What Is a High School GPA Calculator?
A High School GPA Calculator converts course grades into Grade Point Average (GPA) by assigning grade points, applying course credits, and adding weighted boosts for advanced classes. The calculator can show unweighted GPA on the standard 4.0 scale and weighted GPA on a 4.5, 5.0, or school-specific scale.
- Use weighted GPA to include Honors, AP, IB, and college-level course boosts.
- Use unweighted GPA to compare all classes on the standard 4.0 scale.
- Use prior GPA and prior credits to estimate a new cumulative GPA.
How to Use the High School GPA Calculator
To use the High School GPA Calculator, choose weighted or unweighted mode, enter optional prior GPA details, add each course, select the course grade and course weight, then read the semester GPA and projected cumulative GPA.
Step 1: Select Weighted or Unweighted GPA
Select Weighted to include course-level boosts, or select Unweighted to use the standard 4.0 scale. Weighted GPA includes Honors, AP, IB, and college-level difficulty; unweighted GPA ignores course difficulty.
Step 2: Enter Your Current GPA and Prior Credits (Optional)
Enter your current GPA and prior credits when you want a projected cumulative GPA. Leave both fields blank when you only need the current semester GPA.
Step 3: Name Your Semester (Optional)
Name your semester when you want the result panel to identify the term, such as Fall semester, Spring semester, Grade 10, or Grade 11.
Step 4: Add Your Courses
Add each graded course from the semester. Enter the course name, choose the letter grade, enter credits, choose Regular, Honors, AP/IB, or College, then add another course when your schedule has more classes.
- Enter course name for easier tracking, such as Algebra II, English 10, Biology, or US History.
- Enter course grade as a letter grade from A+ through F.
- Enter course credits as 1.0, 0.5, or the credit value shown in your school handbook.
- Select course weight as Regular, Honors, AP/IB, or College.
- Add another course until every graded class for the term is listed.
Step 5: View Your Semester GPA
View your semester GPA after the course list is complete. The result updates when you change a grade, credit value, or course weight.
Step 6: Add Another Semester
Use the prior GPA and prior credits fields to include completed semesters. Add current-semester courses on this page, then update the prior GPA fields after each report card.
Step 7: View Your Cumulative GPA
View projected cumulative GPA when current GPA and prior credits are entered. The calculator combines prior quality points with current semester quality points.
How GPA Is Calculated in High School
High school GPA is calculated by multiplying each course grade point by credits, adding quality points, and dividing by total credits attempted. Weighted GPA adds course-type boosts before quality points are totaled.
Understanding the GPA Scale
The standard high school GPA scale uses 4.0 for A, 3.0 for B, 2.0 for C, 1.0 for D, and 0.0 for F. Some schools award A+ as 4.3, but this calculator caps A+ at 4.0 for unweighted GPA.
Weighted vs. Unweighted GPA
Unweighted GPA measures grades on the standard 4.0 scale. Weighted GPA adds 0.5 for Honors courses and 1.0 for AP, IB, or college-level courses when your district weighting system allows the boost.
| Course type | Boost | A grade value |
|---|---|---|
| Regular | +0.0 | 4.0 |
| Honors | +0.5 | 4.5 |
| AP / IB / College | +1.0 | 5.0 |
How to Calculate GPA, Step by Step
To calculate GPA, convert each letter grade to grade points, add the course weight when needed, multiply by credits, add quality points, and divide by total credits.
- Convert letter grades to GPA points.
- Add weighted boosts for Honors, AP, IB, or college-level classes.
- Multiply each GPA point value by course credits.
- Add all quality points.
- Divide quality points by total credits.
GPA Conversion Tables
GPA conversion tables show how letter grades and percentage ranges become grade points for Regular, Honors, and AP/IB classes. These tables are standard references, but your school handbook is the official grading policy.
Regular Class: Letter Grade to GPA
Regular classes use the base 4.0 scale with no weighted boost.
| Letter grade | Percentage range | GPA points |
|---|---|---|
| A+ / A | 93-100 | 4.0 |
| A- | 90-92 | 3.7 |
| B+ | 87-89 | 3.3 |
| B | 83-86 | 3.0 |
| B- | 80-82 | 2.7 |
| C+ | 77-79 | 2.3 |
| C | 73-76 | 2.0 |
| C- | 70-72 | 1.7 |
| D+ | 67-69 | 1.3 |
| D | 63-66 | 1.0 |
| D- | 60-62 | 0.7 |
| F | 59 or lower | 0.0 |
Honors Class: Letter Grade to GPA
Honors classes add 0.5 grade points when your school calculates weighted high school GPA.
| Letter grade | Percentage range | Weighted GPA points |
|---|---|---|
| A+ / A | 93-100 | 4.5 |
| A- | 90-92 | 4.2 |
| B+ | 87-89 | 3.8 |
| B | 83-86 | 3.5 |
| B- | 80-82 | 3.2 |
| C+ | 77-79 | 2.8 |
| C | 73-76 | 2.5 |
| C- | 70-72 | 2.2 |
| D+ | 67-69 | 1.8 |
| D | 63-66 | 1.5 |
| D- | 60-62 | 1.2 |
| F | 59 or lower | 0.0 |
AP/IB Class: Letter Grade to GPA
Advanced Placement (AP), International Baccalaureate (IB), and college-level classes add 1.0 grade point when your school awards the full weighted boost.
