How to Calculate GPA

Calculating GPA takes five steps and one division, once you know the US 4.0 scale. Convert each letter grade to points, multiply by the course credit hours, add up all the grade points, add up all the credits, and divide. The free GPA calculator above does all five steps instantly, and this page walks through them by hand, with a worked term, a cumulative example, and the tables you need.

You need to know how to calculate GPA when you check your standing, plan next term, or fill in an application that asks for a number you have not worked out yet. A student with 15 credits and 53.25 grade points has a 3.55 GPA, and a student with 10 credits and 31 grade points has a 3.10 GPA. The examples below show the arithmetic for both, so you can follow the steps with your own grades and confirm the number before you report it.

What Is GPA on the US 4.0 Scale

GPA, or grade point average, is a single number that summarises your grades, and in the United States it is measured on a 4.0 scale. Each letter grade is worth a set number of points: an A is 4.0, a B is 3.0, a C is 2.0, a D is 1.0, and an F is 0.0, with plus and minus grades worth a third of a point more or less, so an A-minus is 3.7 and a B-plus is 3.3. Your GPA is the average of those points, weighted by the credit hours of each course. A student with all As has a 4.0, a student with all Bs has a 3.0, and most students fall somewhere in between.

This page uses the US 4.0 scale only. Some schools use a weighted scale, where honours courses add 0.5 points and Advanced Placement and International Baccalaureate courses add 1.0 point, so an A in an AP course can be worth 5.0 instead of 4.0. The calculator above supports both: choose Unweighted for the standard 4.0 scale, or Weighted for the honours and AP bonus. Your school’s own scale is the final authority, so check your handbook or transcript if your grades use a different system, and use the grade calculator for the score behind any single course grade.

Step-by-step: how to calculate GPA

1. Convert each grade to points. Use the table below: an A is 4.0, an A-minus is 3.7, a B-plus is 3.3, a B is 3.0, and so on down to an F at 0.0.
2. Multiply points by credit hours. A 3-credit course with an A is worth 4.0 times 3, which is 12 grade points. A 4-credit course with a B is worth 3.0 times 4, which is 12 points too.
3. Add up all the grade points. Total the points from every course in the term or period you are measuring.
4. Add up all the credit hours. Total the credits from the same courses.
5. Divide points by credits. The result is your GPA. For example, 53.25 grade points divided by 15 credits is a 3.55 GPA.

The GPA Formula

The GPA formula is a weighted average: GPA equals total grade points divided by total credit hours. Total grade points is the sum, over every course, of the grade points for that course multiplied by its credit hours. That weighting matters, because a 4-credit course counts more than a 2-credit course. A student who earns an A in a 2-credit course and a C in a 4-credit course does not have a 3.0 GPA, even though the average of 4.0 and 2.0 is 3.0. The correct calculation is 4.0 times 2 plus 2.0 times 4, which is 8 plus 8, which is 16 grade points, divided by 6 credits, which is 2.67.

Cumulative GPA uses the same formula over your whole academic record instead of one term. Add up all the grade points you have ever earned and divide by all the credit hours you have ever taken. That is why early grades matter: a low grade in your first term stays in the cumulative total for years, and raising it takes many later credits. The calculator above has a cumulative mode for exactly this, so you can see how a new term moves your overall number.

Worked Examples

The table below works through a 15-credit term step by step, so you can follow the same five steps with your own grades. Each row shows the conversion, the multiplication, and the running total.

Follow the five steps with this term. Step one, convert: A is 4.0, A-minus is 3.7, B-plus is 3.3, B is 3.0. Step two, multiply by credits: 4.0 times 3 is 12.00, 3.7 times 3 is 11.10, 3.3 times 4 is 13.20, 3.0 times 3 is 9.00, and 4.0 times 2 is 8.00. Step three, add the points: 53.25. Step four, add the credits: 15. Step five, divide: 53.25 divided by 15 is 3.55. That is the term GPA.

Letter Grades and Grade Points

The table below is the standard US 4.0 scale used by the calculator above. Percentage ranges vary by school, so your school may use slightly different cut-offs, but the point values are the same almost everywhere in the United States.

Unweighted vs Weighted GPA

Once you can calculate an unweighted GPA, the weighted version is one extra step. Unweighted GPA caps at 4.0 and treats every course equally, while weighted GPA adds 0.5 points for honours courses and 1.0 point for Advanced Placement and International Baccalaureate courses, so an A in an AP course is worth 5.0 instead of 4.0. The worked example in this article uses the unweighted scale; switch the calculator above to Weighted to see the same term with the bonuses applied.

