GPA, or grade point average, boils a term of grades down to one number. On the 4.0 scale, each letter grade becomes a number: A is 4.0, B is 3.0, C is 2.0, D is 1.0, and F is 0. Plus and minus grades take steps in between, so A- is 3.7 and B+ is 3.3. Your GPA is the average of those numbers, weighted by credits, so a four-credit course counts more than a one-credit course. This tool does that weighted maths for you from a simple list.
Weighting by credits is what makes GPA fair. Imagine two students who both earn one A and one C. If the first student earned the A in a four-credit course and the C in a one-credit course, the GPA is 16 plus 2, divided by 5 credits, which is 3.60. If the second student earned the A in the one-credit course and the C in the four-credit course, the GPA is 4 plus 8, divided by 5, which is 2.40. Same grades, very different GPA, because the credits differ.
Here is a worked example with the default list. Mathematics is 3 credits at A, worth 12 points. History is 3 credits at B+, worth 9.9 points. Biology is 4 credits at A-, worth 14.8 points. English is 3 credits at B, worth 9 points. The total is 45.7 points over 13 credits, so the GPA is 45.7 divided by 13, which is 3.52. The tool shows that result plus the total credits, so you can check the inputs at a glance.
Entering your courses is simple. Write one course per line, in the form name, credits, grade, such as Mathematics 3 A. Course names can have several words, because the tool reads the last two items on each line as credits and grade. Grades must be letters from A to F, with an optional plus or minus, written in capitals. Lines that do not fit the pattern are skipped, so if your course count looks low, check a line for a missing credit number or a mistyped grade.
Many students confuse weighted and unweighted GPA. Unweighted GPA treats every course equally, whatever its credits, and usually caps at 4.0. Weighted GPA, the kind this tool computes, weights by credits, and some schools add extra weight for honours or advanced courses, pushing the cap above 4.0. This tool uses the standard unweighted 4.0 point values, so if your school weights advanced courses, your official GPA may be higher than the number here.
GPA is used for scholarships, honours lists, graduate admission, and some jobs, but it is not a complete picture of a student. It says nothing about which courses were hard, whether grades improved over time, or what you learned outside class. A rising trend, from 2.8 to 3.6 across terms, often impresses readers more than a flat average. Treat GPA as one signal among many, and pair it with strong work, references, and experience.
The scale itself varies by institution, and that is the main limit of any GPA tool. Some schools do not award plus or minus grades, so B+ simply does not exist there. Some count A+ as 4.0, others as 4.3. Retaken courses may replace the old grade, average with it, or both count, depending on the handbook. Pass and fail courses, withdrawals, and incompletes usually do not enter the GPA at all. Always confirm your school rules before quoting a number.
To use this tool well, copy your grades from your transcript, not from memory, and double-check the credits for each course. Calculate term by term if you want to track progress, then combine all terms for a cumulative GPA. Try what-if lines too: change one expected grade and watch the GPA move, which shows how much each remaining course can still change your average. That view helps you decide where extra study effort pays off most.