About My Sleep Calculator

My Sleep Calculator is a free, science-backed tool that helps millions of people every month find the perfect bedtime or wake-up time using the proven 90-minute sleep cycle formula.

Our Mission

We believe that great mornings start with smart nights. Bad sleep is one of the biggest hidden epidemics of modern life. Our mission is simple: help every visitor wake up feeling great, for free, forever.

How We Built the Calculator

The 90-minute sleep cycle model is built on decades of polysomnography research from sleep labs around the world (Stanford, Harvard, the AASM and the National Sleep Foundation).

Contact

Have feedback or partnership ideas? Reach us at mysleepcalculator@gmail.com.