GPA Calculator
Four courses, one number that follows you onto every application. An A, a B, an A, and a B across 13 credits come out at 3.46. That number is a weighted average: the bigger courses pull harder than the small ones. Add one row per course below, pick each grade, type its credit hours, and the calculator shows your semester GPA, total credits, and total grade points, with each row’s maths shown. To get a cumulative GPA, add all your courses across semesters, or enter your current GPA and credits and add the new semester on top.
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Result
The Semester That Explains It All
A student takes four courses in one semester. Course 1: A (4.0) × 3 credits = 12.0 grade points. Course 2: B (3.0) × 4 credits = 12.0 grade points. Course 3: A (4.0) × 3 credits = 12.0 grade points. Course 4: B (3.0) × 3 credits = 9.0 grade points.
Total grade points = 12.0 + 12.0 + 12.0 + 9.0 = 45.0. Total credits = 3 + 4 + 3 + 3 = 13. GPA = 45.0 ÷ 13 = 3.4615… = 3.46 (rounded to two places). Notice that Course 2, the 4-credit course, pulls the GPA more than the 3-credit courses. That is the whole point of weighting: bigger courses count more.
Why Credits Matter More Than Grades
GPA is a weighted average. A 4-credit course counts more than a 2-credit course. Each grade converts to grade points on the 4.0 scale, then the credit hours do the weighting.
GPA = Sum of (Grade points × Credits) ÷ Sum of Credits
| Grade | Grade points |
|---|---|
| A | 4.0 |
| A− | 3.7 |
| B+ | 3.3 |
| B | 3.0 |
| B− | 2.7 |
| C+ | 2.3 |
| C | 2.0 |
| C− | 1.7 |
| D+ | 1.3 |
| D | 1.0 |
| F | 0.0 |
Pass/fail courses and withdrawals are left out. They carry no grade points.
What the Number Gets You, and What It Doesn’t
On a 4.0 scale, 3.5 and above is generally strong, 3.0 to 3.49 is solid, and below 2.0 usually triggers academic probation at many schools. These are rough guides, not rules. Cut-offs differ by school and programme.
Two more semesters to calibrate against. Straight A’s, 12 credits → 4.00. All B’s, 15 credits → 3.00. And one F (0.0) in a 3-credit course plus A’s elsewhere: watch how far it drags the GPA down. Retaking that course is usually the fastest fix.
One warning before you quote the number anywhere official. Grading scales vary by school. Some schools use a 5.0 or 10-point scale, some give A+ a 4.3, and some weight honours or AP courses differently. This calculator uses the standard unweighted 4.0 scale shown above, so check your school’s scale before treating the result as official.
Questions Students Ask
How is GPA calculated?
Convert each grade to grade points on a 4.0 scale, multiply by the course’s credit hours, add all the results, and divide by total credit hours. Example: 45.0 grade points ÷ 13 credits = 3.46 GPA.
What is a weighted GPA?
A weighted GPA gives harder courses (honours, AP, or IB) extra points, often on a 5.0 scale, so an A in an AP course can count as 5.0 instead of 4.0. This calculator uses the standard unweighted 4.0 scale; if your school weights advanced courses, check its own scale.
Do all schools use a 4.0 scale?
No. Some use 5.0, some use percentage or 10-point scales, and some add weight for advanced courses. Always confirm your school’s scale. A GPA number only means something on the scale it was calculated with.
Other tools for students: the Average Calculator, because GPA is a weighted average (plain averages live there), the Percentage Calculator to turn percentage marks into grade points, the Ratio Calculator to simplify ratios and split shares, and the Age Calculator for exact age in years, months, and days. How to Calculate Percentage helps if your school reports marks as percentages. All Math Calculators · All Calculators