Health Calculators

Race Time Calculator – 1 Mile at 5 min/km Estimates 1 Mile finish time at a 5 minute-per-kilometer pace. Enter the distance and pace. Educational estimate only. Open calculator → Race Time Calculator – 3K at 5 min/km Estimates 3K finish time at a 5 minute-per-kilometer pace. Enter the distance and pace. Educational estimate only. Open calculator → Race Time Calculator – Half Marathon at 5 min/km Estimates Half Marathon finish time at a 5 minute-per-kilometer pace. Enter the distance and pace. Educational estimate only. Open calculator → Sleep Cycle Calculator – Wake at 07:00 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-Hour Target Calculates weekly sleep debt against a 6-hour nightly target. Enter the average sleep and target sleep. Educational estimate only. Open calculator → Sleep Duration Calculator – 7 Hours from 00:00 Calculates an approximate wake time after 7 hours of sleep starting at 00:00. Enter the sleep duration and bedtime. Educational estimate only. Open calculator → TDEE Calculator for Hiker Estimates daily energy expenditure for a hiker using Mifflin-St Jeor BMR and a selectable activity level. Enter the sex and age. Educational estimate only. Open calculator → TDEE Calculator – Age 22 – Sedentary Estimates total daily energy expenditure at age 22 using Mifflin-St Jeor BMR and a sedentary activity factor. Enter the sex and age. Educational estimate only. Open calculator → TDEE Calculator – Age 34 – Moderately Active Estimates total daily energy expenditure at age 34 using Mifflin-St Jeor BMR and a moderately active activity factor. Enter the sex and age. Educational estimate only. Open calculator → TDEE Calculator – Age 44 – Sedentary Estimates total daily energy expenditure at age 44 using Mifflin-St Jeor BMR and a sedentary activity factor. Enter the sex and age. Educational estimate only. Open calculator → TDEE Calculator – Age 54 – Very Active Estimates total daily energy expenditure at age 54 using Mifflin-St Jeor BMR and a very active activity factor. Enter the sex and age. Educational estimate only. Open calculator → Calorie Calculator for Weight Loss Estimates daily calorie needs for weight loss planning from Mifflin-St Jeor BMR and activity. Enter the sex and age. Educational estimate only. Open calculator →