Get in Touch
Contact Sleep Estimator
We welcome bug reports, suggestions for improvements, and questions about our calculation methodology or privacy approach.
Email support
Please send questions, feedback, or issue reports directly to:
Reporting a calculation issue
If you notice an unexpected calculation result or display problem, including the following details helps us diagnose and fix the issue quickly:
- The calculator mode: Whether you were using "Plan my bedtime" or "Going to bed now".
- The settings used: Your target wake time, sleep goal, time to fall asleep, wind down duration, and clock format (12h or 24h).
- The result received: The specific bedtime, wind down time, or wake time that appeared.
- Your browser and device: For example, Safari on iOS or Chrome on Windows.
Privacy note
You do not need to share personal health details or medical information when writing to us. Sleep Estimator is a mathematical planning utility, and technical schedule details are sufficient for all support inquiries.
Questions about formulas or research?
To learn how our calculations subtract sleep latency and wind down time or manage midnight schedule transitions, review our complete calculation methodology page.