What inputs does it need?

Total classes so far, classes attended, total classes remaining in the term, and your required attendance percentage.

Does it account for classes already missed?

Yes, it factors in your current attendance record, not just a hypothetical starting from zero.

What if I've already fallen below the required percentage?

It shows how many of the remaining classes you'd need to attend (potentially all of them) to still reach the target, or confirms if the target is no longer mathematically reachable.

Does Attendance Calculator upload my files to a server?

No. Attendance Calculator runs entirely in your browser using on-device processing, your files never leave your device.

Attendance Calculator

See how many classes you can skip, or must attend, to hit a required percentage.

Runs in your browser

Total classes heldClasses attendedRequired attendance %

80.0%

You can miss up to 4 more classes and stay at or above 75%.

About this tool

Figuring out exactly how many classes you can afford to miss (or need to attend) to hit a required attendance percentage is simple math, but tedious to recalculate by hand every time you're deciding whether to skip one more. This tool shows how many classes you can skip, or must attend, to hit a required percentage, giving you an instant answer instead of recalculating the math yourself each time.

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