GPA calculator: unweighted and weighted, 4.0 scale

This term

Term name

Class 1 name
Class 1: Grade
Class 1: Credits
Class 1: Level
Class 2 name
Class 2: Grade
Class 2: Credits
Class 2: Level
Class 3 name
Class 3: Grade
Class 3: Credits
Class 3: Level
Class 4 name
Class 4: Grade
Class 4: Credits
Class 4: Level
Class 5 name
Class 5: Grade
Class 5: Credits
Class 5: Level

Weighting and scale settings

Honors adds

AP / IB / dual enrollment adds

Points added on the weighted scale, 0 to 2. Most schools use 0.5 and 1.0. An F gets no bonus.

My school counts A+ as 4.3

Unweighted GPA

3.44

Weighted GPA

3.78

5 classes, 4.5 credits.

Unweighted: (3.7 x 1 + 3.3 x 1 + 3 x 1 + 4 x 1 + 3 x 0.5) / 4.5 credits = 15.5 / 4.5 = 3.44

Weighted: (3.7 x 1 + 3.8 x 1 + 4 x 1 + 4 x 1 + 3 x 0.5) / 4.5 credits = 17 / 4.5 = 3.78

Nothing is saved until you edit. Then it stays in this browser only.

How GPA is calculated

Each letter grade is worth a number of points on the 4.0 scale. A class worth more credits counts more, so you multiply its points by its credits. Those products are called quality points. Add them up and divide by the total credits.

\text{GPA} = \frac{\sum (\text{points} \times \text{credits})}{\sum \text{credits}}

A weighted GPA adds a bonus to harder classes before you multiply: by default +0.5 for Honors and +1.0 for AP, IB and dual enrollment, so an A in an AP class counts 5.0. Your school may use other numbers, so you can change both bonuses in the calculator's settings. A cumulative GPA pools every class from every term into one sum. It is not the average of your term GPAs.

The 4.0 grade scale

The common high school 4.0 scale. Percent ranges are typical; check your school's handbook.
Letter	Typical percent	Points	Honors	AP, IB, dual enrollment
A+	97 to 100	4.0	4.5	5.0
A	93 to 96	4.0	4.5	5.0
A-	90 to 92	3.7	4.2	4.7
B+	87 to 89	3.3	3.8	4.3
B	83 to 86	3.0	3.5	4.0
B-	80 to 82	2.7	3.2	3.7
C+	77 to 79	2.3	2.8	3.3
C	73 to 76	2.0	2.5	3.0
C-	70 to 72	1.7	2.2	2.7
D+	67 to 69	1.3	1.8	2.3
D	63 to 66	1.0	1.5	2.0
D-	60 to 62	0.7	1.2	1.7
F	below 60	0.0	0.0	0.0

Worked examples

Example 1: one term, unweighted

Problem English A (1 credit), Algebra 2 B+ (1 credit), Biology A- (1 credit), Spanish B (0.5 credit). What is the GPA?

Turn each grade into points and multiply by its credits.
$4.0 \times 1 + 3.3 \times 1 + 3.7 \times 1 + 3.0 \times 0.5 = 12.5$
Add the credits.
$1 + 1 + 1 + 0.5 = 3.5$
Divide quality points by credits.
$\frac{12.5}{3.5} = 3.571\ldots$

Answer Unweighted GPA 3.57

Example 2: two terms, weighted and cumulative

Problem Fall: AP US History B, Honors Chemistry A-, English A (1 credit each). Spring: AP Calculus B+ (1 credit), PE A (0.5 credit). Find the cumulative GPA, unweighted and weighted.

Unweighted quality points. Fall is 3.0 + 3.7 + 4.0 = 10.7; spring is 3.3 + 4.0 x 0.5 = 5.3.
$10.7 + 5.3 = 16.0$
Weighted points add 1.0 to each AP grade and 0.5 to the Honors grade.
$(4.0 + 4.2 + 4.0) + (4.3 + 4.0 \times 0.5) = 18.5$
Divide both by all 4.5 credits.
$\frac{16.0}{4.5} = 3.56 \qquad \frac{18.5}{4.5} = 4.11$
Averaging the two term GPAs instead, $\frac{3.57 + 3.53}{2} = 3.55$ , is slightly off, because spring has fewer credits. Always pool the credits.

Answer Cumulative GPA 3.56 unweighted, 4.11 weighted

Weighted or unweighted: which one counts?

Your transcript may show one or both. Colleges see the GPA your school reports, and many recalculate it their own way so students from different schools can be compared, for example by removing the Honors and AP bonus. Knowing both numbers tells you where you stand either way.

Frequently asked questions

Is an A+ worth 4.0 or 4.3?

On the common high school scale an A+ is 4.0, the same as an A. Some schools and many colleges count it as 4.3. Check your school's handbook, and turn on the A+ setting in the calculator if your school uses 4.3.

How do I calculate cumulative GPA?

Add up the quality points (points times credits) from every class in every term, then divide by all the credits. Do not average your term GPAs: a short summer term would count as much as a full year. Use "Add term" in the calculator and it pools them for you.

What do Honors and AP add to a weighted GPA?

Most schools add 0.5 points for Honors and 1.0 point for AP, IB and dual enrollment classes, so an A in AP counts 5.0. Some schools use other bonuses or cap the weighted GPA. Both bonuses are editable in the calculator's settings.

How many credits is a class?

In most high schools a full year class is 1 credit and a semester class is 0.5. If you enter grades one semester at a time, give every class the same credits. In college, use the credit hours on your transcript, often 3 or 4.

Does this calculator save my grades?

Only in your own browser. Nothing is sent anywhere and there is no sign-in. After you edit, your classes stay on this device so you can come back next term. Press "Clear all" to remove them, for example on a shared Chromebook.

Sources

College Board BigFuture: How to convert your GPA to a 4.0 scale, accessed October 1, 2026