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How do you convert a GPA out of 100 to a GPA out of 4?

Acar123Acar123 Posts: 69Registered User Junior Member
edited June 2007 in College Admissions
The topic is self explanatory. If it helps, I have a 91 average.
Post edited by Acar123 on
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Replies to: How do you convert a GPA out of 100 to a GPA out of 4?

  • mj93mj93 Posts: 3,601- Senior Member
    It depends on the school .. generally a 91 is 3.7-ish i think
  • Acar123Acar123 Posts: 69Registered User Junior Member
    What do you mean "It depends on the school"? A 90 is considered an A at my school but the problem is that pluses and minuses aren't really used so I don't know if I would technically have an A or an A- average.
  • ducktapeducktape Posts: 1,000Registered User Member
    See, a 91 at my school would barely be a B+, or a 3.4. Depending on how it was rounded, it could even be a B, or a 3.0. It really does depend on school.
  • Acar123Acar123 Posts: 69Registered User Junior Member
    If it depends so much on the school then it would seem to be a terribly ineffective method of selecting applicants, no?
  • ducktapeducktape Posts: 1,000Registered User Member
    Well, not really- I mean, admissions people have access to your school's grading scale, so they'll see my A- and be like "Oh, well at worse that would have been a 93." Whereas, at schools where a 90 is still and A they'll look at someone with all As and say "Well, was this kid at the low end of the As or high end?"

    Really, GPA is more important for the rank it gets you. Grades in classes are individually more important.
  • Acar123Acar123 Posts: 69Registered User Junior Member
    My school doesn't rank. What's the deal now?
  • quaerequaere Posts: 1,264Registered User Senior Member
    Colleges often like to view GPA in conjunction with class rank. It helps them to figure out what grade distribution is like -for example, is a student with an A- record at the very top of their class (harsh grading), or are they only in the top 40% (lots of grade inflation)?

    But even if your school doesn't rank, you still have a GPA and it will still be considered in the admissions process. The issue is what your school's cutoff is for each grade, since GPA on a 4-point scale is based on letter grades, not percentages.
  • knightshieldknightshield Posts: 323Registered User Member
  • tryingtorelaxtryingtorelax Posts: 38Registered User Junior Member
    Exactly knightshield..I was just about to say that. You take the percentage number (91) and divide by 25.
  • b@r!umb@r!um Posts: 9,412Registered User Senior Member
    knightshield, I hope you don't seriously believe that 50% is a C and 25% a D...
  • b@r!umb@r!um Posts: 9,412Registered User Senior Member
    The only exact way to convert your GPA is to convert every single single percentage grade to a letter grade and then calculating the GPA.

    There is no exact formula for the conversion because letter grades have discrete values but percentages are continuous.
    The best approximation I know works like this:

    GPA on a 4.0 scale = 4 * [Percentage GPA minus minimum percentage for a D] / [100 minus minimum percentage for a D]

    That formula, however, is flawed too because it assigns a 0 average to the minimum percentage of a D which is technically still a 1.0.
  • quaerequaere Posts: 1,264Registered User Senior Member
    Dividing by 25 doesn't work because the four-point scale is scaled differently. For example, take the simplest possible scale:
    A=90-100=4.0
    B=80-89=3.0
    C=70-79=2.0
    D=60-69=1.0
    F=0-50=0.0
    then the interval between 1.0 and 2.0, 2.0 and 3.0, 3.0 and 4.0, is 10 percentage points, but the interval between 0.0 and 1.0 is 50 percentage points. So you can't just divide. You really do need to calculate from letter grades.

    edit: posted at the same time as b@r!um :)
  • Carpe AeternumCarpe Aeternum Posts: 721Registered User Member
    If it depends so much on the school then it would seem to be a terribly ineffective method of selecting applicants, no?

    Schools put it on thier own 4-point scale. It does depend entirely on the school. A 91 at my school would be about a 3.4, maybe just lower.

    It doesn't really matter what your high school does with its 4.0 scale/ what percentages are in letters if your school reports grades in percentage. The colleges will all re-work it anyway.
  • shravasshravas Posts: 2,012Registered User Senior Member
    You need to look at each of your grades individually, and not as a whole to convert to the 4.0 scale. A 91 can mean a lot of things - if you're equally strong in all subjects, that can be a 4.0 , if you get a 91 in all of your subjects. But if you're a lot stronger in one subject than the rest, you can get a 100 in that one subject, and then maybe like 89's in the others and get a 3.2 gpa.

    And I'm assuming that a 91 is an A, and a 89 is a B.
  • SungchulSungchul Posts: 1,498Registered User Senior Member
    All my grades are As and I have one B from 8th grade. What a bummer. That gives me a 3.96 UW GPA.
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