About
About SleepLabix
SleepLabix is a small, independent project. A sleep-cycle calculator is the whole of what we do here: it suggests bedtimes and wake times that land at the end of a ninety-minute sleep cycle rather than in the middle of one. There is no account to create, no email to hand over, and no paywall hiding behind the third advert.
Why this site exists
Plenty of health and body-composition pages already exist. Most of them make you dismiss a banner, ignore a modal and scroll past filler before the tool appears. SleepLabix inverts that: the tool is the page, it suggests bedtimes and wake times that land at the end of a ninety-minute sleep cycle rather than in the middle of one, and everything else is explanation you can read or skip.
How it works
No server is involved in the arithmetic. It counts backwards or forwards from the wake or sleep time you choose in ninety-minute cycles and adds the time you usually take to fall asleep, so the suggested moment sits between cycles rather than inside one. We state the method openly because a tool that cannot explain its own answer is not much use to anyone trying to trust it.
What happens to your input
This is a local tool by construction. The time you want to wake or sleep never leaves your device; there is no endpoint to receive it and no log to read it back from. Disconnecting from the internet after the page loads changes nothing about how it behaves.
Who uses it
- anyone planning a diet or a training block.
- people who want a second opinion on a figure.
- readers looking for the method, not just the output.
Who pays for this
SleepLabix is free to use and supported by advertising. Adverts are kept off the working part of the page, and no advertiser receives anything you type. If a page ever becomes slow or intrusive, that is a bug worth reporting.
Get in touch
Spotted a mistake or missing a feature? The contact page takes it. The suggestions that get acted on usually come from people who actually use the sleep-cycle calculator.