Calculate GPA from grades and credit hours

Instead of treating every class as equally important, it gives a larger influence to courses carrying more credits, which matches the standard calculation used by many schools and academic programs. Enter one row per course and receive the weighted GPA, total credits, total quality points, and number of included courses. The calculation is deterministic, runs without network access, and rejects zero or negative credit hours before producing a result.

Enter grade points and credits for every course

Create one course row for each class that should count toward the result. In each row, grade_points is the numeric point value assigned to the final grade, while credit_hours is the weight carried by that course. For example, a school might assign a point value of 4 to an A and give a semester course 3 credit hours. Use the values published by your own institution because grading scales and credit systems are not universal. Do not enter a letter grade unless you have first converted it to the correct grade-point value. Include repeated courses only when the institution's policy says both attempts belong in the GPA. The calculator requires at least one course, accepts fractional grade points and fractional credits, and rejects missing or nonnumeric values. Grade points must be zero or greater. Every credit-hours value must be greater than zero, because a course with no positive weight cannot contribute meaningfully to a weighted average. Review the rows carefully before calculating, especially when copying values from a transcript.

Understand how the weighted GPA is calculated

For each course, the calculator multiplies grade_points by credit_hours. That product is commonly called quality points. It then adds all course quality points, adds all credit hours, and divides the first total by the second. This procedure gives a course with more credits proportionally more influence than a course with fewer credits. Suppose two courses have identical grades but different credit values: the higher-credit course contributes more quality points, yet the final ratio remains consistent because its credits also increase the denominator. The response shows weighted_gpa rounded to six decimal places, along with total_credits, total_quality_points, and course_count, so you can audit the result instead of receiving an unexplained number. Intermediate products are not rounded. Only the returned totals and GPA are normalized to six decimal places, which helps keep repeated runs stable while retaining useful precision. If your institution applies special rules such as grade replacement, pass/fail exclusions, honors weighting, or a maximum point scale, apply those policies when preparing the course rows.

Use the result responsibly

Treat the calculated value as a mathematical check, not as an official transcript decision. Registrars may exclude transferred courses, developmental classes, withdrawals, pass/fail work, or repeated attempts, and some programs calculate a separate major or prerequisite GPA. Before using the result for an application, scholarship review, or academic plan, compare the included courses and grade-point conversions with the relevant published policy. The totals in the response make that review easier: total_credits should match the credits you intended to include, total_quality_points can be checked against a spreadsheet, and course_count can reveal an omitted or duplicated row. The calculator is also useful for scenario planning. You can copy the current course list, add possible future grades with their credits, and see how differently weighted courses affect the projected GPA. For automated use, the same deterministic calculation is available through the API for $0.002 per request. No external service is contacted, and the computation does not depend on the current time, randomness, or changing reference data.