Hi Product Hunt! 👋 I built Sleep Cycle Calculator as a free browser-based tool for people who want a simple way to plan their sleep schedule. Instead of having separate tools for different sleep questions, I wanted to bring several useful calculators together in one place: 🌙 Bedtime Calculator ⏰ Wake-Up Time Calculator 😴 Nap Calculator ☕ Caffeine Cutoff Calculator 📉 Sleep Debt Calculator 🎂 Recommended Sleep by Age ✅ Sleep Quality Quick Check 🛌 Weekend Recovery Planner ✈️ Jet Lag Adjuster The main calculator uses approximate 90-minute sleep cycles and includes a 15-minute estimated fall-asleep buffer. The goal is to make sleep timing easier to explore without installing an app or creating an account. Try it here: https://www.globaltoolsbox.onlin... I'd love to hear your feedback. Which sleep-related calculator or feature would you like to see added next?

Sleep Cycle Calculator

Find better bedtimes, wake-up times, naps and sleep schedule

Find better bedtimes, wake-up times, naps and sleep schedule