To calculate your GPA, turn each letter grade into grade points (on the common US 4.0 scale A = 4.0, B = 3.0, C = 2.0, D = 1.0, F = 0), multiply each by the course's credit hours, add those quality points together and divide by your total credits. For example, an A in a 3-credit class, a B+ in a 4-credit class and a C in a 2-credit class give (12 + 13.2 + 4) ÷ 9 = 3.24. A weighted GPA adds extra points for honors, AP or IB classes, and a cumulative GPA does the same sum across every term.
- GPA = total quality points ÷ total credits, where quality points = grade points × credits.
- The most common scale: 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.
- Weighted GPA usually adds 0.5 for honors and 1.0 for AP or IB classes, so it can go above 4.0.
- Cumulative GPA is not the average of your semester GPAs: it weights every term by its credits.
- Schools set their own rules. Check your school's handbook or registrar for the exact scale.
What GPA means
GPA stands for grade point average. It turns your letter grades into one number, usually on a scale from 0 to 4.0, so that grades from different classes, terms and schools can be summarised and compared. High schools use it for class rank and honors, colleges use it in admissions and for scholarships, academic standing and graduation honors, and some employers ask for it on applications for early-career jobs.
GPA is mostly an American system. Other countries grade differently (the UK uses degree classifications, India often uses a 10-point CGPA, much of Europe uses national scales), and there is no single official way to convert between them. This guide covers the US 4.0 scale.
The 4.0 grade scale
Most US high schools and colleges map letters to points like this. Plus and minus grades usually move the value by about a third of a point:
| Letter grade | Grade points | Notes |
|---|---|---|
| A+ | 4.0 | Some colleges award 4.3 |
| A | 4.0 | |
| A− | 3.7 | |
| B+ | 3.3 | |
| B | 3.0 | A "B average" is a 3.0 GPA |
| B− | 2.7 | |
| C+ | 2.3 | |
| C | 2.0 | Often the minimum for good academic standing |
| C− | 1.7 | |
| D+ | 1.3 | |
| D | 1.0 | |
| D− | 0.7 | |
| F | 0.0 | Counts in the GPA with zero points |
Variations are common: some schools do not use plus and minus grades at all, some do not give an A+, some use A− = 3.67 and B+ = 3.33, and the percentage needed for each letter differs from school to school (many high schools use 90–100 for an A, but not all). The calculation method below works with any of these scales once you know your school's numbers.
How to calculate your GPA step by step
- List your classes with the letter grade and the number of credits (credit hours or units) for each. In many US colleges a typical lecture class is 3 credits; in high school a full-year class is often 1 credit.
- Convert each grade to points with the scale above.
- Multiply points by credits for each class. The result is called quality points (or grade points earned).
- Add up the quality points and add up the credits.
- Divide total quality points by total credits. Round to two decimals, as most transcripts do.
Worked example
| Class | Grade | Points | Credits | Quality points |
|---|---|---|---|---|
| Biology | A | 4.0 | 3 | 12.0 |
| Calculus | B+ | 3.3 | 4 | 13.2 |
| History | C | 2.0 | 2 | 4.0 |
| Total | 9 | 29.2 |
GPA = 29.2 ÷ 9 = 3.244…, which rounds to 3.24. Notice that the 4-credit B+ pulls more weight than the 2-credit C. If you simply averaged the three grade points, (4.0 + 3.3 + 2.0) ÷ 3, you would get 3.10, which is wrong whenever classes have different credits.
The GPA calculator does these steps for you, shows the quality points and works out weighted and cumulative GPA as well.
Weighted vs unweighted GPA
An unweighted GPA uses the plain 4.0 scale for every class, so an A is worth 4.0 whether it was in a regular class or an Advanced Placement one. It is simple and easy to compare.
A weighted GPA rewards harder classes. Many high schools add 0.5 points for honors classes and 1.0 point for AP, IB or dual-enrollment college classes, so an A in an AP class counts as 5.0 and a B as 4.0. Because of this, weighted GPAs can go above 4.0 and are often described as being "on a 5.0 scale". A failing grade normally gets no bonus.
Weighted example
Take the same three classes, but say Calculus was an AP class. Its B+ now counts as 3.3 + 1.0 = 4.3, so its quality points rise to 4.3 × 4 = 17.2. Weighted GPA = (12 + 17.2 + 4) ÷ 9 = 33.2 ÷ 9 = 3.69, while the unweighted GPA stays 3.24.
Which one matters?
