成績與GPA計算機
Easily calculate complex weighted GPAs and target final grades.
Supports foreign grading scales like US, Europe, and more.
關於成績計算機
This tool is a free online calculator that helps you easily compute your Grade Point Average (GPA) or find out the final exam score you need to reach your target grade. It automates the tedious math and provides real-time results instantly.
In addition to simple averages, it supports "Weighted GPA" which factors in the importance (credits) of each course. Furthermore, it has built-in support for various international grading scales including the standard US 4.0 scale, Germany's 1-6 scale, and France's 20-point scale. You can switch between them with a simple dropdown menu, or use the customization feature to define your school's unique grading criteria.
All grade data you enter is processed entirely within your device's browser. Your personal information and sensitive grade data are never sent to or stored on external servers. No account registration is required, making it secure and easy to use.
How to Use
Select Calculation Mode
Choose "Weighted GPA", "Target Grade", or "Simple Average" depending on your needs. For standard university GPA calculations, select "Weighted GPA".
Set the Grading Scale
Select the grading scale that matches your school's system from the dropdown menu (e.g., US 4.0). You can click "Settings" to customize the mapping between letter grades and numerical values.
Enter Grades & Credits
Enter the grade you received and the number of credits for each course. Click "Add Course" to add more rows. The results will be automatically calculated and displayed below.
成績相關術語表
- GPA (Grade Point Average)
- A numerical expression of a student's academic performance. In the US, it typically scales up to 4.0. It is a widely used metric for university admissions, job applications, and scholarships globally.
- Weighted Average
- An average where each data point is assigned a "weight". In grade calculation, the "credits" of each course serve as the weight. Courses with more credits have a greater impact on the final GPA.
- Grading Scale
- The system used to convert a test score (e.g., out of 100) into a grade (e.g., A, B, C or 4.0, 3.0, 2.0). These scales vary significantly by country and university. For example, Germany uses a scale where 1.0 is the highest mark.
- Credits / Credit Hours
- A value representing the required study time or importance of a course. A course that meets more frequently usually grants more credits. When calculating GPA, the grade point is multiplied by the credits, making it a crucial factor.
- Target Grade Calculation
- A reverse-calculation method used to find out what score you need on your remaining exams to achieve a desired final grade, based on your current grades and their weight in the syllabus.
常見問題 (FAQ)
- Q.我輸入的成績資料會被傳送到伺服器嗎？
- 不會。所有的計算都在您的瀏覽器內完成。我們不會將任何個人資料或成績資料傳送或儲存到外部伺服器，您可以安心使用。
- Q.「加權GPA」和「簡單平均」有什麼不同？
- 「簡單平均」是將所有科目的成績相加後除以科目數量。而「加權GPA」會先將各科成績乘上其「學分（Credit）」，學分越高的科目對最終GPA的影響越大。
- Q.為什麼期末目標分數會顯示「無法達成」？
- 根據您目前的平時成績及其佔比，即使您在期末考獲得滿分（100%），在數學上也無法達到您所設定的目標總成績。
- Q.我可以在美國的4.0制度中自訂A+或B-等分數嗎？
- 可以。我們預設提供標準的4.0制度，但您可以點擊「成績制度設定」來新增或修改英文字母與數字的對應（例如設定A- = 3.7），以符合您學校的規範。
- Q.聽說德國的成績制度數字越小越好，這也能算嗎？
- 是的，請選擇「德國 (1-6)」制度。德國教育制度中1.0為最高分，6.0為最低分，本工具完全支援這種反向計算。
- Q.我可以儲存或列印計算結果嗎？
- 基於隱私與安全考量，本工具並未提供儲存功能。若您需要保留計算結果，請使用截圖或自行複製文字留存。
應用情境
The Grade & GPA Calculator can assist you in various academic and professional situations.
Studying Abroad
When applying to universities in the US, UK, or Germany, you are often required to submit your GPA converted to their local grading scale.
How to use: Input your current grades and select the target country's grading scale (e.g., US 4.0) to instantly see your equivalent GPA.
Exam Strategy Planning
Useful when you want to know "How many points do I need to get an A?" or "What's the minimum score to avoid failing?"
How to use: Use the "Target Grade" mode. Enter your midterm scores and their weight, and the tool will calculate the exact score you need on the final exam.
Job Applications & Scholarships
Many companies and scholarship programs require you to accurately list your cumulative GPA on applications.
How to use: Use the "Weighted GPA" mode, refer to your academic transcript, and input your grades and credits for a precise calculation.
Educators & Teachers
Teachers can use this to quickly calculate class averages or convert grades for international transfer students.
How to use: The "Simple Average" mode is great for finding class averages, while the custom settings let you simulate grades based on specific syllabi.
各國成績制度換算參考
Here are the conversion criteria and official sources for the major grading scales built into this tool. You can use these as a reference when customizing your settings.
United States (US 4.0 Scale)
The standard unweighted 4.0 scale widely adopted by institutions like the College Board.
| Letter Grade | Percent | GPA Value |
|---|---|---|
| A | 93 - 100 | 4.0 |
| A- | 90 - 92 | 3.7 |
| B+ | 87 - 89 | 3.3 |
| B | 83 - 86 | 3.0 |
| B- | 80 - 82 | 2.7 |
| C+ | 77 - 79 | 2.3 |
| C | 73 - 76 | 2.0 |
| C- | 70 - 72 | 1.7 |
| D+ | 67 - 69 | 1.3 |
| D | 65 - 66 | 1.0 |
| F | 0 - 64 | 0.0 |
Germany (1-6 Scale)
The standard school grading scale set by the Kultusministerkonferenz (KMK). Lower numbers indicate better performance.
| Grade | Description (German) | Value |
|---|---|---|
| 1 | Sehr gut (Very Good) | 1.0 |
| 2 | Gut (Good) | 2.0 |
| 3 | Befriedigend (Satisfactory) | 3.0 |
| 4 | Ausreichend (Sufficient) | 4.0 |
| 5 | Mangelhaft (Poor) | 5.0 |
| 6 | Ungenügend (Insufficient) | 6.0 |
France (0-20 Scale)
The 20-point scale established by the Ministère de l'Éducation nationale. A score of 10 or higher is a passing grade.
| Score Range | Mention (Honor) | Value |
|---|---|---|
| 16 - 20 | Très bien (Very Good) | 20 |
| 14 - 15.9 | Bien (Good) | 15 |
| 12 - 13.9 | Assez bien (Satisfactory) | 13 |
| 10 - 11.9 | Passable (Sufficient) | 11 |
| 0 - 9.9 | Insuffisant (Fail) | 0 |
Japan (S-F / 100 Scale)
A standard 4.0 conversion scale commonly used by Japanese universities based on MEXT guidelines.
| Grade | Score (100) | GPA Value |
|---|---|---|
| S (AA) | 90 - 100 | 4.0 |
| A | 80 - 89 | 3.0 |
| B | 70 - 79 | 2.0 |
| C | 60 - 69 | 1.0 |
| F (D) | 0 - 59 | 0.0 |
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