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
Calculate your Body Mass Index (BMI) to determine if you’re at a healthy weight. Metric (kg, cm) Imperial (lbs, in) Age: years Height: cm Weight: kg Height: ft in Weight: lbs Calculate BMI Clear What Your BMI Means BMI Classification <18.5 Underweight 18.5-24.9 Healthy Weight 25-29.9 Overweight 30-34.9 Obese (Class I) 35-39.9 Obese (Class II) … Read more
Find out when to go to sleep or wake up based on your preferred sleep duration. I want to know when to go to sleep I want to know when to wake up I need to wake up at: I want to sleep for: 0123456789101112131415161718192021222324 hours 0153045 minutes I want to go to bed at: … Read more
Caffeine is one of the most popular stimulants globally, helping millions of people kickstart their day or stay alert during a long work shift. But have you ever wondered, how long does it actually take for caffeine to wear off? The truth is, the duration of caffeine’s effects varies from person to person based on … Read more
Choosing the perfect mattress is more than just a matter of comfort—it’s an investment in your health and well-being. With so many options available, it can be overwhelming to know where to begin. Whether you’re dealing with back pain, struggling to get quality sleep, or simply looking for something new, finding the right mattress is … Read more
Falling asleep may seem like a simple, natural process, but for many, it’s anything but easy. If you’ve ever laid in bed, staring at the ceiling, wondering why you can’t drift off, you’re not alone. On average, it takes most people around 10 to 20 minutes to fall asleep. However, this time can vary based … Read more