Calculators · Free browser tool

Attendance Calculator

Check your current percentage and the classes needed to reach 75% or a custom requirement.

Runs on your deviceNo account needed

Loading tool…

Enter classes attended and total classes held for the same subject and period. The calculator checks your current percentage and estimates future classes needed or the number you can miss while still meeting the selected requirement.

How to use Attendance Calculator

Enter the details

Fill in the labelled fields in the workspace.

Choose your settings

Set the available options for your task.

Use the result

Review the result before copying, exporting, or applying it.

Example

42 attended out of 50 is 84%. At a 75% requirement, six further absences leave 42 out of 56, exactly 75%. With 30 attended out of 50, attending the next 30 reaches 60 out of 80, exactly 75%.

Continue your task

What to check

All classes are assumed to count equally. Institution-specific leave, rounding and eligibility rules are not included. The calculation does not grant permission to miss classes or guarantee exam eligibility. Check how many classes remain in the term.

Common questions

Is 75% required everywhere?

No. It is the example default. Enter the requirement that applies to your institution, subject and attendance period.

Why do I need more classes than expected?

Every class you attend adds one to both the attended count and the total. The denominator does not stay fixed.

Can future attendance recover 100% after an absence?

No. If previous absences remain in the cumulative record, future attendance approaches 100% but cannot reach it exactly.

What if no classes have been held?

There is no current attendance percentage to calculate yet. Enter the counts once classes have been recorded.