GPA Calculator — Convert Grades Across Systems
Convert your GPA between US 4.0, UK Honours, ECTS, and Chinese percentage systems. Supports weighted GPA with credit hours.
Course Breakdown
| Course Name | Grade | Credits | Result |
|---|---|---|---|
| Math | 3.7 | 3 | 96.00 (A) |
| English | 4 | 3 | 100.00 (A) |
How to Use the GPA Calculator
Convert grades between the US 4.0, UK Honours, European ECTS, and Chinese 100-point scales in four steps. The tool weights every course by its credit hours so your converted GPA reflects your real transcript.
- Pick your original grading system (the one your transcript uses) under From System.
- Pick the target grading system you want to convert to under To System.
- Enter each course's grade and credit hours. Add as many courses as you need with + Add Course.
- Read your converted GPA, total credits, and letter grade in the Result panel. A per-course breakdown shows how each grade was mapped.
How Grade Conversion Works
Every grading system has a different pass line and a different top score: a US 1.0 is the pass mark while 4.0 is the max; a UK pass is 35% and the max is 100%; a Chinese pass is 60 out of 100. A naive percentage would treat these as the same scale, which is why a 70% in the UK (a First Class) is excellent but a 70% in China (a C) is mediocre.
This calculator maps every system onto a common Normalized Pass Index (NPI) from 0 to 100, where 0 is the pass line and 100 is the top grade, then projects that index onto the target system. Each course is weighted by its credit hours before the final GPA is computed.
Grading System Reference
| System | Pass | Top | Scale |
|---|---|---|---|
| US 4.0 | 1.0 (D) | 4.0 (A+) | 0.0–4.0 |
| UK Honours | 35% | 100% | 0–100% |
| ECTS | E | A | A–F |
| Chinese | 60 | 100 | 0–100 |
FAQ
How is a weighted GPA calculated?
Each course contributes grade × credit hours. The calculator sums these weighted grades across all courses and divides by the total credit hours, so a 4-credit course counts twice as much as a 2-credit course.
Can I convert a Chinese percentage to a US GPA?
Yes. Select Chinese (0-100) as the From System and US 4.0 GPA as the To System. A Chinese score of 90 maps to roughly a 3.7–4.0 US GPA because both sit near the top of their own scales once normalized to the pass line.
What is a First Class degree in the UK?
A UK Honours percentage of 70% or above is a First Class (1st). 60–69% is an Upper Second (2:1), 50–59% a Lower Second (2:2), and 40–49% a Third Class.
Is the ECTS grade the same in every European country?
ECTS grades (A to F) are a common reference, but local grading varies. A German 1.0 (sehr gut) and a French 16/20 are both strong grades but use different scales; this tool uses the ECTS A–F letters as the neutral reference.
Does this tool store my data?
No. All calculations run in your browser. Nothing you type is sent to a server or saved anywhere, so it is safe to enter real grades.