Contact

Questions about Sleep Calculator Tool, feedback on the calculator, or ideas for collaboration are welcome. This is a small, independent project—responses may take a few days.

How to reach us

What to include in your message

Helpful details: which mode you used (wake time, bedtime, or sleep now), your browser and device if something looked wrong, and whether you expect a reply. We cannot give medical advice by email.

Bug reports and feature ideas

If you notice incorrect times, a display issue on a specific screen size, or a wording fix, send a short description and, if possible, a screenshot. Feature requests are read even if we cannot implement every one.

Privacy and email

Email you send to us is used only to respond to your inquiry. We do not sell email addresses. For broader data practices, read the Privacy Policy.