About CycleRest

CycleRest is a free set of sleep calculators: bedtimes for a chosen wake-up time, wake-up times if you go to bed now, naps, a weekly sleep debt check and a caffeine cutoff estimate. Alongside them we publish short guides on sleep cycles and how much sleep people need, with every health figure linked to its source.

How the site works

• No accounts and no sign-up. Calculations run in your browser.
• Your settings and any sleep-debt entries are saved only on your device.
• Every page shows when its sources were last checked.

Who runs this site

CycleRest is operated by [to be provided] (owner / legal entity), [to be provided] (country). The content is written and maintained by the CycleRest team. We are not doctors, and our content is not medically reviewed: see our editorial policy and medical disclaimer. “CycleRest” is a working name.

Advertising

There are no ads on the site today. Space is reserved on some pages for advertising in the future; ads will never appear between a calculator’s inputs and its results.

Corrections

If you find a mistake, please tell us via the contact page.