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Last reviewed: 14 September 2026
Corrections are especially welcome. If something here is wrong, we would rather know.
The Perfect Sleep Calculator is run by Nouvelle Digital, an independent publisher in the United Kingdom.
Corrections
If something on the site is factually wrong, out of date, or misleading, please tell us — include the page address and what you think is wrong. Corrections take priority over everything else in the inbox, and we will update the page and its review date.
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For anything to do with personal data — access requests, deletion, or withdrawing consent — use the same address and say what you would like us to do. Nouvelle Digital is the data controller for this site. Details of what we handle are in the Privacy Policy.
What we cannot help with
We are not medical professionals and we cannot give advice about your own sleep, health, symptoms or medication. Please do not send us personal medical details — we are not able to act on them.
If you have a persistent sleep problem, speak to your GP or doctor. In the UK you can also call NHS 111. If you are in crisis, contact your local emergency services.
Press and permissions
Happy to hear from journalists and researchers. If you would like to quote or reproduce anything from the site, email us and say what you have in mind.