GPA Calculator

Work out your unweighted and weighted GPA on the US 4.0 scale, with honours and AP bonuses, credits and cumulative GPA. Custom scales too.

Reviewed by Dany, RightSums team · Updated

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education · Daily life · UK & US

Add your courses with a letter grade and credits, and the calculator works out your GPA on the US 4.0 scale, where an A is 4.0, an A- 3.7 and a B+ 3.3. Mark a course as honours or AP, IB or dual enrollment to get a weighted GPA as well. The bonuses start at +0.5 and +1.0, a common convention, and you can change them to match your school. Grades of A, B+, A-, B and C+ come to 3.26 unweighted, or 3.76 with one honours and two AP courses. Enter your GPA so far and its credits for a cumulative figure. For Canada, pick Simon Fraser University’s 4.33 scale, York University’s 9-point scale or a custom scale.

Accepted inputs

  • Course name
  • Letter grade
  • Credits
  • Course level (regular, honours, AP / IB / dual enrollment)
  • Honours and AP / IB bonuses
  • GPA so far and its credits
  • Grade point scale or your own custom scale

Outputs

  • Unweighted GPA
  • Weighted GPA
  • Cumulative GPA
  • Credits counted
  • Grade points for each course

How to use the GPA Calculator

  1. Pick your grade point scale, which starts on the US 4.0 scale with plus and minus grades, or enter your own custom scale.
  2. Add each course with its letter grade, its credits and, for a weighted GPA, whether it is a regular, honours or AP, IB or dual enrollment course.
  3. The calculator multiplies each grade’s points by its credits, adds them up and divides by the total credits, adding your chosen bonus for weighted courses except where the grade is an F.
  4. Enter your GPA so far and the credits behind it to see your new cumulative GPA across every term.

Frequently asked questions

How do I calculate my high school GPA?

Turn each letter into grade points, multiply by the course credits, add them up and divide by total credits. With one-credit grades of A (4.0), B+ (3.3), A- (3.7), B (3.0) and C+ (2.3), the total is 16.3 points over 5 credits, an unweighted GPA of 3.26.

What is the difference between weighted and unweighted GPA?

An unweighted GPA treats every class the same on the 4.0 scale. A weighted GPA adds a bonus for harder classes, commonly +0.5 for honours and +1.0 for AP or IB. The grades above, with AP English, honours Chemistry and AP Spanish, rise from 3.26 to 3.76 weighted. Schools set their own bonuses.

How do I calculate my cumulative GPA?

Multiply your GPA so far by its credits, add this term’s grade points and divide by all the credits. A 3.4 GPA over 30 credits plus an A in a 4-credit class and a B and a C in 3-credit classes gives (102 + 31) ÷ 40 = 3.325, or 3.33.

What GPA scale do Canadian universities use?

There is no single Canadian scale. The University of Toronto uses a 4.0 scale, Simon Fraser University a 4.33 scale where an A+ is 4.33, and York University a 9-point scale. With an A+, a B+ and a C in equal courses, the SFU scale gives 3.22. For other schools, use the custom scale.

Do colleges use my weighted or unweighted GPA?

It varies. College Board says colleges may adjust or remove the weighting schools give to AP and honours classes so applicants can be compared fairly, and many recalculate GPAs their own way. Know both figures, and check each college’s admissions pages for how it reads your transcript.

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