Attendance Calculator
Check your current attendance, find how many classes you need to attend, and plan how many classes you can miss.
What does the Attendance Calculator tell you?
This calculator answers the practical questions students usually have: What is my current attendance?, How many classes must I attend to reach 75%?, and How many classes can I miss without dropping below my target?
Future Attendance % = (Current Attended + Future Attended) ÷ (Current Conducted + Future Classes) × 100
Example: reaching 75% attendance
If you have attended 72 out of 100 classes, your current attendance is 72%. To reach 75%, you need to attend the next 12 consecutive classes:
(72 + 12) ÷ (100 + 12) × 100 = 75%.
Important: Attendance requirements vary by college, university, course and institution. Always follow your institution's official attendance rules.
Attendance planning guide
If your current attendance is below your target, attending additional classes increases the percentage gradually. The number of classes required depends on both your current attended classes and total classes conducted.
How many classes can I miss?
To find the maximum number of future classes you can miss while staying at or above a target, compare your current attended classes with the target percentage after adding the potential missed classes to total conducted classes.
Can I reach 75% attendance?
Usually yes if enough future classes remain, but the answer depends on your current attendance and how many classes your institution will conduct in the future. Use the Future What-If tab to test a realistic schedule.
Frequently Asked Questions
How is attendance percentage calculated?
Divide classes attended by classes conducted and multiply by 100.
How many classes do I need to attend to reach 75%?
Enter your current classes conducted and attended, then select a 75% target. The calculator determines the minimum number of consecutive classes you need to attend.
How many classes can I miss and still maintain 75%?
Enter your current attendance and select 75% as the target. The calculator estimates how many additional classes can be missed while remaining at or above the target.
What if my college requires 80% or 85% attendance?
Select 80%, 85%, 90% or enter a custom target to calculate according to your institution's requirement.
Does this calculator account for medical leave or attendance exemptions?
No. Exemptions, condonation, medical leave, shortage rules and attendance waivers depend on the institution and should be handled according to its official policy.