Sleep Calculator - Sloth

Get the best sleep with Sleep Time Calculator. Find ideal bed and wake up times instantly based on smart sleep cycles.

Wake up refreshed and fall asleep easier with Sloth Sleep Time Calculator, your simple, science-based guide to better rest. Whether you’re trying to get on a healthier sleep schedule, wake up without grogginess, or simply understand your ideal bedtime, this app helps you plan sleep around your body’s natural rhythms.

Why Sleep Cycles Matter

Your sleep runs in cycles of roughly 90 minutes. Waking up in between cycles can leave you feeling tired, even if you slept for a long time. Sleep Calculator uses this cycle-based approach plus an average 14-minute fall-asleep time to help you choose the best times to go to sleep or wake up. It takes the guesswork out of setting your schedule and increases your chances of waking up clear-headed and energized.

What You Can Do with Sloth Sleep Time Calculator

• Calculate ideal wake up times: Enter when you plan to go to sleep, and instantly get recommended wake times based on 5–6 sleep cycles. • Calculate ideal bedtimes: Enter when you need to wake up, and the app will show the best times to fall asleep to complete full sleep cycles. • Bedtime reminders: Set optional notifications so you never forget when it’s time to wind down for the night. • Dark Mode Support: Designed with a clean, calming interface that automatically adapts to Dark Mode for comfortable night time use. • Helpful FAQs and sleep tips: Explore answers to common questions about sleep cycles, habits, and how to build a routine that improves your rest. Learn practical tips on winding down, improving sleep quality, and understanding how your body’s rhythms work.

Designed for Simplicity

Sleep Time Calculator is built to be quick, intuitive, and calming. No complicated menus, no unnecessary tracking, just accurate cycle-based guidance you can use anytime. Whether you're resetting a schedule after travel, planning your night around an early morning, or just experimenting with new sleep habits, the app makes it easy.

Perfect For: • Students with irregular sleep schedules • Parents juggling early mornings • Shift workers trying to stay balanced • Anyone wanting to feel more rested • People curious about sleep cycles and healthy routines

Sleep Better, Live Better

Quality sleep affects every part of your life, focus, mood, energy, and overall health. Sleep Time Calculator gives you a simple place to start better timing. With the right sleep and wake times, you’re more likely to wake up refreshed, reduce grogginess, and enjoy more consistent energy throughout the day.