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GPA Calculator

A grade point average condenses a transcript into one number on a fixed scale — in the US, almost always the 4.0 scale, where an A is 4.0 and an F is zero. Credit weighting is what sets it above a plain average: a four-credit course moves the number twice as much as a two-credit one. This calculator applies that weighting across four courses and names the scale it uses, because scales differ between universities.

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Letter grade on the US 4.0 scale

Results update as you type.

Results

GPA (US 4.0 scale)
3.5
Total credits
12
Total grade points
42

How is the GPA calculated?

Pick the letter grade for each of the four courses from the 4.0-scale options — A (4.0) down to F (0.0) — and enter each course's credit hours. The calculator multiplies every grade point by its course's credits, adds the grade points together, divides by the total credits and rounds to two decimals. Swap a single dropdown and watch the GPA shift, which makes it easy to see what one more A is worth against a lighter course load.

Formula

GPA = Σ (grade points × credits) ÷ Σ (credits)

where:
grade points = the 4.0-scale value of each letter grade (A = 4.0, A− = 3.7, B+ = 3.3 … F = 0.0)
credits = credit hours of the course that grade belongs to
Σ = the sum across all courses entered

With equal credits the formula reduces to a plain average of the grade points.

Example

Courses: A (4.0) × 3 credits, B+ (3.3) × 3, A− (3.7) × 3, B (3.0) × 3
Grade points = 12 + 9.9 + 11.1 + 9 = 42
Total credits = 12
GPA = 42 ÷ 12 = 3.5
Swap one course to an F and the same semester drops to 2.75 — a single grade moves the average by 0.75 points when it carries a quarter of the credit load.

Things to remember

The 4.0 scale here is the common US convention; some schools run plus/minus variants, and Indian universities report CGPA out of 10 instead — the CGPA calculator covers that. Transcripts round differently, so treat this as a working figure and check your institution's policy before quoting it.

Frequently Asked Questions

How is GPA calculated from a percentage?

GPA is not a direct conversion of a percentage; it is built from letter grades and credits. Many schools publish their own mapping — a common one sends 90–100% to 4.0, 80–89% to 3.0 and so on — so convert using your institution's table, then weight each course by its credits as this calculator does.

What is a good GPA on the 4.0 scale?

On the US 4.0 scale, 3.0 is solid, 3.5 is strong and most graduate programmes set cut-offs between 3.0 and 3.7. What counts as good depends on the field and the institution, so compare against the programme you are actually applying to rather than a universal bar.

Does credit weighting really change my GPA?

Yes, materially. A 4.0 in a four-credit course contributes twice the grade points of the same 4.0 in a two-credit course, so heavy courses dominate the average. Dropping a failed four-credit course can lift a GPA far more than acing a one-credit elective.

How do I convert my CGPA into GPA?

Divide the CGPA by its scale maximum and multiply by 4: an 8.4 CGPA on the Indian 10-point scale maps to about 3.36 on the US scale. Treat the result as indicative — admission offices read the original scale alongside any conversion you provide.

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