 = 6.0 |
| English | 3 | A | 3 × 4.0 = 12.0 |
| Total | 9 | — | 35.2 |
GPA = 35.2 ÷ 9 = 3.91.
Why grading systems differ
Academic grading has developed through different institutional traditions. Earlier schools used class rankings, descriptive categories and numerical marks to distinguish levels of achievement. Letter-based grading became more widely adopted during the nineteenth century, although the meaning assigned to each letter continued to differ between institutions.
Today, some institutions use plus and minus grades, others use whole letter grades, and many operate on different numerical scales. A grade point should therefore always be interpreted using the rules of the institution that awarded it.
Other approaches to academic assessment
Letter grades provide a convenient summary of performance, particularly where achievement can be assessed against clearly defined criteria. However, a single letter cannot always explain the strengths and weaknesses in a student's work. Written feedback, project evaluations, practical demonstrations and portfolios can provide additional information about understanding, creativity and improvement.
These approaches can complement numerical grades. A combination of measurable results and constructive feedback gives students a clearer picture of their academic progress.
Practical ways to improve your GPA
- Attend classes consistently: Participation helps you follow course content, ask questions and keep up with announcements.
- Plan your study time: Organise assignments, tests and revision sessions around a realistic weekly schedule.
- Review material regularly: Revisiting lecture notes throughout the semester can make examination preparation more manageable.
- Seek clarification early: Discuss difficult topics with lecturers, tutors or classmates before knowledge gaps accumulate.
- Monitor your performance: Track assessment results and identify courses that need additional attention.
These habits cannot guarantee a particular GPA, but they can support consistent learning, better preparation and improved academic performance.
How to use this tool
Calculate your grade point average using course grades, credit units and a selectable grading scale. Enter your values, review the options and select the action button to see your result.
Important notes
GPA equals the sum of each course's grade points multiplied by its credit units, divided by the total credit units. Grading scales and rounding rules vary between institutions.