Health Calculators

Sleep Debt Calculator – 5-Hour Target Calculates weekly sleep debt against a 5-hour nightly target. Enter the average sleep and target sleep. Educational estimate only. Open calculator → Sleep Duration Calculator – 6 Hours from 00:00 Calculates an approximate wake time after 6 hours of sleep starting at 00:00. Enter the sleep duration and bedtime. Educational estimate only. Open calculator → Sleep Duration Calculator – 9 Hours from 21:00 Calculates an approximate wake time after 9 hours of sleep starting at 21:00. Enter the sleep duration and bedtime. Educational estimate only. Open calculator → TDEE Calculator – Age 18 – Very Active Estimates total daily energy expenditure at age 18 using Mifflin-St Jeor BMR and a very active activity factor. Enter the sex and age. Educational estimate only. Open calculator → TDEE Calculator – Age 30 – Sedentary Estimates total daily energy expenditure at age 30 using Mifflin-St Jeor BMR and a sedentary activity factor. Enter the sex and age. Educational estimate only. Open calculator → TDEE Calculator – Age 40 – Very Active Estimates total daily energy expenditure at age 40 using Mifflin-St Jeor BMR and a very active activity factor. Enter the sex and age. Educational estimate only. Open calculator → TDEE Calculator – Age 52 – Moderately Active Estimates total daily energy expenditure at age 52 using Mifflin-St Jeor BMR and a moderately active activity factor. Enter the sex and age. Educational estimate only. Open calculator → Sleep Duration Calculator – 8 Hours from 20:00 Calculates an approximate wake time after 8 hours of sleep starting at 20:00. Enter the sleep duration and bedtime. Educational estimate only. Open calculator → 1RM Calculator – 10 Reps – Epley Estimates one-repetition maximum from a 10-rep lift using the Epley formula. Enter the lifted weight and repetitions. Educational estimate only. Open calculator → 1RM Calculator – 16 Rep Estimate Estimates one-repetition maximum from a 16-rep lift using a standard 1RM estimation formula. Enter the lifted weight and repetitions. Educational estimate only. Open calculator → 1RM Calculator – 20 Reps – Brzycki Estimates one-repetition maximum from a 20-rep lift using the Brzycki formula. Enter the lifted weight and repetitions. Educational estimate only. Open calculator → 1RM Calculator – 32 Rep Estimate Estimates one-repetition maximum from a 32-rep lift using a standard 1RM estimation formula. Enter the lifted weight and repetitions. Educational estimate only. Open calculator →