How to compute a Grade Point Average (GPA)

1. Enter one course per line

   The "Pairs grade,credits per line" field takes one course per line as `grade,credits` — for example `3.7,3` on one line, `4.0,4` on the next. Up to 2,000 characters total.

2. Grades and credits are numbers

   "Grade" is on whatever scale your school uses (4.0, 5.0, 10, etc.). "Credits" is the weight — usually credit hours or units. Any line that doesn't parse as `number,number` throws "Bad line: <line>".

3. Press Run

   Result is gpa = Σ(grade × credits) / Σ(credits), rounded to 3 decimals. If all your credits are 0, you get "No credits." — divide-by-zero isn't a GPA.

4. Scale matters

   The tool doesn't know your scale — it just averages numbers. A 4.0 system input alongside a 10-point grade will produce nonsense. Stay on one scale per run.