Both appear on many high school transcripts. Colleges see your transcript and your school's profile, so they know how hard your classes were, and many colleges recalculate applicants' GPAs with their own rules, for example counting only core academic subjects or applying their own weighting. That is why a weighted GPA of 4.4 at one school and 4.4 at another may not mean the same thing. When a form asks for your GPA, give the figure in the form it requests (weighted or unweighted) and the scale it is on.
Semester GPA and cumulative GPA
Your semester (or term) GPA covers one term. Your cumulative GPA covers every class you have taken at that school. To find it, add the quality points from all terms and divide by all the credits, or use this shortcut when you know your previous GPA:
New cumulative GPA = (previous GPA × previous credits + this term's quality points) ÷ (previous credits + this term's credits)
Example: you have a 3.50 GPA over 30 credits and this term earned 29.2 quality points over 9 credits (the 3.24 term above). (3.50 × 30 + 29.2) ÷ (30 + 9) = (105 + 29.2) ÷ 39 = 134.2 ÷ 39 = 3.44.
Do not average semester GPAs directly: a 4.0 summer term with 3 credits should not count as much as a 3.0 fall term with 15 credits. The weighted formula above handles that automatically.
How much can one term change your GPA?
The more credits you already have, the harder your cumulative GPA is to move. With 60 credits at a 3.00, a perfect 4.0 term of 15 credits lifts you to (180 + 60) ÷ 75 = 3.20. With 120 credits at 3.00, the same perfect term only gets you to (360 + 60) ÷ 135 = 3.11. Early terms matter a lot, which is why it pays to protect your GPA in your first year.
To find the GPA you need on your remaining credits to reach a target, rearrange the formula: required GPA = (target × total credits at the end − current GPA × current credits) ÷ remaining credits. If the answer is above 4.0 (or your school's maximum), the target is out of reach in that time.
Pass/fail, withdrawals and repeated classes
- Pass/fail (P/NP, S/U, credit/no credit): usually earns credits toward graduation but is left out of the GPA. At some schools a failing grade in a pass/fail class still counts as an F, so check.
- Withdrawals (W): normally appear on the transcript but do not affect the GPA.
- Incomplete (I): no effect until it turns into a final grade.
- Repeated classes: policies differ. Some schools replace the old grade with the new one, some average both, and some count both attempts.
- Transfer credits: often count toward your degree but not your GPA at the new school.
What is a good GPA?
It depends on what it is for. A 3.0 means a B average and is a common minimum for scholarships, honor societies and some graduate programs; a 2.0 (C average) is often the minimum for good academic standing in college. Highly selective colleges and programs typically see applicants with grades mostly in the A range, but they also weigh the difficulty of your classes, test scores where used, essays and activities. Treat any "good GPA" number as a rough guide, not a rule.
Tips for getting your GPA right
- Use the credits printed on your transcript or course catalog, including decimals such as 0.5 or 1.5.
- Check whether your school gives A+ more than 4.0 and how it weights honors and AP classes.
- Keep weighted and unweighted figures separate when you combine terms.
- Your official GPA is the one on your transcript. Calculators, including ours, are for planning and checking.
Need other quick sums? The percentage calculator turns scores into percentages, and the scientific calculator handles anything else. More helpers are in everyday tools.
Frequently asked questions
How do I calculate my GPA?
Convert each letter grade to points (A = 4, B = 3, C = 2, D = 1, F = 0, with plus and minus grades in between), multiply by the class credits, add the results and divide by the total credits.
What is the difference between weighted and unweighted GPA?
Unweighted GPA uses the same 4.0 scale for every class. Weighted GPA adds bonus points for harder classes, commonly 0.5 for honors and 1.0 for AP or IB, so it can exceed 4.0.
How do I calculate my cumulative GPA?
Multiply your previous GPA by your previous credits, add this term's quality points, and divide by your total credits. For example (3.50 × 30 + 29.2) ÷ 39 = 3.44.
Is an A+ worth more than 4.0?
At most high schools and many colleges an A+ is worth 4.0, the same as an A. Some colleges give it 4.3. Check your school's grading policy.
Do pass/fail classes count toward GPA?
Usually not: a pass earns credits but no grade points, so it does not change your GPA. Some schools count a failed pass/fail class as an F.
Is a 3.5 GPA good?
A 3.5 is between a B+ and an A− average and is above the 3.0 cut-off many scholarships and programs use. Whether it is competitive depends on the college or program and on how demanding your classes were.