High School GPA Calculator
This high school GPA calculator mirrors how most high schools report grades — straight A through F letters, equal weight per class, one semester at a time. Pick each class’s letter grade for up to six courses and get your semester GPA instantly. No plus/minus fuss, no credit-hour math: just the number colleges see on your transcript summary.
Semester letter grade for this class.
Semester letter grade for this class.
Semester letter grade for this class.
Semester letter grade for this class.
Semester letter grade for this class.
Semester letter grade for this class.
Semester GPA
3.33
- GPA (4.0 scale)
- 3.333
- Classes counted
- 6
- Total grade pointsSum of A=4, B=3, C=2, D=1, F=0.
- 20
- Grade mix3×A, 2×B, 1×C.
- 6
How it was calculated
- Points: A=4, A=4, B=3, C=2, B=3, A=4.
- GPA: 20 ÷ 6 = 3.333.
How it works
Each class maps to whole points — A = 4, B = 3, C = 2, D = 1, F = 0 — and the GPA is the plain average of those six numbers.
Straight letters (no plus/minus) match how most US high schools record semester grades, which is why this calculator skips the in-between values colleges use.
Because every class counts equally, raising any single grade by one letter (say C to B) always lifts the GPA by the same amount: 1 ÷ 6 ≈ 0.167.
Worked examples
A, A, B, C, B, A
Points: 4 + 4 + 3 + 2 + 3 + 4 = 20; 20 ÷ 6 = 3.333 GPA. The single C costs 0.167 compared with a B there.
Straight-A semester
Six As = 24 points ÷ 6 = 4.000 GPA — the ceiling on the unweighted scale. One B would drop it to 3.833.
How to measure
- Use the semester letter on the report card, not the running percent in the gradebook portal.
- If your school reports plus/minus (B+), either round to the straight letter your transcript shows or use the standard GPA Calculator.
- Count each semester separately — fall and spring are two GPAs, later combined with the CGPA Calculator.
- Exclude pass/fail electives and audited classes; they do not factor into GPA.
- For weighted (honors/AP) versions of this, use the Weighted GPA Calculator instead.
Assumptions & limitations
Planning estimate
- Straight letter grades only (A–F); plus/minus granularity is intentionally not modeled here.
- Every class carries equal weight — semester electives count the same as year-long core classes in this math.
- Unweighted 4.0 scale with a 4.0 ceiling; honors/AP bonuses are not applied.
- One semester at a time; cumulative GPA across semesters needs the CGPA Calculator.
Frequently asked questions
Most convert each semester letter to points (A = 4, B = 3, C = 2, D = 1, F = 0) and average them. With grades of A, A, B, C, B, A that is 20 ÷ 6 = 3.33. Schools with plus/minus or weighted honors systems adjust the point values.
It varies widely: community colleges often admit at any GPA, state universities commonly look for 2.5–3.0+, and selective schools typically want 3.7+. Admissions also weigh course rigor, trends, and test scores alongside the number.
Yes — it counts in your cumulative GPA exactly like any other year. An upward trend helps, but early grades are never erased, so strong freshman and sophomore years build a cushion for tougher junior-year courses.
Unweighted caps at 4.0 with straight letters, which is what this calculator does. Weighted adds bonuses for honors/AP classes on a 5.0 scale. Colleges often recalculate both to their own standard, so report whichever your transcript shows.
On a six-class semester, each letter step is worth 1 ÷ 6 ≈ 0.167 GPA points. One B among As gives 3.833 instead of 4.000. The damage shrinks as you accumulate more semesters in the cumulative average.