Weighted GPA is a local formula
A weighted GPA adds or assigns different grade-point values to courses identified by a particular authority. There is no single U.S. weighted-GPA table. The school or district decides which records count, which course labels receive weight, how much they receive, and whether the result is capped or rounded.
The calculator can reproduce a rule you enter. It cannot discover or certify the rule.
Build a policy card before entering grades
Copy these fields from the current handbook, school profile, transcript legend, or registrar page:
| Field | What to record |
|---|---|
| Authority | School or district that calculates the transcript GPA |
| Effective period | School year, graduating cohort, or transition rule |
| Course population | Included grade levels, courses, repeats, and non-letter records |
| Base table | Exact points for every grade, including plus/minus |
| Eligible designations | Exact codes or course list for Honors, AP, IB, DE, or other tiers |
| Weight | Additive points or category values by grade |
| Limits | Bonus caps, grade restrictions, or course-count limits |
| Denominator | Courses, credits, semesters, or another published unit |
| Precision | Rounding method and decimal places |
| Rank | Whether rank exists and which separate calculation it uses |
If any required field is missing, label the result a planning estimate.
Worked policy example: FCPS
Fairfax County Public Schools currently publishes a base table with A=4.0, A−=3.7, and B+=3.3. Designated Honors courses receive 0.5 additional quality points; designated AP, Advanced, Dual Enrollment, and IB courses receive 1.0.
That makes +0.5 and +1.0 valid FCPS values, not national defaults. FCPS also states which high-school courses enter its GPA and that FCPS high schools do not rank students.
For three equal-credit FCPS-designated records—standard A, Honors B+, and AP B—the arithmetic is:
- Standard A: 4.0
- Honors B+: 3.3 + 0.5 = 3.8
- AP B: 3.0 + 1.0 = 4.0
- Check:
(4.0 + 3.8 + 4.0) ÷ 3 = 3.933...
Use the school's stated precision for the final display. Do not transfer this table to another district.
Course label, transcript weight, and college credit are separate
College Board's AP Course Audit governs authorization to use the AP designation on a transcript. It does not set the high school's GPA bonus. A target college separately decides whether an AP exam score earns credit or placement.
For each advanced course, verify three different facts:
- Is the course authorized to use the designation?
- How does the student's school weight that course, if at all?
- What does the target college do with the exam result?
The same separation applies to IB. IB states that it does not provide or endorse a universal IB-to-U.S.-grade or IB-to-4.0 conversion. Preserve the original IB result unless a named school or recipient publishes a rule.
Admission calculations may use a different population
The University of California calculates a specific UC admission GPA from defined A–G courses and grade levels. Eligible honors points have caps and resident/nonresident rules. This is not the student's general transcript weighted GPA.
Keep a separate label for every calculation:
- school-reported GPA;
- your check under the school policy; and
- recipient-calculated admission GPA.
For reporting guidance, see should you report weighted or unweighted GPA. For a same-course comparison, see weighted vs unweighted GPA.
Common policy-entry errors
- assuming a 5.0 label defines AP and Honors bonuses;
- applying an AP bonus to a locally named “advanced” course without checking eligibility;
- converting IB grades through a generic table;
- using a college credit-hour formula for a high-school GPA without evidence;
- treating an admission GPA as the transcript GPA;
- rounding each course before the policy says to round; or
- assuming a weighted GPA is used for class rank.
FAQ
Is Honors always worth 0.5 and AP always worth 1.0?
No. Those increments appear in named policies such as FCPS, but they are not universal defaults.
Is unweighted GPA always on a 4.0 scale?
Unweighted means a formula does not add course-level weight. The scale and grade table still belong to the calculating authority.
Can I use an IB-to-GPA chart?
Not as a universal official conversion. IB expressly does not endorse one U.S. conversion table. Use a named recipient's current rule if it publishes one.
Does weighted GPA determine admission?
No single cross-school claim is justified. Institutions define their own reporting and review practices; read the current policy for each target.
How do I know whether my result is official?
Compare it with the transcript and policy for the correct year. A calculator result remains an estimate when any formula field is missing or unsupported.