How unweighted GPA works
Unweighted GPA treats every class the same. A in AP Calculus = A in regular gym = 4.0 quality points. That removes any difference in course difficulty from the formula — the only inputs are your grades and credit hours.
Unweighted GPA uses a flat 4.0 scale where every course counts equally regardless of difficulty. A=4.0, B=3.0, C=2.0, D=1.0, F=0.0. Course rigor (AP, Honors, IB) doesn't change the grade points.
- Maximum value
- 4.0
- AP class boost
- None — same as regular
- Used by
- Most US colleges, transcripts, scholarships
- Common scale variants
- Standard 4.0, plus/minus 4.0, 4.3 with A+
unweighted GPA = Σ(grade_point × credits) / Σ(credits) A → 4.0 A- → 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 F → 0.0
Unweighted vs weighted — when each one matters
Most selective US colleges re-derive your GPA on a single unweighted baseline so applicants from differently-weighted schools can be compared on equal footing, then weigh course difficulty as a separate signal. That makes unweighted the apples-to-apples number; the weighted GPA reflects ambition. Some scholarships, class rank, and valedictorian calculations still run on weighted figures, so it pays to know both. The AP GPA Calculator and Honors GPA Calculator cover the bonus side.
What if your school uses a different scale?
Schools outside the US (and a few US programs) report grades in percentages, on a 10-point scale, or on a 100-point scale. The Percentage to GPA Converter maps any percentage to a 4.0 letter grade. If your transcript doesn't list credits at all, the GPA Calculator without Credits treats every class equally. For middle school transcripts that haven't introduced credit hours yet, the Middle School GPA Calculator uses the same simplified approach.
Common mistakes that inflate or deflate the number
- Adding AP/Honors bonuses anyway. Unweighted is unweighted — the bonus belongs only on weighted.
- Using A+ = 4.3. Most US schools cap at 4.0 even with an A+. Check your transcript legend.
- Counting pass/fail courses. Pass/no-pass classes typically don't enter the GPA.
- Mixing semester and year grades. Pick one — most schools report semester grades into GPA.
- Forgetting credit hours. A heavier 4-credit course pulls on your average far more than a 1-credit elective.
Source: NCES — US grading scale standards
Source: College Board — how admissions offices recalculate GPA
Source: NACAC State of College Admission — GPA importance in admissions decisions