AACOMAS GPA Calculator
Estimate your Science GPA and Overall GPA the way AACOMAS calculates them for DO medical school applications — with correct Math-as-Non-Science categorization and post-2017 grade averaging.
| Course Name | Grade | Credits | Category | Subject | Repeat | Points | |
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AACOMAS Grade Reference
Key rule: A+ = 4.0 (not 4.33). Mathematics is Non-Science in AACOMAS.
Legacy Grade Replacement (pre-2017)
Historical comparison only. Before 2017, AACOMAS replaced the original grade with the most recent attempt. This toggle simulates that old behavior — it does not reflect current AACOMAS policy.
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Fill in your courses above and click Calculate AACOMAS GPA to see your Science, Non-Science, and Overall GPAs.
What Is the AACOMAS GPA?
AACOMAS — the American Association of Colleges of Osteopathic Medicine Application Service — is the centralized application portal for DO (Doctor of Osteopathic Medicine) programs in the United States. As part of the application process, AACOMAS recalculates your GPA from scratch using every college-level transcript you submit, regardless of what institution you attended.
The reason for this recalculation is fairness. Universities have different grading curves, repeat-course policies, and even different definitions of what constitutes a passing grade. AACOMAS strips all of those institutional differences away and applies a single unified standard — the 4.0 scale — to every applicant. The result is three GPA figures that appear on every DO program application you submit through the portal.
Science GPA
Biology, Chemistry, Physics, and Other Sciences. Does not include Mathematics.
Non-Science GPA
Mathematics, English, Humanities, Behavioral Sciences, and Social Sciences.
Overall GPA
Every college-level credit on every transcript, averaged on a 4.0 scale.
Science GPA vs. Overall GPA: The Math Rule
The most important distinction in AACOMAS categorization — and the one that surprises most DO applicants — is that Mathematics is not considered a Science. Calculus, Statistics, Linear Algebra, and all other math courses go into your Non-Science GPA, not your Science GPA. This is the opposite of AMCAS, where Math is part of the BCPM science category.
What Counts as Science in AACOMAS?
AACOMAS has a broader science definition than AMCAS. Health-adjacent and applied sciences often qualify as science courses, whereas AMCAS may classify the same course differently.
| Category | Example Courses | AACOMAS Classification |
|---|---|---|
| Core Sciences | Biology, Inorganic Chemistry, Organic Chemistry, Biochemistry, Physics | Science GPA |
| Other Sciences | Anatomy, Physiology, Microbiology, Genetics, Neuroscience, Geology, Nutrition, Exercise Science, Nursing | Science GPA |
| Mathematics | Calculus, Statistics, Linear Algebra, Differential Equations | Non-Science GPA |
| English & Humanities | English Composition, Literature, History, Philosophy, Languages | Non-Science GPA |
| Behavioral Sciences | Psychology, Sociology, Anthropology, Economics | Non-Science GPA |
| Social Sciences | Political Science, Criminal Justice, Geography | Non-Science GPA |
When in doubt, check the AACOMAS Course Classification Guide in the applicant portal. Courses can be reclassified during transcript verification if you tag them incorrectly.
How AACOMAS Handles Repeated Courses
As of the 2017 application cycle, AACOMAS moved from grade replacement to grade averaging. Every attempt at a course is included in your GPA — the original grade is never erased.
Current Policy (post-2017): Grade Averaging
Both the original attempt and the repeat are counted. If you failed Organic Chemistry (0.0) and retook it for an A (4.0), your AACOMAS GPA reflects both grades — they do not cancel each other out.
Legacy Policy (pre-2017): Grade Replacement
The most recent attempt replaced the original. This policy no longer applies to any current AACOMAS cycle. The legacy toggle in this calculator exists for historical comparison only.
The practical implication: a retake raises your GPA by adding a strong grade to the average, but it does not erase the damage from the original poor grade. A student who earned F + A in Organic Chemistry has the same two quality-point totals averaged as a student who earned D + B+ — neither gets a clean slate. Strategic coursework planning is more valuable than hoping a retake will neutralize past performance.
