Letter Grade Threshold Gap
Calculator

It shows the numeric gap between your current score and the cutoff for the next letter grade up, so you can see precisely how many points you need to gain to move up a grade band. It's the inverse of asking what grade a given score falls into.

Each instructor or institution sets its own grading scale, so a B+ might start at 87% in one course and 88% in another. Always use the specific threshold table published in your syllabus rather than a generic scale.

A negative gap indicates how much cushion you have above the current threshold, essentially how many points you could afford to lose before dropping back into the lower grade band. It's a useful way to gauge how safe your current grade really is.

Only if you enter the actual effective threshold after rounding is applied. Some schools round 89.5% up to a 90%, which effectively lowers the real threshold by half a point, so check whether your institution rounds before comparing your raw score.

Yes, comparing the point gap against the maximum extra credit available tells you immediately whether it's mathematically possible to close the gap, which is often clearer than guessing from your overall grade alone.