Find your current attendance %, how many classes you
can safely skip, and — if you're short — how many
you must attend in a row to reach your target.
🔒 Runs entirely in your browser — nothing is sent anywhere
Your attendance
Every lecture or session conducted so far.
How many of those you actually showed up to.
Most colleges require 75%. Change it to match yours.
How this works
Three quick numbers tell you exactly where you stand and what to do
next — whether you can afford a day off or need to buckle down.
1
Current percentage
We divide the classes you attended by the total held and multiply
by 100: attended ÷ total × 100.
2
Classes you can skip
If you're above target, we work out the buffer:
floor(attended × 100 ÷ target − total).
3
Classes to catch up
If you're short, we find how many you must attend back-to-back:
ceil((target × total ÷ 100 − attended) ÷ (1 − target ÷ 100)).
A worked example
Say 80 classes have been held, you've attended
58, and your college needs 75%.
Where you stand
Current attendance
72.5%
Target
75%
Status
Below target
What to do
Classes you can skip
0
Attend in a row
8
Then attendance is
75%
The "skip" and "catch-up" answers assume every future class is
counted toward the same total. Institutions may round differently or
apply medical-leave exemptions, so treat this as a planning estimate
and confirm the exact rule with your department.
🔒
Private by design. Every number stays on your device. Nothing you type is uploaded, stored or shared.
Frequently Asked Questions
How is attendance percentage calculated?▼
Attendance percentage is (classes attended ÷ total classes held) × 100. If you attended 60 out of 80 lectures, that's 60 ÷ 80 × 100 = 75%. This tool does the maths live as you type.
How many classes can I skip and still keep 75% attendance?▼
You can skip classes only while your attended count still clears the target. The safe number is floor(attended × 100 ÷ target − total). If it comes out at zero or below, you're already at the edge and can't miss any more without dropping below target.
I'm below the required attendance — how do I recover it?▼
Attend every remaining class in a row. The number you need is ceil((target × total ÷ 100 − attended) ÷ (1 − target ÷ 100)). Because each class you attend raises both your attended count and the total, catching up is possible as long as the target is under 100%.
Why is 75% the default target?▼
Most Indian universities, colleges and schools (including those under UGC and AICTE guidelines) require a minimum of 75% attendance to sit for exams. You can change the target to 80%, 85% or whatever your institution mandates.
Does the calculator store or send my attendance data?▼
No. Every calculation runs entirely inside your browser with plain JavaScript. Your class numbers are never uploaded, saved on a server, or shared with anyone — we never see them.
Can I count each class as one, or should I use hours?▼
Use whichever unit your institution tracks. If attendance is recorded per lecture, count lectures; if it's recorded per hour or per session, use those. The percentage maths is identical as long as both boxes use the same unit.