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GPA Calculator
Add your classes, credits, and letter grades to calculate your semester GPA (and optional cumulative GPA). Choose a grading scale (4.0 / 4.33 / 5.0), apply simple weighted boosts, and save/share results. Fast, clear, and made for real schedules.
⚡Instant semester + cumulative GPA
🧮Credits + grade points (quality points)
💾Save results locally (optional)
📤Shareable GPA summary
📚 How GPA is calculated
The formula (with examples)
GPA stands for grade point average. It’s usually computed as a credit‑weighted average of your grade points. That means a class with more credits affects your GPA more.
1) Convert grades to points
Schools convert letter grades to numbers (grade points). A common 4.0 mapping is: A = 4.0, B = 3.0, C = 2.0, D = 1.0, F = 0.0. Many schools add plus/minus values (like A- = 3.7, B+ = 3.3). Some treat A+ as 4.0; others treat it as 4.33 — that’s why this calculator includes a scale selector.
2) Compute quality points
For each class: quality points = grade points × credits. Example: B+ (3.3) in a 3‑credit class → 3.3 × 3 = 9.9 quality points.
3) Add and divide
Add quality points across classes, add credits across classes, then: GPA = total quality points ÷ total credits.
Weighted GPA (optional)
Many high schools “weight” advanced courses (Honors, AP/IB). A common simple approach adds a boost to the grade points (for that course type) before multiplying by credits. This calculator supports a customizable simple weighting mode with sliders for the boosts.
Because grading policies vary (rounding, retakes, pass/fail), use this tool as a clear estimate — then confirm with your official transcript if you’re making eligibility decisions.
🧠 GPA strategy
How to improve GPA (math-first)
GPA improvement follows a few predictable patterns. If you want impact fast, focus your energy where the numbers move most.
- High-credit courses: raising a 4‑credit class by one letter can outweigh multiple electives.
- Near boundaries: moving a B+ to an A- (or a C+ to a B-) can be a big step.
- Consistency: steady “good” beats occasional “perfect” if you’re also dropping low grades.
- Know the rules: some programs recalculate GPA using only core subjects.
- Track terms: save each semester GPA to see trends and set targets.
Reminder: GPA is a number, not a personality test. Use it as feedback — then build a plan.
🧾 Worked examples
Two quick calculations
Example 1: Unweighted
Math (4 credits, A- = 3.7) → 14.8
English (3 credits, B+ = 3.3) → 9.9
History (3 credits, A = 4.0) → 12.0
Science (4 credits, B = 3.0) → 12.0
Total quality points = 48.7
Total credits = 14
GPA = 48.7 ÷ 14 = 3.478… → 3.48
Example 2: Weighted (simple boosts)
If Science is AP/IB (+1.0) and English is Honors (+0.5):
English becomes (3.3 + 0.5) × 3 = 11.4
Science becomes (3.0 + 1.0) × 4 = 16.0
Others unchanged.
New total quality points = 54.2
Weighted GPA = 54.2 ÷ 14 = 3.871… → 3.87
❓ FAQ
Frequently Asked Questions
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Is GPA always out of 4.0?
No. Many schools use 4.0, some use 4.33 (A+), and many high schools report weighted GPAs that exceed 4.0.
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What about pass/fail?
Often pass/fail doesn’t affect GPA. If your school excludes it, don’t enter those courses here.
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Why doesn’t my GPA match my portal exactly?
Common causes: rounding rules, A+ policy, plus/minus mapping, repeated courses, and weighting differences.
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Can weighted GPA be above the scale?
Yes. Weighted systems can exceed 4.0. That’s normal if boosts are used.
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Related links (provided)
🛡️ Accuracy checklist
Match your school’s policy
- A+ policy: some schools treat A+ as 4.0 (not 4.33).
- Plus/minus mapping: not every school uses 3.7/3.3 exactly.
- Rounding: some round per class, others round only the final GPA.
- Course inclusion: labs, withdrawals, pass/fail may be excluded.
- Weighting: boosts vary and may be capped.