GPA 计算器指南：平均绩点是如何计算的
GPA (Grade Point Average) compresses your entire academic record into a single number on a 4.0 scale. It's used for scholarships, honors, grad-school admissions, and even some job applications. This guide explains how it's computed and why credit weighting matters.
Letter Grades on the 4.0 Scale
Pluses and minuses shift by 0.3: A− = 3.7, B+ = 3.3, B− = 2.7, etc.
The GPA Formula
- grade point — numeric value of the letter grade
- credit hours — weight of the course (usually 3 or 4)
Courses with more credits count more heavily — an A in a 4-credit course raises your GPA more than an A in a 2-credit course.
Example: 3-credit A (4.0), 4-credit B (3.0), 3-credit C (2.0). GPA = [(4×3) + (3×4) + (2×3)] ÷ (3+4+3) = (12 + 12 + 6) ÷ 10 = 30 ÷ 10 = 3.0.
Weighted vs. Unweighted GPA
- Unweighted — capped at 4.0; an A in AP or honors counts the same as a regular A.
- Weighted — adds bonus points for harder classes (AP/IB): an A might be 5.0, pushing GPA above 4.0.
Colleges recalculate GPA their own way, often ignoring weighted bonuses or PE/arts classes. Always check each school's methodology.
Common GPA Mistakes
- Averaging GPAs instead of recalculating. A 3.5 in 3 credits + 3.0 in 4 credits is NOT 3.25 — it's (3.5×3 + 3.0×4) ÷ 7 = 3.21.
- Forgetting +/- shifts. A B+ (3.3) and a B− (2.7) differ by 0.6, not 0.
- Including pass/fail courses. These usually carry no grade points and shouldn't be in the denominator.
Put It Into Practice
Add each course with its grade and credits to see your semester or cumulative GPA instantly.
GPA（Grade Point Average，平均绩点）将你的整个学业成绩压缩为一个 4.0 scale 上的数字。它用于奖学金、荣誉称号、研究生院录取，甚至一些求职申请。本指南将解释 GPA 的计算方法以及为何 credit hours（学分权重）至关重要。
4.0 Scale 上的 letter grade（字母成绩）
加号和减号各偏移 0.3：A− = 3.7, B+ = 3.3, B− = 2.7 等。
GPA 公式
- grade point — letter grade 的数值
- credit hours — 课程的权重（通常为 3 或 4）
学分越多的课程权重越大——4 学分课程的 A 比 2 学分课程的 A 更能提高你的 GPA。
示例：3 学分 A（4.0）、4 学分 B（3.0）、3 学分 C（2.0）。GPA = [(4×3) + (3×4) + (2×3)] ÷ (3+4+3) = (12 + 12 + 6) ÷ 10 = 30 ÷ 10 = 3.0。
Weighted vs. Unweighted GPA（加权与未加权 GPA）
- Unweighted（未加权） — 上限为 4.0；AP 或荣誉课程的 A 与普通 A 分值相同。
- Weighted（加权） — 为较难的课程（AP/IB）添加加分：A 可能为 5.0，使 GPA 超过 4.0。
大学会以自己的方式重新计算 GPA，通常会忽略加权加分或体育/艺术类课程。务必查看每所学校的具体计算方法。
常见 GPA 计算错误
- 直接平均 GPA 而非重新计算。 3 学分的 3.5 + 4 学分的 3.0 不等于 3.25——正确结果是 (3.5×3 + 3.0×4) ÷ 7 = 3.21。
- 忘记 +/- 偏移。 B+（3.3）和 B−（2.7）相差 0.6，而非 0。
- 包含通过/失败课程。 这些课程通常没有绩点，不应计入分母。
付诸实践
添加每门课程的成绩和学分，即可即时查看学期或累计 GPA。
Try the GPA Calculator
Supports +/- grades, credit weighting, and multiple courses.
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