Free Grade Calculator Online
Calculate your GPA and letter grades from marks or percentages. Add multiple subjects with custom credit weights for a weighted average GPA.
| Subject | Marks | Max | % | Grade | GPA | Credits |
|---|
About the Grade Calculator
This free grade calculator computes your overall GPA and letter grade from marks across multiple subjects. You can assign different credit weights to each subject so that higher-credit courses have a proportionally larger influence on your final GPA โ this is called a weighted GPA.
Both the 4.0 scale (used in US and many international universities) and the 10-point scale (widely used in India) are supported. The calculator also shows the percentage equivalent and per-subject grade breakdown in a clear table.
How to Use the Grade Calculator
Choose GPA Scale
Select the 4.0 scale (A = 4.0) or the 10-point scale (A+ = 10) used by your institution.
Enter Each Subject
Add a subject name, marks obtained, maximum marks and credit hours. Click "+ Add Subject" for more rows.
Click Calculate Grade
Your overall GPA, percentage, letter grade and a per-subject breakdown table appear instantly.
Grade Scale Reference
| Percentage | Letter Grade | 4.0 GPA | 10-pt GPA |
|---|---|---|---|
| 90โ100% | A+ | 4.0 | 10 |
| 85โ89% | A | 4.0 | 9 |
| 80โ84% | Aโ | 3.7 | 8.5 |
| 75โ79% | B+ | 3.3 | 8 |
| 70โ74% | B | 3.0 | 7 |
| 65โ69% | Bโ | 2.7 | 6.5 |
| 60โ64% | C+ | 2.3 | 6 |
| 55โ59% | C | 2.0 | 5.5 |
| 50โ54% | Cโ | 1.7 | 5 |
| 40โ49% | D | 1.0 | 4 |
| < 40% | F | 0.0 | 0 |
Frequently Asked Questions
A weighted GPA accounts for the number of credit hours each subject carries. A 4-credit subject contributes more to your GPA than a 1-credit subject. The formula is: ฮฃ(GPA ร Credits) รท ฮฃ(Credits).
If credits are blank or 0, the calculator defaults to 1 credit for that subject, giving equal weight to all subjects (unweighted average).
It lets you use any marks scale โ whether 100, 50, 25 or any other total. The calculator converts your marks to a percentage (marks รท max ร 100) before determining the letter grade.
On the standard 4.0 scale, 4.0 is the highest (corresponding to 85%+). Some institutions use a modified scale that goes above 4.0 for AP or honours courses, but that is not used here.