REM Sleep Cycle Calculator Find your ideal bedtime based on your desired wake-up time and optimize your sleep cycles for better rest and more energy. This REM Sleep Cycle Calculator helps you find the optimal time to go to bed based on sleep cycles. Each sleep cycle lasts approximately 90 minutes and consists of different … Read more
Sleep Apnea Risk Assessment Calculator Assess your risk of obstructive sleep apnea (OSA) using the validated STOP-BANG questionnaire. Answer all 8 questions to calculate your risk level. The STOP-BANG questionnaire is a screening tool for obstructive sleep apnea (OSA) that evaluates eight risk factors. Each “Yes” answer contributes 1 point to your total score. Score … Read more
Jet Lag Recovery Calculator Calculate how long it might take to recover from jet lag based on your travel details, including flight duration, time zones crossed, and direction of travel. This calculator uses two methods to estimate jet lag recovery time: ICAO Formula: d = u + 2(z – 3) + v + a/10 Where: … Read more
Melatonin Timing Calculator Determine the optimal time and dosage for taking melatonin supplements based on your specific needs and circumstances. What’s your reason for taking melatonin? Select reason…Trouble falling asleepJetlag, eastbound (e.g., US to Europe)Jetlag, westbound (e.g., Europe to US)Insomnia in blind peopleBeta-blockers insomniaEndometriosis Medication type Select type…Tablets / capsulesLiquidSprayStrips Tablet/Dose Strength Select strength…0.3 mg0.5 … Read more
Chronotype Calculator Discover your natural chronotype using the Munich Chronotype Questionnaire (MCTQ) approach. Find out if you’re a night owl, early bird, or somewhere in between based on your natural sleep patterns. How many days per week do you work? days Your work days are days with social obligations that affect your sleep schedule. Work … Read more
Caffeine Half-Life Calculator Calculate how caffeine is metabolized by your body over time, and discover when it’s safe to sleep without affecting your sleep quality. Note: This calculator uses the half-life formula C(t) = C₀ * (1/2)^(t/h) to estimate the amount of caffeine remaining in your system over time. The average half-life for caffeine is … Read more
Sleep Efficiency Calculator Calculate your sleep efficiency to better understand your sleep quality and make improvements to your sleep schedule. Note: This calculator uses the Duration of Sleep Episode (DSE) formula for more accurate sleep efficiency calculation: SE = TST / DSE (× 100), where DSE includes only time spent attempting to sleep, not other … Read more
Ideal Bedtime Calculator Find your perfect bedtime based on sleep science. Wake up refreshed by aligning with your natural sleep cycles and age-specific recommendations. Your age group: Infant (0-12 months)Toddler (1-2 years)Preschooler (3-5 years)School-age (6-12 years)Teenager (13-18 years)Adult (18+ years) What time do you need to wake up? How long does it typically take you … Read more
Sleep Debt Calculator Track your sleep debt by comparing your ideal sleep needs with your actual sleep hours. Find out if you’re getting enough rest or accumulating sleep debt. How many hours of sleep do you need per night? hours Most adults need 7-9 hours of sleep per night. Adjust based on your personal needs. … Read more
Ideal Body Weight Calculator Calculate your Ideal Body Weight (IBW), Adjusted Ideal Body Weight, and Body Mass Index (BMI) based on your height, weight, and gender. Unit System: Metric (kg, cm) Imperial (lb, ft/in) Gender: MaleFemale Height: cm Current Weight: kg Height: ft in Current Weight: lb Calculate Clear BMI Categories & Health Implications Understanding … Read more
Pregnancy Due Date Calculator Calculate your expected delivery date (EDD) using one of three methods: Last Menstrual Period (LMP), Conception Date, or IVF Transfer Date. Calculation Method: Last Menstrual Period (LMP)Conception DateIVF Transfer Date First Day of Last Menstrual Period: Cycle Length (optional): days Conception Date: IVF Transfer Date: Embryo Stage: 3-Day Embryo5-Day Embryo (Blastocyst) … Read more
Calculate your daily calorie needs using the Harris-Benedict formula to maintain your current weight. Metric (kg, cm) Imperial (lbs, in) Male Female Age: years Activity Level: Basal Metabolic Rate (BMR)Sedentary: little or no exerciseLight: exercise 1-3 times/weekModerate: exercise 4-5 times/weekActive: daily exercise or intense exercise 3-4 times/weekVery Active: intense exercise 6-7 times/weekExtra Active: very intense … Read more