GPA Calculator
Estimate a weighted GPA from up to four courses using letter grades and credit hours. The calculator maps common US-style grades to a 4.0 scale, multiplies each grade point by its credits, and divides quality points by total credits. It is a planning tool, not an official transcript calculation: schools vary in plus/minus values, repeated course rules, pass/fail treatment, honors weighting, and rounding. Check your institution's policy before submitting the number. Inputs stay in this browser.
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Add to Chrome — freeWhat it does
- Four courses
- Credit weighting
- 4.0 scale
- Quality-point breakdown
How to use GPA Calculator
- 1
Select each grade
Choose the letter grade that matches the course result on the ordinary 4.0 mapping.
- 2
Enter credits
Add each course's credit value; a three-credit class weighs three times a one-credit class.
- 3
Compare the estimate
Review GPA, total credits, and quality points, then compare them with your school's registrar rules.
How it works
Make the result comparable
Enter credits consistently and use the scale that matches the institution's policy. Mixing a four-point scale with percentage grades or treating a pass/fail course as a letter grade can create a neat number with no official meaning. Test one known transcript example before planning a target, and keep repeated courses, withdrawals, transfer credits, and weighted classes separate when the school treats them specially. The local calculation is useful for scenarios, but the registrar's record controls eligibility.
Record the grading assumptions
Save the course credits, grade scale, and weighting method with any GPA scenario. A school may use plus/minus bands, weighted advanced courses, repeated-course replacement, or a cumulative policy that differs from this simple calculation. Compare the displayed result with an official transcript or registrar policy before using it for eligibility, graduation planning, or an application. The calculator explains arithmetic; it does not decide how an institution evaluates a record.
Each letter grade maps to a grade-point value: A is 4.0, A- is 3.7, B+ is 3.3, and so on through F at 0.0. The calculator multiplies each value by the course's credits, adds the products, and divides by total credits. Courses with zero credits do not alter the average. The result is rounded to two decimal places for display while quality points and credits remain visible for checking.
Check the policy
Use the page for a quick semester scenario, then compare it with your school's grading handbook. Confirm whether withdrawals, incompletes, repeated courses, transfer credits, and pass/fail classes count. An estimate can help you plan a target grade, but the institution's official record controls academic decisions.
Planning a target
To explore a target semester GPA, change one grade at a time and watch the quality-point total. A high-credit course usually moves the result more than a low-credit elective. That planning exercise can show where improvement has the largest arithmetic effect, but it should not encourage ignoring workload, wellbeing, or a course's actual learning goals. Confirm any target with an advisor who knows your program requirements.
The four visible rows are a quick planning surface rather than a transcript importer. If you have more courses, add their quality points and credits using the same weighted formula or use your institution's official system. Do not round every individual course before averaging; premature rounding can move a borderline displayed GPA.
Examples
Equal-credit semester
Equal credits make the weighted average behave like the ordinary mean of the three grade points.
A heavier course
Credit weighting is why course count alone cannot reproduce a transcript GPA.
Frequently asked questions
Does every school use the same GPA scale?
No. Institutions can use different plus/minus values, maximum scales, honors weighting, pass/fail exclusions, repeated-course replacement, and rounding rules. This calculator uses a common unweighted 4.0 mapping for an estimate. Use the registrar's published policy when the number affects academic standing or admission.
Why do course credits change the GPA result?
A weighted GPA gives each course influence proportional to its credit hours. The tool multiplies grade points by credits, adds those quality points, and divides by total credits. A high-credit course therefore affects the result more than a one-credit course, even when both have the same letter-grade format.
Can I calculate an honors or weighted GPA here?
Not directly. The displayed mapping is an ordinary 4.0 scale and does not add honors, AP, IB, or school-specific bonus points. You can use the arithmetic idea with your institution's grade points, but verify the result against an official transcript or a school-provided calculator.