Contact us
We'd love to hear from you — whether it's feedback on the calculator, a correction, a partnership idea, or a privacy request.
The best way to reach us is by email:
We read every message and aim to reply within a few business days.
What to write about
- Feedback & corrections — spot something off in a calculation or an article? Let us know.
- Privacy requests — to access, delete, or opt out of data use under GDPR or CCPA, see our Privacy & Cookie Policy and email us with your request.
- Advertising & partnerships — for ad, sponsorship, or content inquiries.
- Translations — the site is available in English, Español, Deutsch, and Português; tell us if you'd like another language.
Please note
We cannot provide personal medical or sleep-health advice. Sleep Calculator is for general information only and is not a substitute for professional care. If you have a sleep disorder or a medical concern, please consult a qualified healthcare professional.