Unweighted GPA: How to Calculate It

To calculate an unweighted GPA, assign each course a grade-point value on a common scale, add those points, and divide by the number of courses included. Enter the grade points for each class in the calculator to get the average; the example uses the usual 4.0 scale, where an A is 4 points and a B is 3.

Formula

Unweighted GPA = total grade points ÷ number of courses counted, or, in symbols, GPA = (p₁ + p₂ + … + pₙ) ÷ n.

• p₁, p₂, …, pₙ: the grade-point value for each included course, in points. Convert letter grades using the scale specified by the school; on the common 4.0 scale, an A is usually 4, a B 3, a C 2, a D 1, and an F 0.
• n: the number of courses included in the calculation, counted as courses.
• GPA: the arithmetic average of the included grade points, expressed in points on the chosen scale.

The calculator accepts a list of grade-point numbers rather than letter grades, so convert each grade first. It gives every listed course equal weight. Its default list assumes five equally weighted courses with points of 4, 3, 3, 2, and 4.

Worked Example

Using the calculator’s exact defaults:

1. Course grade points: 4, 3, 3, 2, 4.
2. Add the points: 4 + 3 + 3 + 2 + 4 = 16.
3. Count the courses: n = 5.
4. Divide: 16 ÷ 5 = 3.2.

The unweighted GPA is 3.20 points when rounded to two decimal places. The calculator also reports 16.00 total grade points and 5 courses.

What Unweighted GPA Means

An unweighted GPA is an average that does not add extra points because a course is labeled honors, Advanced Placement, International Baccalaureate, or otherwise advanced. If two courses receive the same grade, each contributes the same grade-point value under the scale being used, regardless of course difficulty.

“Unweighted” does not mean every school uses exactly the same scale or calculation rules. One school might use plus and minus grades, such as A− = 3.7 and B+ = 3.3; another may use whole-number points. Schools can also differ in whether they count particular classes, repeat grades, or use semester versus final grades. Therefore, a result based on the common 4.0 scale is a useful estimate, but it may not match a school’s official GPA.

How to Calculate Your GPA

1. Choose the right grades. Use the grades and time period requested, such as a term, a school year, or all high-school courses. Do not mix term grades with final course grades.
2. Find the applicable scale. Check the school’s grading information for the point value of each letter grade, including plus and minus grades if applicable.
3. Convert each grade to points. For example, on the common whole-number 4.0 scale, an A becomes 4 points, a C becomes 2, and an F becomes 0.
4. Add the grade points. Keep a record of which courses the total includes.
5. Divide by the number of included courses. Round only the final result, using the precision requested by the school or application.

For instance, a 4-point A, a 3-point B, and a 2-point C total 9 points. If those are the only three equally weighted courses, the GPA is 9 ÷ 3 = 3.00.

Courses, Credits, and Different Scales

The simple average is appropriate when each course counts equally. Some schools instead calculate GPA using course credits or units, so a longer course contributes more than a shorter one. In that case, use a credit-weighted calculation: multiply each course’s grade points by its credits, add those products, then divide by the total credits.

For example, a 4-point grade in a 1-credit course and a 3-point grade in a 2-credit course produce (4 × 1 + 3 × 2) ÷ (1 + 2) = 10 ÷ 3, or 3.33. This differs from the simple two-course average of 3.50. Use the method the school specifies; do not apply credit weighting just because a course seems harder.

Scales also affect comparisons. A GPA of 3.5 on a plus/minus scale may not represent precisely the same grades as a 3.5 on a whole-number scale. A weighted GPA can exceed 4.0 when a school adds points for selected courses, but this calculator does not add those points. Do not compare GPAs without checking their scales, included courses, and weighting rules.

Common Mistakes and Limits

• Using the wrong conversion: An A− may be 3.7, 3.67, or another value under local rules; it is not automatically 4.0.
• Counting courses inconsistently: Including a repeated course, pass/fail class, or incomplete grade can change the result. Follow the school’s policy rather than guessing.
• Confusing weighted and unweighted GPA: An unweighted calculation does not add an honors or advanced-course bonus.
• Rounding too early: Keep the grade-point values as given and round only the final average. Premature rounding can produce a slightly different answer.
• Assuming the result is official: The calculator averages the numbers entered. It cannot determine a school’s rules or verify whether a transcript uses semester grades, credits, exclusions, or repeats.

Use this calculator for an equal-course average when you know the grade-point values. If the school publishes a specific GPA method, its method takes precedence. The calculation is an arithmetic average, not a conversion that makes grading systems universally comparable.

Frequently Asked Questions

What is the formula for unweighted GPA?
Add the grade points for all included courses and divide by the number of courses. If courses have different credit weights under school rules, use grade points multiplied by credits and divide by total credits instead.

Is an unweighted GPA always out of 4.0?
No. A 4.0 scale is common, but schools may use other scales or distinct values for plus and minus grades. Check the scale behind the GPA before interpreting it.

Does an honors class count more in an unweighted GPA?
No. Unweighted GPA does not grant extra points for course level. The grade is converted using the applicable scale just like the grade in another course.

Do I count every class?
Count the courses included by the rules for the GPA you are calculating. Schools may treat pass/fail courses, repeated classes, incomplete grades, and courses without standard letter grades differently.

How do I calculate GPA with credits?
Multiply each course’s grade points by its credit value, add the results, then divide by the total credits. Use this approach only if the school’s GPA rules call for credit weighting.

Why does my calculated GPA differ from my transcript?
The school may use a different grade scale, credit weights, course exclusions, repeated-course rules, or unrounded values. Compare the inputs and method with the school’s published calculation policy.

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list grades | Course grade points | 4, 3, 3, 2, 4
out gpa | Unweighted GPA | points | mean(grades) | 2
out total | Total grade points | points | sum(grades) | 2
out courses | Courses counted | courses | count(grades) | 0