Sleep Calculator is a web-based tool that helps users determine the best time to go to bed or wake up based on sleep cycles. It calculates REM sleep and ideal sleep times to help users wake up refreshed. Key features include: Sleep Cycle Calculation: Determines optimal bedtime and wake-up times based on 90-minute sleep cycles. Wake-Up Time Suggestions: Provides multiple wake-up time options to fit various schedules. Bedtime Suggestions: Calculates ideal bedtimes based on a desired wake-up time. Ideal for: Students looking to optimize their sleep schedule for better focus. Professionals seeking to improve their sleep quality and productivity. Anyone struggling to wake up feeling refreshed. Sleep Calculator offers a simple and accessible way to understand and optimize your sleep patterns, leading to improved energy levels and overall well-being. It's a free tool, making it accessible to everyone.