| Letter grade | Percentage range | Weighted GPA points |
|---|---|---|
| A+ / A | 93-100 | 5.0 |
| A- | 90-92 | 4.7 |
| B+ | 87-89 | 4.3 |
| B | 83-86 | 4.0 |
| B- | 80-82 | 3.7 |
| C+ | 77-79 | 3.3 |
| C | 73-76 | 3.0 |
| C- | 70-72 | 2.7 |
| D+ | 67-69 | 2.3 |
| D | 63-66 | 2.0 |
| D- | 60-62 | 1.7 |
| F | 59 or lower | 0.0 |
Sample GPA Calculation
A sample GPA calculation shows how the same 4 courses can produce different unweighted and weighted GPA results when Honors and AP/IB boosts are included.
Unweighted GPA Example
An unweighted GPA example with 4 equal-credit courses uses only the base 4.0 values. English A = 4.0, Biology B+ = 3.3, AP History A- = 3.7, and Honors Algebra B = 3.0.
Weighted GPA Example
A weighted GPA example adds 1.0 to AP History and 0.5 to Honors Algebra. English A = 4.0, Biology B+ = 3.3, AP History A- = 4.7, and Honors Algebra B = 3.5.
How GPA Scales Vary by State and School District
High school GPA scales vary by state, district, and school handbook. Common systems include a 4.0 unweighted scale, a 4.5 Honors scale, a 5.0 AP/IB scale, and local 6.0 scales used by some districts.
University of California (UC) GPA Recalculation
The University of California (UC) recalculates applicant GPA using approved A-G academic courses and caps the number of semesters that receive honors points. UC GPA can differ from the weighted GPA printed on a high school transcript.
High School GPA Tips
Use high school GPA tips to make the calculator match your transcript and college application rules. The best estimate uses your school handbook, exact credits, correct course type, and official grade-replacement policy.
- Check your district weighting system before counting Honors, AP, IB, or dual enrollment boosts.
- Use exact credits for semester courses, full-year courses, electives, physical education, and arts classes.
- Separate Pass/Fail, Pass/No Pass (P/NP), and Satisfactory/Unsatisfactory (S/U) classes when those classes do not earn GPA points.
- Apply grade-replacement policy only when your school replaces the old grade after a retake.
- Compare weighted and unweighted GPA because colleges often review both numbers.
Related Calculators
Use related calculators for nearby school planning tasks, including cumulative GPA updates, semester grade checks, final exam planning, middle school GPA, and percentage conversion.
Frequently Asked Questions
How is GPA calculated in high school?
High school GPA is calculated by dividing total quality points by total credits attempted. Quality points equal grade points multiplied by course credits.
What is the difference between weighted and unweighted GPA?
Weighted GPA includes course difficulty boosts, while unweighted GPA uses the standard 4.0 scale. Honors commonly adds 0.5, and AP or IB commonly adds 1.0.
How do AP, Honors, and IB classes affect GPA?
AP, Honors, and IB classes increase weighted GPA when your school awards extra grade points. Honors usually adds 0.5, while AP and IB usually add 1.0.
Do 9th-grade grades count toward cumulative GPA?
Yes, 9th-grade grades usually count toward cumulative GPA. Some college systems recalculate GPA differently, so use your transcript and the college policy together.
Can you get a GPA higher than 4.0?
Yes, a student can get a GPA higher than 4.0 on a weighted scale. A student can earn 4.5 for an A in Honors or 5.0 for an A in AP or IB when the school allows those boosts.
What's the difference between semester GPA and cumulative GPA?
Semester GPA uses classes from one term, while cumulative GPA uses all completed GPA-counted terms. Cumulative GPA combines total quality points and total credits.
Do electives, PE, and arts classes count toward GPA?
Yes, electives, physical education, and arts classes usually count toward GPA when the class earns credit and a letter grade. Some schools exclude certain non-academic courses.
Do Pass/Fail classes affect GPA?
Pass/Fail classes usually do not affect GPA when Pass has no grade-point value. A Fail, No Pass, or Unsatisfactory grade can count as 0.0 when your school policy assigns GPA points.
Can a bad grade be replaced if I retake a class?
Yes, a bad grade can be replaced when your school uses grade replacement. Other schools use grade averaging, where both attempts stay on the transcript.
Does my school use A+ as 4.0 or 4.3?
Your school handbook decides whether A+ counts as 4.0 or 4.3. This calculator caps A+ at 4.0 for unweighted GPA.
How do I calculate GPA if my school uses credits?
Multiply each course GPA point value by credits, add the quality points, and divide by total credits. This method works for weighted and unweighted GPA.
How do colleges view weighted vs. unweighted GPA?
Colleges usually review both weighted and unweighted GPA. Colleges can recalculate GPA using their own admission rules, course lists, and weighting caps.