Math · grades
Turn grades into a GPA.
Enter credit hours and letter grades or percentages to get a credit-weighted semester GPA, then merge prior coursework for a cumulative total.
Your courses
Credits and grades stay in your browser.
Prior coursework (optional)
Add an existing GPA and credit total to merge it with this term.
Semester GPA
3.52
3.52 on a 4.0 scale · 12 credits · 42.30 quality points
Courses counted
4
Total credits
12
Cumulative GPA
Enter prior credits above to see a cumulative GPA. With no prior work, the cumulative result equals the semester GPA.
How the calculation works
Each course earns quality points: grade points multiplied by credit hours. The semester GPA is the total quality points divided by total credits. Cumulative GPA blends prior and new credits the same way.
Schools differ on weighting, plus/minus values and whether A+ exceeds 4.0. Check your registrar's scale before relying on the number for an official purpose.
How it works
How a credit-weighted GPA is built
A GPA is a weighted average, not a plain average of grades. Courses with more credit hours influence the result more, which is why a four-credit course can move the number further than a one-credit seminar.
Quality points
Each course contributes quality points: its grade points multiplied by its credit hours. An A in a three-credit course adds 12 quality points; a B in a four-credit course adds 12 as well. Adding those points and dividing by total credits gives the GPA.
Percentages and letter grades
Letter grades map to a standard 4.0 scale, with plus and minus steps between whole letters. Percentages are converted using common US boundaries, such as 93 for an A and 90 for an A-. Schools differ, so check the registrar's published scale before treating the result as official.
Merging prior coursework
A cumulative GPA cannot be averaged from two GPAs directly unless the credit totals match. Convert each GPA back into quality points using its credits, add the new term's points, then divide by all credits. The optional prior-GPA fields do exactly that.
Good to know
The result is a guide, not a guarantee.
This calculator runs entirely in your browser. Check the assumptions, keep the inputs realistic, and use the result as a starting point for a decision.
GPA rules differ by school. Use this for planning, and check your registrar for the official calculation.
How is a GPA calculated?
Each course earns quality points equal to its grade points multiplied by its credit hours. The GPA is the total quality points divided by total credits. A four-credit A (4.0) contributes 16 quality points; a three-credit B (3.0) contributes 9.
Which grade scale does this use?
A standard 4.0 scale: A+ and A are 4.0, A- is 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, D- 0.7 and F 0.0. Schools vary, so confirm your registrar's values.
How are percentages converted to grade points?
Percentages use common US boundaries: 93 and above is an A, 90 an A-, 87 a B+, 83 a B, 80 a B-, 77 a C+, 73 a C, 70 a C-, 67 a D+, 63 a D, 60 a D-, and below 60 an F. Different institutions may use different cutoffs.
How does the cumulative GPA work?
Enter a prior GPA and the number of credits it covers. The calculator converts that history into quality points, adds this term's quality points, and divides by all credits. This is the same weighted average your school uses when combining terms.
Does it include pass/fail or transfer courses?
Not automatically. Pass/fail courses usually carry no grade points and are often excluded from the GPA, and transfer credits are handled differently by each school. Leave them out unless your registrar says otherwise.
Is the calculator free and private?
Yes. It needs no account, runs entirely in your browser, and the courses you enter are not sent to simplytools.us or any third party.