🎓 High School GPA Calculator (Weighted and Unweighted)
By Shihab Mia · Updated 2026-07-27
This high school GPA calculator works out both your weighted and unweighted grade point average on the 4.0 scale. Add a row for each course, pick the letter grade, choose whether it is Regular, Honors, or AP/IB, and set the credits. You will see the weighted GPA (which rewards harder classes) and the plain unweighted GPA side by side, so you can report whichever figure a school or scholarship asks for.
What is the High School GPA Calculator?
GPA, or grade point average, turns your letter grades into numbers and averages them. On the standard United States 4.0 scale an A is worth 4.0 grade points, a B is 3.0, a C is 2.0, a D is 1.0, and an F is 0. To get the average you multiply each course grade point by its credit value, add those products together, then divide by the total credits. When every course carries one credit, this is just the simple average of the grade points.
The difference between unweighted and weighted GPA is the heart of this tool. An unweighted GPA treats every course the same, so the highest possible value is 4.0 no matter how demanding your schedule is. A weighted GPA adds a bonus for tougher courses to recognise the extra rigor: a common scheme adds 0.5 for an Honors class and 1.0 for an Advanced Placement (AP) or International Baccalaureate (IB) class. With that bonus an A in an AP course can be worth 5.0, which is why a weighted GPA can climb above 4.0.
Many transcripts record grades as a percentage rather than a letter, so it helps to know how the conversion works. Most US high schools use band-based cutoffs rather than a straight-line formula: an A typically covers 93 to 100 percent, a B covers 83 to 86, and so on, with each band mapped to a fixed grade point rather than a proportional one. A straight-line formula like (percentage divided by 100) times 4 is not how transcripts are graded, since it would turn a 75 percent C into an inflated 3.0. If your school issues percentage grades, convert each one to the matching letter using its own grading legend first, then enter that letter here.
GPA is also cumulative by nature. A semester GPA covers only that term, a yearly GPA covers all courses in that school year, and a cumulative GPA covers every course from freshman year through the most recent term. This calculator does not care which period you are working with. It simply averages whatever rows you enter, so you can use it for one semester, one full year, or your entire high school transcript by adding a row for every course you have taken.
Neither the weighted nor the unweighted number is automatically the "right" one to report. Many colleges recalculate your GPA using their own scale and often strip the weighting back out so every applicant is compared on equal footing, while local scholarships, honor rolls, and class-rank lists frequently rely on the weighted figure to reward students who challenge themselves. Because weighting schemes differ from one district to the next, the safest approach is to know both numbers and to ask each institution which one it expects. This calculator gives you both at once so you are never caught out.
GPA is also only one part of how colleges evaluate an application. Course rigor (how many Honors, AP, or IB classes you took relative to what your school offered), test scores where required, essays, and extracurriculars all factor in alongside the number. A slightly lower GPA earned in a demanding schedule is often viewed more favorably than a higher GPA in the easiest available courses, which is exactly what weighted GPA is designed to reflect.
When to use it
- Working out your weighted GPA before filling in a college or scholarship application that asks for it.
- Comparing your weighted and unweighted GPA so you know which figure each school wants.
- Seeing how adding an AP or Honors class to next semester could lift (or not lift) your average.
- Double-checking the GPA printed on a report card or transcript against your own grades.
- Working out what grade you need in a remaining course to reach a target semester or cumulative GPA.
- Estimating your cumulative GPA across multiple years by entering every course from freshman to senior year.
How to use the High School GPA Calculator
- Type the course name (optional) in the first box.
- Pick the letter grade you earned from the Grade menu.
- Choose the course type: Regular, Honors (+0.5), or AP/IB (+1.0).
- Set the credits for the course (leave it at 1 if every class counts equally).
- Click Add course to insert more rows, then read off the weighted and unweighted GPA.
- To get a cumulative GPA, keep adding rows for every course from every semester or year you want included.
Formula & method
Worked examples
Three courses, all grade A, one credit each: one Regular, one Honors, one AP.
