GPA & GPAX Calculator
Work out your grade point average in seconds. Just add each subject, enter its credits and pick the grade, and this free GPA/GPAX calculator instantly shows your term GPA, the credits counted and your total quality points. It uses the 4-point scale common at Thai universities (A=4 down to F=0) and automatically drops any withdrawn (W) subject from the maths. A second mode helps you plan ahead: enter your current cumulative GPAX and remaining credits to see exactly what average grade you need to hit your target GPAX. Everything runs in your browser — your grades never leave your device.
Enter the credits and grade for each subject. Subjects marked W or withdrawn are excluded from the GPA.
Estimate the average grade you need across your remaining credits to reach your target GPAX.
Your latest cumulative grade point average (0.00–4.00).
Your result will appear here
Enter credits and grades, or fill in your target GPAX details, to see the result.
Grade point average (GPA) GPA = sum of (credits × grade point) divided by the credits counted.
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Credits counted Total credits of graded subjects (A to F), excluding any marked W.
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Total quality points Sum of credits × grade point across all subjects.
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Calculated on the 4-point scale (A=4, B+=3.5, B=3, C+=2.5, C=2, D+=1.5, D=1, F=0). Subjects marked W/withdrawn are excluded. Some institutions use different rules.
Average grade needed The average grade point across your remaining credits that lands your GPAX exactly on target.
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Total credits at graduation Credits already earned plus the credits you have left.
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This is a planning estimate only. It assumes every remaining credit is graded. Your actual result depends on your institution’s rules.
How to use
- Open the “Term GPA” mode and add a row for each subject you took.
- Enter the credits for each subject and choose the grade you earned (A to F, or W if withdrawn).
- Read your GPA, credits counted and total quality points, updated automatically.
- Switch to “Cumulative GPAX + goal” mode to plan the grades you still need.
- Enter your current GPAX, credits earned, remaining credits and target GPAX.
- Read the average grade you need, then copy the result to save or share it.
Features
- Add and remove unlimited subjects, with an optional field for each subject name
- Uses the Thai university 4-point scale (A=4, B+=3.5, B=3, … F=0)
- Automatically excludes withdrawn (W) subjects from the GPA
- Target-GPAX planner shows the average grade needed for your remaining credits
- Warns you when a target is out of reach or already secured
- 100% in-browser — your grade data never leaves your device