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What Is a B+ on a 4.0 Scale?
A B+ converts to 3.3 on the standard 4.0 GPA scale, roughly an 87 to 89 percent. Pick any letter grade below and the converter shows its grade points and typical percent range, with the full scale table for reference. Note that some schools use slightly different numbers, so check your syllabus if a tenth of a point matters.
How to use
- Pick any letter grade from the dropdown.
- Click Show GPA Value.
- Read the grade points and typical percent range.
- Compare against the full scale table in the result.
The full letter to 4.0 scale
Here is the full standard scale used by most US high schools and colleges. A+ and A both count as 4.0 at most schools; A- is 3.7; B+ is 3.3; B is 3.0; B- is 2.7; C+ is 2.3; C is 2.0; C- is 1.7; D+ is 1.3; D is 1.0; D- is 0.7; F is 0.0.
Typical percent bands: A+ 97-100, A 93-96, A- 90-92, B+ 87-89, B 83-86, B- 80-82, C+ 77-79, C 73-76, C- 70-72, D+ 67-69, D 65-66, below that is F. Each plus or minus step moves the GPA by 0.3, which is why a B+ (3.3) sits noticeably above a B (3.0).
When schools use different numbers
Not every school uses these exact numbers. Some use 3.67 and 3.33 instead of 3.7 and 3.3; some count an A+ as 4.3 instead of 4.0; some do not use plus and minus grades at all. Graduate schools and a few colleges also recalculate your GPA on their own scale.
For everyday use the standard table above is fine. But if a tenth of a point decides a scholarship, honors cutoff, or admission line, check your school's official grading policy rather than trusting any converter.
Frequently asked questions
What is a B+ on a 4.0 scale?
A B+ is 3.3 grade points on the standard 4.0 scale, typically covering about 87 to 89 percent. It sits 0.3 above a B (3.0) and 0.4 below an A- (3.7).
Why is a B+ 3.3 and not 3.5?
Each plus or minus step is worth 0.3 grade points on the standard scale. B is 3.0, so B+ is 3.0 + 0.3 = 3.3. The same step pattern holds across the scale: C+ is 2.3, A- is 3.7.
Is an A+ a 4.0 or a 4.3?
At most schools, both A+ and A count as 4.0. A few schools award 4.3 for A+, but that is the exception. Check your school's policy if you have A+ grades.
How does the 4.0 GPA scale work?
The 4.0 scale is the standard way US high schools and colleges turn letter grades into numbers so GPAs can be averaged. A = 4.0 at the top, F = 0.0 at the bottom, with plus/minus steps of 0.3 in between.
Do all schools use the same 4.0 scale?
Some schools use 3.67/3.33-style variants, skip plus/minus entirely, or weight AP courses differently. The differences are small per class but add up over four years, so use your school's official table for anything that matters.
What percentage is a B+?
Typically 87 to 89 percent on the most common US scale. Some schools shift the bands slightly (for example 86-88), so your syllabus is the final word.
Is a B+ a good grade?
Yes. A B+ (3.3) is solidly above average and keeps you competitive for most programs. It only becomes a concern for the most selective scholarships or graduate schools where A-range averages dominate.