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CalculatorGPA & Grade Calculator
Two modes: a credit-weighted GPA across several courses, or a weighted mark for a single course built from graded components. You enter the grade points or scores yourself — this tool does not assume a grading scale on your behalf.
| Course | Grade points | Credits |
|---|
| Component | Weight (%) | Score (%) |
|---|
Credit-weighted GPA
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Weighted and unweighted are genuinely different numbers
A simple average treats every course the same regardless of how much it counts. A credit-weighted GPA multiplies each grade by its credit value first, so a 4-credit course pulls the average harder than a 1-credit one. The gap between the two can be large enough to matter.
| Course | Grade points | Credits |
|---|---|---|
| A | 4.0 | 3 |
| B | 3.0 | 3 |
| C | 4.0 | 1 |
| D | 2.0 | 4 |
Unweighted average: (4.0 + 3.0 + 4.0 + 2.0) ÷ 4 = 3.25. Each grade counts once, regardless of size.
Credit-weighted GPA: (4.0×3 + 3.0×3 + 4.0×1 + 2.0×4) ÷ (3+3+1+4) = 33 ÷ 11 = 3.00. The weak grade in course D counts four times as heavily as the strong grade in course C, because it was worth four times the credits — and it pulls the overall figure down by a quarter of a point compared with the unweighted view.
Neither number is wrong. They answer different questions: the unweighted average asks "how did the courses go on average," the weighted GPA asks "how did the workload-adjusted record come out" — and most institutions that publish an official GPA use the weighted version, because credit hours are meant to represent effort and impact.
Why there is no universal grade-point table here
A− might be 3.7 at one institution and 3.67 at another; some schools have no A+ at 4.0, others cap at 4.3; percentage-to-letter boundaries shift between departments in the same university. Publishing one fixed conversion table would present a local policy as a fixed fact, and it would be wrong for a large share of the people reading it. Enter the grade points your own institution has already assigned — they are the only correct source for that conversion.
Questions people ask
Can I use this for a UK-style degree classification instead of a US GPA?
The weighted-mark mode works for that: enter each module as a component with its credit weight and your percentage mark, and the result is your credit-weighted average percentage, which most UK institutions then map to a classification using their own published boundaries.
What if two components have the same weight?
Enter the same weight value for both — the calculator does not require weights to be unique, only that they reflect how much each component actually counts.
Do the weights in weighted-mark mode need to add up to 100?
No. The calculator normalises by the total weight you enter, so 30/30/40 and 3/3/4 produce the same result. If your weights are meant to sum to 100 and do not, that is worth checking against your course syllabus rather than trusting the tool to guess.
Can I remove a course after adding it?
Yes — each row has its own remove button, and the calculation updates immediately.