Grades
Band lookup
A letter grade is not computed, it is looked up. The percentage belongs to the highest band whose lower cut-off it meets or exceeds.
The Formula
letter = the band whose cut-off is the highest one the percentage reaches
A letter grade is not computed, it is looked up. The percentage belongs to the highest band whose lower cut-off it meets or exceeds.
| Symbol | Meaning | Unit | Notes |
|---|---|---|---|
| percentage | Percentage | % | The score as a percentage of the total marks. |
| cutoff | Cut-off | % | The lowest percentage still inside a band. |
| letter | Letter grade | letter | The label attached to that band. |
What Each Symbol Means
percentage%
Percentage
The score as a percentage of the total marks.
cutoff%
Cut-off
The lowest percentage still inside a band.
letterletter
Letter grade
The label attached to that band.
See It Worked With Real Numbers
A formula on its own does not tell you which number goes where. The how to convert a percentage to a letter grade page applies this equation to a concrete case, shows every intermediate step, and names the mistakes that produce a wrong answer even when the algebra is right.
Where This Formula Appears
This equation is the working core of How To Convert A Percentage To A Letter Grade, filed under Education. Every number the guide produces comes from substituting into this one line.