- Regular A = 4.0 base + 0 bonus = 4.0 weighted (4.0 unweighted)
- Honors A = 4.0 base + 0.5 bonus = 4.5 weighted (4.0 unweighted)
- AP A = 4.0 base + 1.0 bonus = 5.0 weighted (4.0 unweighted)
- Weighted total = 4.0 + 4.5 + 5.0 = 13.5, divided by 3 credits = 4.50
- Unweighted total = 4.0 + 4.0 + 4.0 = 12.0, divided by 3 credits = 4.00
Result: Weighted GPA 4.50, unweighted GPA 4.00
Four courses with mixed grades and credits: AP English (A, 1 cr), Honors Biology (B, 1 cr), Regular History (A, 0.5 cr), Regular Spanish (C, 1 cr).
- AP English A: weighted (4.0 + 1.0) × 1 = 5.0, unweighted 4.0 × 1 = 4.0
- Honors Biology B: weighted (3.0 + 0.5) × 1 = 3.5, unweighted 3.0 × 1 = 3.0
- Regular History A: weighted (4.0 + 0) × 0.5 = 2.0, unweighted 4.0 × 0.5 = 2.0
- Regular Spanish C: weighted (2.0 + 0) × 1 = 2.0, unweighted 2.0 × 1 = 2.0
- Total credits = 1 + 1 + 0.5 + 1 = 3.5
- Weighted = (5.0 + 3.5 + 2.0 + 2.0) ÷ 3.5 = 12.5 ÷ 3.5 = 3.57
- Unweighted = (4.0 + 3.0 + 2.0 + 2.0) ÷ 3.5 = 11.0 ÷ 3.5 = 3.14
Result: Weighted GPA 3.57, unweighted GPA 3.14
A full-year schedule of six one-credit courses: AP Biology (A), Honors English (B+), Regular Algebra II (A-), Regular Chemistry (B), Regular World History (A), Regular Spanish II (C+).
- AP Biology A: weighted (4.0 + 1.0) × 1 = 5.0, unweighted 4.0 × 1 = 4.0
- Honors English B+: weighted (3.3 + 0.5) × 1 = 3.8, unweighted 3.3 × 1 = 3.3
- Regular Algebra II A-: weighted (3.7 + 0) × 1 = 3.7, unweighted 3.7 × 1 = 3.7
- Regular Chemistry B: weighted (3.0 + 0) × 1 = 3.0, unweighted 3.0 × 1 = 3.0
- Regular World History A: weighted (4.0 + 0) × 1 = 4.0, unweighted 4.0 × 1 = 4.0
- Regular Spanish II C+: weighted (2.3 + 0) × 1 = 2.3, unweighted 2.3 × 1 = 2.3
- Total credits = 6
- Weighted = (5.0 + 3.8 + 3.7 + 3.0 + 4.0 + 2.3) ÷ 6 = 21.8 ÷ 6 = 3.63
- Unweighted = (4.0 + 3.3 + 3.7 + 3.0 + 4.0 + 2.3) ÷ 6 = 20.3 ÷ 6 = 3.38
Result: Weighted GPA 3.63, unweighted GPA 3.38
Letter grade to grade point on the standard 4.0 scale
| Letter grade | Grade point |
|---|---|
| A+ / 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 |
| F | 0.0 |
Common weighting bonus by course type
| Course type | Bonus added to grade point | A grade becomes |
|---|---|---|
| Regular | +0.0 | 4.0 |
| Honors | +0.5 | 4.5 |
| AP or IB | +1.0 | 5.0 |
Common percentage grade bands and their letter and GPA equivalent (varies by school)
| Percentage range | Typical letter grade | Grade point |
|---|---|---|
| 97-100 | A+ | 4.0 |
| 93-96 | A | 4.0 |
| 90-92 | A- | 3.7 |
| 87-89 | B+ | 3.3 |
| 83-86 | B | 3.0 |
| 80-82 | B- | 2.7 |
| 77-79 | C+ | 2.3 |
| 70-76 | C | 2.0 |
| 60-69 | D | 1.0 |
| Below 60 | F | 0.0 |
Common mistakes to avoid
- Assuming every school weights the same way. The +0.5 for Honors and +1.0 for AP or IB are common but not universal. Some districts add 1.0 to Honors, some cap the weighted GPA at 5.0, and some use a different scale entirely. Always check your school policy before trusting a single number.
- Reporting weighted GPA when an application wants unweighted. Many colleges recalculate GPA on an unweighted 4.0 scale to compare students fairly. Sending a 4.6 weighted figure where an unweighted one is expected can be confusing, so read each form carefully.
