Tools
๐ŸŒ™ Sleep Calculatorโ— Live ๐Ÿฆ‰ Flip the Clockโ— Live โœˆ๏ธ Jet Lag Calculatorโ— Live ๐Ÿ’‘ Couples Sleep Syncโ— Live ๐Ÿ”‹ Sleep Debt Recoveryโ— Live ๐Ÿฅ Shift Rotation Plannerโ— Live
Learn
๐Ÿงฌ How Sleep Cycles Work ๐Ÿ“š Sleep Science Deep Dive โ“ FAQ

๐Ÿ”’ Your data

Privacy Policy

Last updated: May 2026

The short version

We collect almost nothing. We don't make you create an account, and your calculator inputs never leave your device. Use the tools, get your answer, leave. That's it.

What we collect

Analytics (anonymous): We may use privacy-respecting analytics to see which pages get visited, so we know what to improve. This doesn't identify you personally.

Calculator inputs: Your wake-up time, age group, shift hours, and similar inputs are processed entirely in your browser. They never reach our servers โ€” we don't store them, see them, or sell them.

What we DON'T do

โ€ข Sell your personal data to third parties
โ€ข Track you across the wider web for our own profiling
โ€ข Require an account or collect your name to use the tools
โ€ข Let advertising compromise the accuracy of our calculators

Monetization status: BestSleepCalc is currently free and ad-free. As the site grows, we plan to add a modest amount of advertising โ€” which may include display ads and affiliate links โ€” to support its upkeep. When that happens, our advertising partners may set their own cookies, and some links may earn us a commission at no extra cost to you. We'll update this policy with the specifics and show a clear notice before any of it goes live.

Your rights (GDPR & CCPA)

Even though we collect very little, you have full rights under GDPR (Europe), CCPA (California), and equivalents. You can request access to any data we hold, correction, deletion, or a portable copy. Email wakeup@bestsleepcalc.com and we'll respond within 30 days.

Cookies

Today we don't set our own tracking cookies. When we introduce advertising, our partners (for example, an ad network or affiliate program) may set cookies to measure performance โ€” and we'll add a cookie-consent notice and the details here before that begins. You'll always be able to see what's active.

Children

We don't knowingly collect data from anyone under 13. Our teen calculator bracket (13โ€“17) captures no personally identifiable information.

Contact

Questions about your privacy? Reach us anytime at wakeup@bestsleepcalc.com.