Disclaimer
Disclaimer
Last updated: October 2026
The tool this page covers is SleepLabix, a sleep-cycle calculator. Put simply, 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 the way it does so is this: 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. Everything stated here applies to that tool and the values it handles, and to nothing else.
In day-to-day use the tool works only from the time you want to wake or sleep, and it is usually opened for things like picking a bedtime for a fixed alarm. None of that reaches us, so none of it can be stored.
For information, not advice
The content on sleeplabix.com exists to inform and educate. Every result is an estimate derived from your input, not a measurement or a piece of professional advice — and SleepLabix makes no claim beyond that.
What a health estimate can and cannot say
The calculators here rest on equations fitted to populations. Two people with the same inputs can have genuinely different true values, so the figure is an estimate rather than a measurement. Nothing on this site diagnoses, treats, cures or prevents a condition. Speak to a qualified healthcare professional before changing a diet, a supplement or a training plan, particularly if you are pregnant or managing a condition or medication.
No guarantees
The assumption that matters most for SleepLabix is that your input matches the model. 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. When it does not — or when rounding, unit handling or browser behavior intervenes — no warranty attaches to the Site, careful as we are with the method.
Links to other sites
External links are offered for reference only. We neither control nor vouch for outside content or its accuracy.
How the site is funded
The Site is funded by advertising. No advertiser has any say over a result, and no ad should be read as an endorsement.
Before you act on a result
Before you act on any figure from this site, confirm it fits your circumstances. If you spot something wrong, use the contact page — we would rather correct it than defend it.