5.0 GPA Scale Calculator
See how regular, honors and AP/IB grades contribute to a 5.0-style weighted GPA.
What does a 5.0 GPA scale mean?
A common high-school weighted system gives an A in an AP or IB course 5.0 points instead of 4.0. In this calculator, honors courses receive 0.5 extra points and AP/IB courses receive 1.0. Regular courses receive no bonus. The highest possible course value is therefore 5.0, but your overall weighted GPA depends on all your grades and course credits.
| Grade | Regular | Honors | AP / IB |
|---|---|---|---|
| A or A+ | 4.0 | 4.5 | 5.0 |
| A- | 3.7 | 4.2 | 4.7 |
| B+ | 3.3 | 3.8 | 4.3 |
| B | 3.0 | 3.5 | 4.0 |
| C | 2.0 | 2.5 | 3.0 |
| F | 0.0 | 0.0 | 0.0 |
This is one example of a weighted scale, not a universal standard. Some schools cap grades at different values, use percentage bands, or award fewer bonus points. We do not add a bonus to an F. Check your school's handbook for the actual rule.
Worked example with unequal credits
Take an AP class with an A for 1 credit, an honors class with a B for 1 credit, and a regular class with an A for 0.5 credit. Weighted quality points are 5.0 + 3.5 + 2.0 = 10.5. Divide by 2.5 credits for a 4.20 weighted GPA. The same grades without bonuses yield (4.0 + 3.0 + 2.0) ÷ 2.5 = 3.60 unweighted. The tool above calculates both as you change the rows.
Can you convert 5.0 GPA to 4.0 GPA?
There is no reliable single multiplier. A 4.2 weighted GPA might come from very different grades and course mixes. Recalculate from the original letters and credits without bonuses to get an unweighted estimate, which this tool shows directly. If an application requires a particular conversion, follow its instructions rather than guessing.
Use the high school GPA calculator for transcript-entry tips, or read the 4.0 GPA scale chart to see each base grade point.
Frequently asked questions
What is an A in an AP class on this 5.0 scale?
With the +1.0 AP/IB bonus used here, an A or A+ is worth 5.0 points for that course.
What is a B in an honors class?
A B is 3.0 unweighted points. This tool adds 0.5 for honors, making it 3.5 weighted points.
Is a 5.0 GPA possible?
Yes, on this model it is the maximum if every GPA-eligible credit is an AP/IB class with an A or A+. School scales can differ.
Can I multiply a 5.0 GPA by 0.8 to get a 4.0 GPA?
No. That loses information about individual grades and course levels. Recalculate the unweighted average from the original grades instead.