Cumulative GPA Calculator
Your cumulative average combines all credits earned so far, not just the latest period. Enter your previous average and the new results to see the updated total instantly, correctly weighted by credits.
結果
3.28
Cumulative average
- Total credits
- 75
How this was calculated
- 1Multiply each average by its credits3.2×60 + 3.6×15 = 246
- 2Divide by the total credits÷ 75 = 3.28
公式
Cumulative = (previous × previous credits + new × new credits) ÷ total credits
This is a weighted average where each average counts in proportion to the credits it was earned over. A period with many credits therefore weighs more heavily than one with few, even if the grades themselves look similar.
ステップ解説
- 1Enter your previous average and the number of credits it was earned over.
- 2Enter the new average and the corresponding new credits.
- 3Read off the updated cumulative average and the total number of credits.
計算例
Previous 3.2 over 60 credits, new 3.6 over 15 credits
→ Cumulative average = 3.28.
Previous 3.0 over 90 credits, new 3.8 over 30 credits
→ Cumulative average = 3.20.
Previous 2.8 over 45 credits, new 3.4 over 15 credits
→ Cumulative average = 2.95.
Reference table
| New credits (at 4.0) | Cumulative average |
|---|---|
| 10 | 3.10 |
| 20 | 3.18 |
| 30 | 3.25 |
| 40 | 3.31 |
| 60 | 3.40 |
The more new credits earned at the top grade (4.0), the more the cumulative average rises. Use the calculator above for your own figures.
よくある間違い
- Simply averaging the two figures without accounting for the credits behind each one.
- Using the number of courses as the weight instead of the number of credits.
- Only including the most recent semester and forgetting the credits earned previously.
活用シーン
- Updating your overall average after a new semester or term.
- Estimating in advance how an upcoming semester will affect your average.
- Comparing transcripts when transferring between institutions with different credit systems.
よくある質問
Does this also work with the Dutch 1–10 scale?
Yes, the formula is scale-independent and works with any grading system, as long as you use the same scale consistently.
What if my previous credits are zero?
Then only the new average counts, and the cumulative average equals the new average; that makes sense, since there is no earlier history to weigh in yet.
Does the order of the periods make a difference to the result?
No, a weighted average does not depend on order; only the averages and their associated credits determine the outcome, regardless of which period you enter as "previous" or "new".
How do I estimate my cumulative average before grades are final?
Enter a realistic estimate based on your interim results as the "new average", together with the credits of the current semester, to see a provisional cumulative average.
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