Sleep Cycle Calculator

Scientifically calculate body mass index, assess health status, and provide professional health advice.

Scientifically manage daily water intake, develop healthy drinking habits, and protect your health. Provides water intake level selection, health standard reference, progress tracking and visual trend analysis.

Calculate your recommended sleep duration based on American Academy of Sleep Medicine (AASM) guidelines. Provides optimal sleep time ranges for different age groups and practical suggestions to help improve sleep quality.

Based on the 90-minute sleep cycle theory, scientifically calculate optimal sleep and wake times. Provides two calculation modes: set wake up time to calculate optimal sleep time, or calculate optimal wake up time based on current time, helping you get quality sleep.

Scientifically calculate daily calorie needs based on age, gender, weight, height, and activity level, providing personalized nutrition advice and macronutrient distribution.