GPA looks simple — one number summarizing a semester — but the credit weighting trips people up: an A in a 4-credit course moves your GPA twice as much as an A in a 2-credit course. Eyeballing the average of your letter grades gives the wrong answer whenever credits differ.
This calculator does the weighting properly. Add each course with its grade and credit hours, and you get the semester GPA on the standard 4.0 scale. Then flip to the planner: enter your current cumulative GPA and credits, set a target, and see exactly what semester GPA you need next term to get there.
Part of the Everyday Calculators collection on CountCrunch.
How GPA is calculated
Example: A (4.0) in a 3-credit course = 12 points; B (3.0) in a 4-credit course = 12 points. Total 24 points ÷ 7 credits = 3.43 GPA. Note the B in the heavier course counted as much as the A.
The standard 4.0 scale
| Grade | Points | Grade | Points |
|---|---|---|---|
| A+ | 4.0 | C+ | 2.3 |
| A | 4.0 | C | 2.0 |
| A− | 3.7 | C− | 1.7 |
| B+ | 3.3 | D+ | 1.3 |
| B | 3.0 | D | 1.0 |
| B− | 2.7 | F | 0.0 |
Some schools weight honors/AP courses (a 5.0 scale); if yours does, confirm the scale before comparing with published averages.
Planning your target GPA
Cumulative GPA moves slowly once you have many credits — that is just math. With 60 credits at 3.0, even a perfect 4.0 semester of 15 credits only lifts you to 3.2. The planner shows the required semester GPA for your target, so you know whether "get straight A's" is actually enough or whether you need more semesters.
Frequently asked questions
How do I calculate my GPA?
Multiply each grade's point value by its credit hours, add those up, and divide by total credits. The calculator above handles the weighting for you.
What is a good GPA?
Generally 3.0+ is solid, 3.5+ is strong for competitive programs and scholarships, and many graduate programs look for 3.0 minimum. Context (major difficulty, school) matters.
Does an F ruin your GPA?
It hurts a lot because it adds credits with zero points. One F in a 3-credit course can drop a 3.5 to ~3.1. Retaking the course (where allowed) can replace the grade.
How can I raise my GPA fast?
There is no shortcut: GPA is credit-weighted, so early semesters with few credits move it most. Focus grade effort on high-credit courses, since they swing the average hardest.
What is the difference between weighted and unweighted GPA?
Unweighted caps at 4.0 for all courses. Weighted gives honors/AP courses extra points (often up to 5.0), so weighted GPAs above 4.0 are possible. Colleges often recalculate to their own standard.