Health Calculators

Sleep Cycle Calculator – Wake at 06:00 Calculates approximate sleep duration from a chosen number of sleep cycles; it is a timing estimate, not a medical sleep assessment. Enter the sleep cycles and wake time. Open calculator → Sleep Debt Calculator – 6 Hours Sleep / 9 Hour Target Calculates weekly sleep debt when average sleep is 6 hours against a 9-hour target. Enter the average sleep and target sleep. Educational estimate only. Open calculator → Sleep Duration Calculator – 6 Hours from 23:00 Calculates an approximate wake time after 6 hours of sleep starting at 23:00. Enter the sleep duration and bedtime. Educational estimate only. Open calculator → TDEE Calculator for Cyclist Estimates daily energy expenditure for a cyclist using Mifflin-St Jeor BMR and a selectable activity level. Enter the sex and age. Educational estimate only. Open calculator → TDEE Calculator – Age 22 – Moderately Active Estimates total daily energy expenditure at age 22 using Mifflin-St Jeor BMR and a moderately active activity factor. Enter the sex and age. Educational estimate only. Open calculator → TDEE Calculator – Age 32 – Very Active Estimates total daily energy expenditure at age 32 using Mifflin-St Jeor BMR and a very active activity factor. Enter the sex and age. Educational estimate only. Open calculator → TDEE Calculator – Age 44 – Moderately Active Estimates total daily energy expenditure at age 44 using Mifflin-St Jeor BMR and a moderately active activity factor. Enter the sex and age. Educational estimate only. Open calculator → TDEE Calculator – Age 54 – Sedentary Estimates total daily energy expenditure at age 54 using Mifflin-St Jeor BMR and a sedentary activity factor. Enter the sex and age. Educational estimate only. Open calculator → Calorie Calculator for Maintenance Calculate with the calorie calculator for maintenance. See the formula, inputs, worked example, and practical guidance. Open calculator → 1RM Calculator – 12 Rep Estimate Calculate with the 1rm calculator – 12 rep estimate. See the formula, inputs, worked example, and practical guidance. Open calculator → 1RM Calculator – 17 Reps – Brzycki Calculate with the 1rm calculator – 17 reps – brzycki. See the formula, inputs, worked example, and practical guidance. Open calculator → 1RM Calculator – 23 Rep Estimate Calculate with the 1rm calculator – 23 rep estimate. See the formula, inputs, worked example, and practical guidance. Open calculator →