Step-by-Step: How to Use This Calculator
Gather your official transcripts
Do not rely on your student portal or unofficial grade history. Use the exact credit hours and letter grades listed on each official transcript. AACOMAS will verify your entries against the originals.
Tag each course as Science or Non-Science
Assign Biology, Chemistry, Physics, Biochemistry, and Other Sciences (Anatomy, Microbiology, etc.) as Science. Assign all Mathematics, English, Humanities, Behavioral Sciences, and Social Sciences as Non-Science. When in doubt, refer to the AACOMAS Course Classification Guide.
Enter the grade and credits for each course
Use the official letter grade — A, B+, C, WF, etc. Enter the exact number of credit hours (e.g., 3.0 or 4.0). Exclude Pass (P), Satisfactory (S), and standard Withdrawal (W) grades from the GPA calculation but note them in your records.
Mark repeat attempts clearly
For any course you took more than once, enter each attempt as a separate row and toggle the 'Repeat attempt' switch on the second entry. Under current policy, all attempts are counted in the average.
Review your Science and Overall GPAs
The calculator displays your Science GPA, Non-Science GPA, and Overall GPA once you click Calculate. The breakdown table shows per-course quality points so you can identify which courses affected each GPA the most.
Worked Example: One Semester
The following example illustrates how Mathematics affects the gap between Science GPA and Overall GPA — and why a poor math grade does not hurt a DO applicant's science competitiveness the same way a poor chemistry grade would.
| Course | Credits | Grade | Points | AACOMAS Category | Quality Pts |
|---|---|---|---|---|---|
| General Biology | 4 | A | 4.0 | Science | 16.0 |
| Organic Chemistry I | 4 | B | 3.0 | Science | 12.0 |
| Calculus I | 3 | C | 2.0 | Non-Science (Math) | 6.0 |
| Psychology | 3 | A | 4.0 | Non-Science | 12.0 |
Science GPA
3.50
(16.0 + 12.0) ÷ 8 credits
Non-Science GPA
3.00
(6.0 + 12.0) ÷ 6 credits
Overall GPA
3.28
46.0 ÷ 14 total credits
The C in Calculus lowered the Overall GPA to 3.28 but had zero effect on the Science GPA (3.50). A DO admissions committee reviewing this record sees strong science performance despite a weaker math grade.
Common AACOMAS GPA Mistakes
Official AACOMAS Grade-to-Point Table
AACOMAS uses a standard 4.0 scale. Unlike LSAC, there is no A+ premium — A+ and A are both worth 4.0.
| Grade | Quality Points | Counted in GPA? |
|---|---|---|
| A+ / A | 4.0 | Yes |
| A− | 3.7 | Yes |
| B+ | 3.3 | Yes |
| B | 3.0 | Yes |
| B− | 2.7 | Yes |
| C+ | 2.3 | Yes |
| C | 2.0 | Yes |
| C− | 1.7 | Yes |
| D+ | 1.3 | Yes |
| D | 1.0 | Yes |
| D− | 0.7 | Yes |
| F | 0.0 | Yes |
| WF (Withdrawal Failing) | 0.0 | Yes — counted as F |
| W (Withdrawal) | — | No — excluded |
| WP (Withdrawal Passing) | — | No — excluded |
| P / S / CR (Pass) | — | No — excluded |
| I (Incomplete) | — | No — excluded unless converted |
Frequently Asked Questions
Frequently Asked Questions
Next Steps After Calculating Your AACOMAS GPA
Your estimated AACOMAS GPA is a planning tool — use it to make strategic decisions well before the application cycle opens.
AMCAS GPA Calculator
AvailableAlso applying to MD programs? Calculate your BCPM Science GPA using the AMCAS scale — note that Math moves to science in AMCAS.
LSAC GPA Calculator
AvailableApplying to law school? The LSAC uses a 4.33 scale and counts all repeat attempts, producing a unique GPA separate from AACOMAS.
Professional School GPA Hub
Compare LSAC, AMCAS, AACOMAS, and CASPA side-by-side and find the right calculator for every program you are applying to.
Saved Scenarios
Save different course plans as separate scenarios — compare 'retake strategy' vs. 'post-baccalaureate' to see which improves your GPA more.