Last updated: October 20, 2026
This policy explains what information BestTimeToSleep.com (“we”, “us”) collects and how we use it.
Information you enter in our calculators
Times, ages and other values you enter in our calculators are processed in your browser and are not sent to us. If you change settings such as your age group or 12- or 24-hour clock, we save them in your browser’s local storage so they are remembered next time. You can clear them at any time by clearing your browser’s site data.
Contact form
If you use our contact form, we receive your name, email address and message by email and use them only to reply to you. We keep messages for as long as needed to deal with your request, then delete them.
Cookies and advertising
We use Google AdSense to show ads. Google and its partners may use cookies or similar technologies to show ads based on your visits to this and other websites. You can opt out of personalised advertising at Google Ads Settings or aboutads.info. Read how Google uses information from sites that use its services. Where required by law, for example in the EU, UK and Switzerland, we ask for your consent before personalised ads are shown.
Analytics
We may use Google Analytics to understand how visitors use the site, such as which pages are popular. This uses cookies and collects information like pages viewed, device type and approximate location. It does not tell us who you are.
Server logs and hosting
Our site is hosted by Hostinger. Like most websites, our servers automatically log technical information such as IP addresses, browser type and pages requested, for security and to keep the site running. Fonts are loaded from Google Fonts, which receives your IP address to deliver them.
Your rights
Depending on where you live, you may have the right to access, correct or delete personal information we hold about you, or to object to how we use it. To make a request, email hello@besttimetosleep.com.
Children
Our site is meant for adults, including parents. We do not knowingly collect personal information from children under 13.
Changes
We may update this policy from time to time. The date at the top shows when it was last changed.
Contact
Questions about privacy? Email hello@besttimetosleep.com.