Choosing pass/fail for a course is a small decision with a real GPA effect. This calculator shows side by side what your cumulative GPA becomes if you take a class for a letter grade versus pass/fail, so you can protect your average or boost it on purpose.
How it works
Cumulative GPA is total grade points divided by total graded credit hours:
new graded GPA = (current GPA × current credits + course credits × grade points)
/ (current credits + course credits)
Under pass/fail, a passing course adds its credits to your earned hours but contributes no grade points and is excluded from the graded total, so the GPA formula leaves your numeric average unchanged:
pass/fail GPA = current GPA (unchanged, credits still earned)
The tool compares both numbers. If your expected letter grade has a grade-point value above your current GPA, the letter-grade option wins; if it is below, pass/fail keeps your average from dropping.
Example and tips
If you have a 3.6 GPA over 60 credits and expect a C (2.0) in a 3-credit
class, taking it for a letter grade drops you to about 3.52, while pass/fail
holds you at 3.60. Always confirm your school’s policy: some programmes cap
the number of pass/fail courses, exclude them from major requirements, or treat
a pass/fail F as a graded zero.