Calculate your GPA using a simple average — no credit hours needed. Perfect when you don't know your credits or your school weights all courses equally.
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5 courses · Click grade to pick · Tap credits to assign
All 4 years, no AP/Honors weight. Universal baseline.
Honors +0.5, AP/IB +1.0. Standard high school method.
Sophomore & Junior years only. Max 8 honors semesters.
10th–11th, no PE/arts, flattens +/− grades.
All 4 years. A−/A/A+ all equal 4.0. Rigor noted separately.
Core subjects (Eng, Math, Sci, Social Studies, FL) with weighting.
Not every school uses credit hours. Many high schools, particularly those on a semester or trimester system, treat every class as equal weight. If your school doesn't list credit hours on your transcript, or if every class meets for the same amount of time, a simple average is the right approach.
This calculator is also useful when you want a quick estimate. If you don't have your transcript handy and just want to plug in your letter grades to see where you stand, the simple average gives you a solid approximation without needing to look up credit values.
International students often use this approach as well. Grading systems outside the US may not have a credit-hour equivalent, so converting letter grades to a 4.0 scale and taking the simple average is the most straightforward way to estimate a US-style GPA.
In a simple average, every course counts equally toward your GPA. An A in a PE class and an A in AP Physics both contribute 4.0 equally. In a credit-weighted system, the AP Physics course (typically 4–5 credits) would count more than PE (usually 0.5–1 credit).
The difference between the two calculations is usually small — typically within 0.1–0.2 points — when most of your courses carry similar credit hours. The gap widens when you have a mix of high-credit and low-credit courses with very different grades.
For most students estimating their GPA, the simple average is accurate enough. If you need precision for college applications, check your transcript for credit hours and use the credit-weighted calculation.
Many school systems around the world don't use the American credit-hour system. British, Australian, Canadian, and many Asian school systems use different frameworks for measuring course weight. If you're trying to convert your grades to a US-style GPA, the simple average method is your best starting point.
Some American high schools also use a simplified system where every class counts equally regardless of meeting time. Block-schedule schools, for example, may treat each block as one course regardless of whether it's a 45-minute or 90-minute period.
If you're unsure whether your school uses credits, check your transcript or report card. If you see a "credits" or "credit hours" column, your school uses weighted averaging. If not, the simple average is appropriate.
With a simple average, every single grade has equal impact. If you have 6 courses per semester, each course accounts for roughly 16.7% of your semester GPA. This means one D in any class — even a "minor" elective — can drop your GPA by 0.5 points.
The flip side is also true: improving any one grade has the same impact regardless of the course. Raising a B to an A in study hall has the same GPA effect as raising a B to an A in calculus. This makes a simple-average GPA easier to improve strategically.
To estimate the impact of changing one grade: divide 1 by your total number of courses. That's how much each letter grade change (e.g., B to A = +1.0 point) moves your GPA. With 7 courses, each grade point change moves your GPA by about 0.14.
Convert each letter grade to grade points (A=4.0, B=3.0, C=2.0, D=1.0, F=0.0), add them all up, and divide by the number of courses. This gives you a simple average GPA. For example, if you have grades of A, A, B, B, A, C across 6 courses: (4+4+3+3+4+2) ÷ 6 = 3.33 GPA.
It's slightly less precise than a credit-weighted GPA, but the difference is usually within 0.1–0.2 points. If most of your courses carry similar credit hours (which is common in high school), the simple average is a very close approximation.
Colleges will recalculate your GPA from your transcript regardless of how your school calculates it. When colleges see your transcript, they apply their own methodology. The GPA you self-report is used for initial screening, and the simple average is acceptable for that purpose.
If your school uses percentages, convert them to letter grades first: 90–100% = A, 80–89% = B, 70–79% = C, 60–69% = D, below 60% = F. For plus/minus distinctions, use: A+ = 4.0, A = 4.0, A- = 3.7, B+ = 3.3, and so on.
If you know the credit hours for most of your courses, use the standard credit-weighted GPA calculator for the most accurate result. If you only know credit hours for some courses, the simple average across all courses is more consistent than mixing methods.
Compare your GPA across 6 college admission methods side-by-side.
Calculate your high school GPA on the 4.0 unweighted and 5.0 weighted scale. See how AP, Honors, and IB affect your GPA for college admissions. Free.
Calculate your college GPA by semester or cumulatively. Understand credit hours, Dean's List requirements, and how your GPA affects grad school applications. Free tool.
Calculate your weighted GPA on a 5.0 scale. See how AP, Honors, IB, and Dual Enrollment boost your GPA. Compare weighted vs unweighted side-by-side.
Use your calculated GPA to explore colleges that fit your academic profile and plan your admissions timeline.