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GPA calculator
Your GPA is the credit-weighted average of your course grade points on the 4.0 scale. Type each course as a letter grade or a percentage with its credit weight and this page works out both the weighted GPA, which is how a transcript normally averages, and the unweighted average. Nothing you type leaves your browser and there is no account.
| Course | Grade | Weight | Remove |
|---|---|---|---|
How it works
- 1
Add a row per course: a name (optional), a grade as a letter (A+, B, C-) or a percentage (0–100), and its credit weight (0.5 for a half course, 1 for a full course, or whatever your school uses).
- 2
Letters map to grade points on the OUAC/OMSAS scale (A+ 4.0, A 3.9, A- 3.7, B+ 3.3 and so on); percentages map through the same table's Scale 3 bands, so a row typed as 78 and a row typed as B+ agree.
- 3
Weighted GPA is the sum of grade points times credit weight, divided by the total credit weight. Unweighted GPA is the plain average of the grade points, one per course.
- 4
Both totals update as you type. Rows with a blank or invalid grade are left out of the totals and flagged, so a half-finished row cannot drag the average down.
Sources
Questions about this tool
Why do my weighted and unweighted GPA differ?
Because your courses do not all carry the same credit weight. A full-year course counts twice as much as a half course in the weighted figure, while the unweighted figure treats every row as one course. If every row has the same weight, the two numbers are identical.
Which letter-to-GPA scale does this use?
The OUAC Undergraduate Grade Conversion Table published for OMSAS, where A+ is 4.0, A is 3.9, A- is 3.7, B+ is 3.3, B is 3.0 and each step down follows the same table. Your own university may publish a slightly different ladder (some give A 4.0 rather than 3.9), so treat the result as an estimate and check your transcript for the official figure.
Can I use this for high-school courses?
Yes, as arithmetic. Ontario secondary schools report percentages rather than GPAs and Ontario universities read those percentages directly, so for an Ontario application you usually do not need a GPA at all. The result is most useful if you are applying somewhere that asks for a 4.0-scale figure.
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