Common Mistakes to Avoid

Most wrong GPA results come from a small set of slips. They are easy to make because the numbers look plausible even when they are wrong, so check your calculation against this list before you trust it.

• Averaging grades without weighting by credits. A 4-credit course counts twice as much as a 2-credit course. Always multiply points by credits before adding.
• Mixing weighted and unweighted scales. A weighted GPA can go above 4.0, while an unweighted GPA cannot. Never compare a weighted number with an unweighted one.
• Using the wrong plus and minus values. An A-minus is 3.7, not 3.5, and a B-plus is 3.3, not 3.5. The plus and minus steps are a third of a point, not a half.
• Including pass and fail courses. Pass and fail courses usually do not count toward GPA at all. Check your school’s policy before including them.
• Forgetting dropped or repeated courses. Some schools replace a repeated grade, while others average both attempts. Your transcript shows which rule your school uses.
• Rounding too early. Round only the final GPA, to two decimal places. Rounding each course’s points first shifts the result.

What Is a Good GPA

A good GPA depends on your goal. For most colleges, a 3.0 is solid, a 3.5 is strong, and a 3.7 or above is competitive for selective schools, while a 2.0 is usually the minimum to stay in good academic standing. The national average for high school students in the United States is about 3.0, and the average for college students is a little higher. What matters most is the trend: admissions officers and employers look at whether your grades are rising, and a strong recent term can outweigh a weak early one, especially when the cumulative GPA is explained in context.

• 3.7 to 4.0. Excellent. Competitive for selective colleges, honours programmes, and most scholarships.
• 3.3 to 3.6. Strong. Above average, and competitive for most colleges and many scholarships.
• 3.0 to 3.2. Solid. Around the national average, and enough for most colleges and for good academic standing.
• 2.5 to 2.9. Below average, but workable. Focus on raising the next term, since a rising trend matters.
• Below 2.0. At risk. Most schools put students below 2.0 on academic probation, so talk to an adviser early.

Tips for Raising Your GPA

A few habits move a GPA more than any calculator trick, because GPA is a weighted average and every credit counts.

1. Protect the high-credit courses. A 4-credit course moves your GPA twice as much as a 2-credit course, so put your best effort where the credits are.
2. Fix one grade at a time. Raising a single C to a B in a 3-credit course adds 3 grade points, which lifts a 15-credit term GPA by 0.20.
3. Use the target tool. Enter your current GPA and credits in the calculator above, set your target, and it shows the GPA you need next term.
4. Ask about grade replacement. Some schools let you retake a course and replace the old grade, which can lift a cumulative GPA faster than new credits alone.
5. Track every term. Calculate your GPA at the end of each term, so a weak term is caught early instead of discovered at graduation.

Related Tools

Try the main GPA calculator for any term, or explore related tools on this site: grade calculator, percentage calculator, average calculator, time calculator. The College Board publishes guidance on the US 4.0 GPA scale and guidance on how colleges read it.

Frequently Asked Questions

What is the formula to calculate GPA?

GPA equals total grade points divided by total credit hours. Total grade points is the sum of each course’s grade points multiplied by its credit hours.

How many points is an A in GPA?

An A is worth 4.0 points on the US 4.0 scale. An A-minus is 3.7, a B-plus is 3.3, a B is 3.0, a C is 2.0, a D is 1.0, and an F is 0.0.

How do I calculate GPA with credits?

Multiply each grade’s points by its credit hours, add up all the grade points, add up all the credits, and divide points by credits. For example, 53.25 points over 15 credits is a 3.55 GPA.

How do I calculate cumulative GPA?

Use the same formula over your whole record: add up all the grade points you have ever earned and divide by all the credit hours you have ever taken.

What is a 3.55 GPA?

A 3.55 GPA is strong and above average. On the 4.0 scale it means mostly As and Bs, and it is competitive for most colleges and many scholarships.

Can I calculate GPA without a calculator?

Yes. Convert grades to points with the table on this page, multiply by credits, add, and divide. A phone calculator handles the division in seconds, and the worked example above shows every step.

Disclaimer: This calculator is for general information only and uses the standard US 4.0 scale. Your school may use different percentage ranges, plus and minus values, or weighting rules, so confirm your GPA with your transcript or academic adviser.