grade_point — letter grade converted to scale (4.0, 5.0, 10.0 etc.)
credits — credit hours / units for each course
Worked example: Three courses: A (3 credits), B (3 credits), B (3 credits). GPA = (4×3 + 3×3 + 3×3) / 9 = 30/9 = 3.33.
Letter grade conversion (US 4.0 scale)
Letter
Percentage
GPA (4.0)
GPA (4.3)
A+
97–100
4.0
4.3
A
93–96
4.0
4.0
A−
90–92
3.7
3.7
B+
87–89
3.3
3.3
B
83–86
3.0
3.0
B−
80–82
2.7
2.7
C+
77–79
2.3
2.3
C
73–76
2.0
2.0
D
60–69
1.0
1.0
F
< 60
0.0
0.0
Standard / source: US standard 4.0 / 4.3 / 5.0 (AP/honours); UK 1st/2:1/2:2/3rd classification; ECTS for Europe.
Used for: University applications, scholarship eligibility, academic transcripts, graduate-school admissions, transfer-credit evaluation.
🎓 GPA Calculator
Formula
This calculator uses the standard gpa calculator formula:
GPA Formula
GPA = Σ(Grade Points × Credits) / Σ(Credits)
Frequently Asked Questions
How is GPA calculated?⌄
GPA = Sum of (grade points × credit hours) for all courses, divided by total credit hours. For example: A (4.0 × 3 credits) + B (3.0 × 4 credits) = 24 points ÷ 7 credits = 3.43 GPA.
What does a 4.0 GPA mean?⌄
A 4.0 GPA represents a perfect grade point average — all A grades on the standard US 4.0 scale. Some schools use weighted scales where A+ = 4.3 or 5.0.
What is a good GPA?⌄
A GPA of 3.5–4.0 is generally considered excellent. 3.0–3.49 is good. 2.5–2.99 is satisfactory. Below 2.0 often places students on academic probation.
What is the difference between weighted and unweighted GPA?⌄
Unweighted GPA uses a standard 4.0 scale. Weighted GPA gives extra points for harder courses (AP, IB, Honors), sometimes on a 5.0 scale.
What GPA do you need for honours?⌄
Cum Laude typically requires 3.5+ GPA; Magna Cum Laude requires 3.7+; Summa Cum Laude requires 3.9+. Requirements vary by institution.
Can I raise my GPA in my last semester?⌄
Yes, but the impact decreases as you accumulate more credits. Earlier semesters have proportionally more weight when you have fewer total credits.
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Credit-weighted mean of grade points. The scale is institution-specific — 4.0, 4.3, 5.0 and 10-point scales are all in use, and grade-to-point mappings differ.
Core formula
GPA = Σ(grade point × credits) / Σ(credits)
Why this matters
GPA is credit-weighted — a poor grade in a 4-credit course hurts far more than in a 1-credit one. And GPAs from different institutions are not directly comparable; always confirm your school’s scale.
Independently verified
12 July 2026 — Formula re-derived from first principles and verified numerically against hand-computed reference cases, including edge cases and unit handling.
Results are for guidance. Verify against the current edition of the governing standard and have a qualified professional review before use in practice.