GPA Calculator
Free GPA calculator. Enter your course grades and credit hours to calculate your GPA on a 4.0 scale. Cumulative GPA also supported.
GPA Calculator (4.0 Scale)
Comprehensive Guide: College & High School Grade Point Average (GPA)
Learn weighted vs. unweighted 4.0 scales, credit-hour weighting algorithms, honors/AP boosts, and cumulative GPA forecasting.
1. What is Grade Point Average (GPA)?
A Grade Point Average (GPA) is a standardized numerical index quantifying an individual student’s overall academic achievement across an academic term or degree program. Educational institutions convert discrete letter grades (A, B, C, etc.) into continuous numerical quality points, which are then weighted in proportion to course credit hours or academic rigor.
2. The Universal Weighted GPA Mathematical Formula
To compute term or cumulative GPA, each course's quality points are multiplied by its allocated credit hours, summed, and divided by the total credit hours attempted:
Courses with zero credit hours, audit status, or Pass/Fail grading generally do not contribute to quality point totals or the credit divisor.
3. Standard 4.0 Unweighted & 5.0 Weighted Conversion Scale
| Letter Grade | Percentage Range | Unweighted Points (Standard) | Honors Weight (+0.5) | AP / IB Weight (+1.0) |
|---|---|---|---|---|
| A / A+ | 93% – 100% | 4.0 | 4.5 | 5.0 |
| A− | 90% – 92% | 3.7 | 4.2 | 4.7 |
| B+ | 87% – 89% | 3.3 | 3.8 | 4.3 |
| B | 83% – 86% | 3.0 | 3.5 | 4.0 |
| B− | 80% – 82% | 2.7 | 3.2 | 3.7 |
| C+ | 77% – 79% | 2.3 | 2.8 | 3.3 |
| C | 73% – 76% | 2.0 | 2.5 | 3.0 |
| D | 65% – 69% | 1.0 | 1.5 | 2.0 |
| F | Below 65% | 0.0 | 0.0 | 0.0 |
4. Graduated Step-by-Step Worked Problems
Problem 1: College Semester GPA Calculation
A university sophomore takes 5 classes totaling 16 credit hours. Compute the term GPA:
• Organic Chemistry (4 credits): Grade B+ (3.3) → 4 × 3.3 = 13.2 pts
• Multivariable Calculus (4 credits): Grade A (4.0) → 4 × 4.0 = 16.0 pts
• Macroeconomics (3 credits): Grade A− (3.7) → 3 × 3.7 = 11.1 pts
• World Literature (3 credits): Grade B (3.0) → 3 × 3.0 = 9.0 pts
• Chemistry Lab (2 credits): Grade A (4.0) → 2 × 4.0 = 8.0 pts
Total Quality Points: 13.2 + 16.0 + 11.1 + 9.0 + 8.0 = 57.3 points.
Total Credit Hours: 4 + 4 + 3 + 3 + 2 = 16 credits.
Term GPA: 57.3 ÷ 16 = 3.58125 ⟹ 3.58.
Problem 2: Updating Cumulative GPA
Before this term, the student completed 45 credit hours with a cumulative GPA of 3.40. What is their new cumulative GPA after completing 16 credit hours with 57.3 quality points?
• Previous total quality points: 45 credits × 3.40 GPA = 153.0 points.
• New total quality points: 153.0 + 57.3 = 210.3 points.
• New total credit hours: 45 + 16 = 61 credit hours.
• New Cumulative GPA: 210.3 ÷ 61 = 3.4475 ⟹ 3.45.
Result: Cumulative GPA rises from 3.40 to 3.45.
5. Target GPA Forecasting: What Grades Do You Need to Graduate with Honors?
To determine what GPA you need in your remaining credit hours C_rem to achieve a target graduation GPA G_target:
If the required remaining GPA exceeds 4.0 (on an unweighted scale), achieving the target GPA is mathematically impossible without repeating earlier courses for grade replacement.
6. Frequently Asked Questions (FAQ)
What is the difference between weighted and unweighted GPA?
Unweighted GPA treats all courses equally on a 4.0 scale regardless of difficulty: an A in remedial art is worth 4.0, just like an A in AP Physics. Weighted GPA awards extra points (typically +0.5 for Honors and +1.0 for AP or International Baccalaureate courses), allowing a maximum possible GPA of 5.0.
Do Pass/Fail (P/F) courses affect GPA?
Passing grades ('P') grant credit hours toward graduation requirements but are excluded completely from GPA calculations. However, at many universities, a failing grade ('F') in a pass/fail class earns 0.0 quality points and does damage your GPA.
What is considered a good GPA for college admissions and graduate school?
Nationally, an unweighted GPA of 3.0 to 3.5 is considered solid and competitive for most state universities. Highly selective colleges, medical schools, and elite law programs typically seek applicants with GPAs of 3.8 and above.