This is a sleep cycle duration calculator and can help you stay active throughout the day. So plan your sleep or wake time using a 90-minute sleep cycle for better rest.
This is a sleep cycle tool that helps you plan your sleep or wake-up times based on the science of sleep cycles duration. So, by aligning your sleep with 90-minute cycles, you can wake up feeling more refreshed and energized.
A sleep cycle is the natural progression through different stages of sleep that repeats throughout the night. Each cycle lasts around 90 minutes and consists of four stages: three non-REM stages and one REM stage.
This calculator is designed for the 12-hour AM/PM time format that is used in the United States and some other countries.
1. Select the time you want to wake up or go to bed using the time picker.
2. Choose whether you want to calculate Wake-up Times or Bedtime.
3. Click the Calculate button to see the results.
4. The results will show you the optimal times to wake up or go to bed based on 90-minute sleep cycles.
Sleep cycles last about 90 minutes and consist of multiple stages, including light sleep, deep sleep, and REM sleep. And waking up at the end of a sleep cycle (after 90 minutes) can help you feel more refreshed and alert.
This calculator helps you plan your sleep or wake-up times by aligning them with the end of a sleep cycle.