Attendance Calculator — Free Online Attendance Calculator

Check your class attendance percentage and see exactly how many more classes you must attend — or can safely miss — to hold your target.

The Attendance Calculator is part of Toolio's Calculators collection — one of 64 free tools on the site. It is made for students, creators, office workers and anyone who needs a reliable attendance calculator without installing software or creating an account. It works on phones, tablets and computers, right in the browser.

How to use the Attendance Calculator

  1. Enter the classes you have attended and the total classes held so far.
  2. Set your target attendance — 75% is the most common college requirement.
  3. See your current percentage, how many classes in a row you must attend to reach the target, and how many you can miss.

Attendance Calculator — Frequently Asked Questions

Is this Attendance Calculator free?

Yes — completely free. No sign-up, no account, no installation and no usage fees. Open the page and use it as much as you like.

Do my files leave my device?

No. This tool runs entirely in your browser using JavaScript — your files and text are processed on your own device and are never uploaded to a server.

Does it work on mobile?

Yes. Toolio is built mobile-first, so the Attendance Calculator works in any modern phone browser — Android and iPhone — as well as on tablets and desktop computers, with nothing to install.

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