About Bunk Calculator

Bunk Calculator started from a problem almost every student has had: wondering if it's actually okay to skip the next class, without finding out the hard way that it wasn't.

"Just keep 75% attendance" sounds easy, but the number changes every single day a class happens, whether you go or not. So we built a tool that does the math for you. Pop in your numbers, get your answer, done.

It's completely free, you don't need an account, and it all runs right in your browser. We don't save or send anything you type in.

We've also got a blog with simple guides on attendance rules and ways to plan your classes smarter.