On the standard unweighted 4.0 scale, a solid B is usually a 3.0 GPA and roughly 83–86% in terms of percentage.

Most U.S. schools that use the common 4.0 scale map letter grades like this:

  • B+ ≈ 3.3 GPA, around 87–89%
  • B ≈ 3.0 GPA, around 83–86%
  • B− ≈ 2.7 GPA, around 80–82%

If you have “all B’s,” your overall GPA is typically about 3.0 on the unweighted 4.0 scale.

One important catch: schools sometimes tweak the exact percentage ranges and GPA points, so always double‑check your own school’s official grading scale or student handbook.