- Forgetting to weight by credits. If your courses carry different credit values, a half-credit elective should count less than a full-year core class. Averaging the grade points without credits skews the result. This tool multiplies each course by its credits for you.
- Adding the bonus to a failing grade. An F earns 0 grade points, and most schools do not award an Honors or AP bonus on a failed course. This calculator only applies the bonus when the base grade point is above zero.
- Converting percentage grades with a straight-line formula. Dividing a percentage by 100 and multiplying by 4 is not how US high schools grade. A 75 percent is a C worth 2.0 points on most legends, not 3.0. Convert each percentage to its letter grade using your school's own cutoffs first, then enter the letter here.
- Averaging both attempts of a repeated or dropped course. Many schools exclude pass/fail electives from GPA entirely, and some replace the original grade in a retaken course rather than averaging the two attempts. Check your school's specific policy before deciding which rows to include.
Glossary
- GPA
- Grade point average, the average of your course grade points, usually on a 4.0 scale.
- Unweighted GPA
- A GPA where every course is scored on the same 4.0 scale, with no bonus for difficulty, so the maximum is 4.0.
- Weighted GPA
- A GPA that adds a bonus for harder courses such as Honors or AP, which can push the average above 4.0.
- Grade point
- The numeric value of a letter grade, for example 4.0 for an A and 3.0 for a B.
- Credit
- A measure of how much a course counts toward the average, often 1 for a full-year class and 0.5 for a semester or elective.
- AP and IB
- Advanced Placement and International Baccalaureate, college-level high school programs that usually carry the largest GPA bonus.
- Cumulative GPA
- The running average of grade points across every course and term counted so far, from freshman year to your most recent semester.
- Quality points
- The number you get from multiplying a course grade point by its credits, before it is added to the other courses and divided by total credits.
Frequently asked questions
What is the difference between weighted and unweighted GPA?
An unweighted GPA scores every course on the same 4.0 scale, so the highest possible value is 4.0. A weighted GPA adds a bonus for harder classes, commonly 0.5 for Honors and 1.0 for AP or IB, which lets the average rise above 4.0. This tool shows both at the same time.
How is a weighted high school GPA calculated?
For each course you take the base grade point (4.0 for an A, 3.0 for a B, and so on), add the course-type bonus, multiply by the credits, sum every course, then divide by the total credits. The bonus is 0 for Regular, 0.5 for Honors, and 1.0 for AP or IB.
Can a weighted GPA be higher than 4.0?
Yes. Because Honors and AP or IB courses add a bonus on top of the 4.0 base, a student taking several of them and earning top grades can have a weighted GPA of 4.5, 5.0, or higher, depending on the school scheme.
Which GPA do colleges look at?
It varies. Many colleges recalculate your GPA on their own unweighted scale, while scholarships and class rank often use the weighted figure. The safest move is to know both numbers and ask each institution which one it wants.
How do credits affect my GPA?
Courses with more credits count more toward the average. A full-year class at 1 credit influences the result twice as much as a half-credit elective. The calculator multiplies each course by its credits, so leave credits at 1 if every class should count equally.
Do all schools use the same Honors and AP bonus?
No. The +0.5 for Honors and +1.0 for AP or IB are common defaults but not a universal rule. Some districts weight differently or cap the maximum, so confirm your school policy and adjust the course type to match how your transcript is scored.
Does a plus or minus affect my GPA?
Yes on most transcripts. An A- is typically worth 3.7 rather than a full 4.0, and a B+ is typically 3.3 rather than 3.0. Use the plus and minus grade options in this calculator so the fractional grade points are included correctly.
Can I calculate GPA from percentage grades?
Yes, but convert each percentage to a letter grade first using your school's own grading bands, since most US high schools use fixed cutoffs (for example 93 to 100 percent equals an A) rather than a straight proportional formula. Then enter that letter grade here.
Does an F still lower my GPA even if I retake the class?
The original F is 0 grade points and pulls the average down while it is included. Some schools replace a failed grade with the retake grade on the transcript instead of averaging both attempts, so check your school's repeat-course policy before entering both rows.
What GPA do I need for a competitive college?
There is no single cutoff, since admissions weigh course rigor, test scores, and essays alongside GPA. As a general guide, many counselors treat 3.5 and above as competitive for selective schools, 3.0 to 3.49 as solid for a broad range of four-year colleges, and below 3.0 as a signal to widen your college list or focus on improving remaining grades.