GPA Calculator
Calculate your GPA from courses, letter grades, and credit hours instantly.
Written by Golam Rabbani, Founder & Lead Engineer
How to use this gpa calculator
- Enter a course name (optional) in the first field.
- Select the letter grade from the dropdown for that course.
- Enter the number of credit hours for the course.
- Click "+ Add Course" to add more rows, then press Calculate GPA.
- Use Copy to save the result, or Reset to start a new calculation.
About this gpa calculator
The GPA calculator takes a list of courses with letter grades and credit hours and returns your weighted grade point average on the standard 4.0 scale.
The tool uses the weighted average formula: GPA = (sum of grade points × credits for each course) ÷ total credit hours. Grade points follow the common US 4.0 scale — A/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. Heavier courses (more credits) carry proportionally more weight in the final average.
For example, if you take Calculus (A, 4 credits), English (B+, 3 credits), and History (C+, 2 credits), the weighted sum is (4.0 × 4) + (3.3 × 3) + (2.3 × 2) = 16.0 + 9.9 + 4.6 = 30.5 points over 9 total credits, giving a GPA of 30.5 ÷ 9 ≈ 3.39. This is useful for students monitoring academic standing, checking scholarship eligibility, or planning which courses to retake.
FAQ
- What is a GPA calculator and how is GPA calculated?
- A GPA calculator converts your letter grades and credit hours into a single grade point average. It multiplies each course's grade points by its credit hours, sums those products, and divides by the total credits — the standard weighted average method used by US colleges.
- What grade point scale does this tool use?
- The tool uses the common US 4.0 scale: A/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. If your institution uses a different scale, check with your registrar.
- How accurate is this GPA calculator?
- The result exactly matches the weighted average formula when the grade scale aligns. Accuracy depends on whether your school's scale matches the 4.0 mapping above — some institutions award A+ = 4.3 or use different plus/minus breakpoints. Always confirm your official GPA on your transcript.
- What happens if I leave the credit hours field empty or enter zero?
- The calculator shows an error and will not compute a result until all courses have a positive credit hour value. Courses with zero or missing credits are not accepted.
- Does this GPA calculator store my course data?
- No. The GPA calculator runs entirely in your browser; no course names, grades, or credit hours are sent to a server or saved between visits.
- Is the GPA calculator free?
- Yes. It is free to use with no signup, no account, and no usage limit.