Sleep Calculator

Calculate optimal sleep times to help you get sufficient rest

Optimize your sleep schedule with the Sleep Calculator extension! This intelligent tool helps you calculate perfect bedtimes and wake-up times based on natural sleep cycles, ensuring you wake up refreshed and energized. Key Features:​​ ☑️ ​​Dual Calculation Modes​​ Calculate ideal bedtime based on your desired wake-up time Determine optimal wake-up times if you go to sleep now 🌙 ​​Sleep Cycle Science​​ Uses 90-minute sleep cycle algorithm Recommends 5-6 complete cycles for optimal rest Accounts for 15-minute sleep onset time ⏰ ​​Intuitive Time Picker​​ Elegant day/night (AM/PM) toggle One-tap +/- controls for hours and minutes Direct editable time inputs Modern UI with smooth animations 📊 ​​Smart Recommendations​​ Highlights top 2 "SUGGESTED" times Visual sleep cycle breakdown Clear explanation of sleep science Responsive design for all devices How It Works:​​ 1. Set your desired wake-up time 2. Calculate perfect bedtime options 3. OR - Get immediate wake-up recommendations 4. See science-based sleep cycle calculations Wake up refreshed with precision sleep planning! The Sleep Calculator extension uses chronobiology principles to help you align your sleep with natural body rhythms for maximum energy and productivity.