Updated · Built and checked by the PlinzoTools team, formulas tested against published sources
Check your current attendance percentage and how many classes you can miss (or must attend) to meet a required minimum.
Given classes attended, total classes held, remaining classes, and your institution's required minimum attendance percentage, this tool shows your current attendance percentage, and either how many more classes you can afford to miss (if you're already safely above the minimum) or how many of the remaining classes you must attend (if you're currently short) to meet the requirement.
Enter classes attended, total classes held so far, remaining classes in the term, and the required minimum percentage. Your status appears instantly.
The calculator takes four inputs: classes attended, classes held so far, the required attendance percentage, and classes remaining in the term. Your current percentage is attended divided by held, times 100. Then it reports one of two figures, depending on where you stand.
Note that the shortage figure is based on consecutive attendance from now, not on how many classes remain, so compare it with your remaining count yourself.
You have attended 60 of 75 classes (80 percent). The requirement is 75 percent and 20 classes remain, so the term will have 95 classes in total. To finish at 75 percent you need 71.25 attended classes, which rounds up to 72. You already have 60, so you must attend at least 12 of the final 20 and can miss up to 8. The tool shows the 8.
Now imagine you attended 50 of 75 (66.7 percent) with the same 75 percent requirement. You need extra classes x such that (50 + x) / (75 + x) reaches 0.75. Solving gives 50 + x = 56.25 + 0.75x, so x = 25. The tool reports 25 more classes to attend. If only 20 classes remain, you cannot recover through attendance alone, and you would need to ask about your institution's shortage rules.
This is pure arithmetic. It does not know your institution's rules about condonation, medical certificates, rounding of borderline percentages, minimum attendance for exam eligibility, or how lab sessions are weighted. If the result shows you cannot recover, or you sit close to the line, speak to your instructor or administration office early, because many institutions have a formal process and deadlines for exemptions. Also remember that being allowed to skip a number of classes does not mean the missed material will not affect your grades.
Recalculate every couple of weeks by updating attended and held counts and reducing the remaining classes. Watching the can-miss number shrink is more informative than a single snapshot early in the term.
The tool will show this directly -- it means your current shortfall is too large to recover within the remaining classes, and you may need to consult your institution's specific attendance-shortage policy (medical exemptions, condonation requests, etc.).
Because the shortfall is too deep to recover within the term. The figure is how many consecutive attended classes you would need, and the tool does not cap it at the number remaining.
It compares exact percentages, so you must reach or exceed the requirement itself. Your institution may round differently, so confirm its rule for borderline cases.
That depends on your institution. The tool only uses the numbers you type, so enter attended and held counts the way your institution's official record does.
Contact your instructor or administration office promptly to ask about medical exemptions, condonation requests or make-up options and any deadlines for applying.