Calculate your attendance %, required classes, safe bunk days & predicted percentage.
Ultimate Attendance Calculator (India)
Calculate your attendance %, required classes, safe bunk days & predicted percentage.
Current Attendance
0%
Classes needed
—
You can miss now
—
Predicted attendance %
—
Future bunks allowed
—
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<script>
document.addEventListener("DOMContentLoaded", function(){
function clamp(v,min,max){ return Math.max(min, Math.min(max, v)); }
function runCalc(){
const total = Number(att_total.value || 0);
const attended = Number(att_attended.value || 0);
const req = Number(att_required.value || 0)/100;
const future = Number(att_future.value || 0);
const abs = Number(att_plannedAbs.value || 0);
if(total <= 0){ att_curPercent.textContent = "—"; return; }
const cur = (attended/total) * 100;
att_curPercent.textContent = cur.toFixed(1) + "%";
let need = Math.ceil((req*total - attended) / (1-req));
if(need < 0) need = 0;
att_classesNeeded.textContent = need;
let miss = Math.floor((attended - req*total)/req);
if(miss < 0) miss = 0;
att_canMiss.textContent = miss;
const after = ((attended + (future-abs)) / (total+future)) * 100;
att_predicted.textContent = after.toFixed(1) + "%";
let fut = Math.floor(attended + future - req*(total+future));
if(fut < 0) fut = 0;
att_futureMiss.textContent = fut;
}
function resetCalc(){
att_total.value = 60;
att_attended.value = 42;
att_required.value = 75;
att_future.value = 20;
att_plannedAbs.value = 2;
runCalc();
}
att_calcBtn.addEventListener("click", runCalc);
att_resetBtn.addEventListener("click", resetCalc);
runCalc();
});
</script>
