Health Calculators

Race Time Calculator – 1 Mile at 9 min/km Estimates 1 Mile finish time at a 9 minute-per-kilometer pace. Enter the distance and pace. Educational estimate only. Open calculator → Race Time Calculator – 3K at 9 min/km Estimates 3K finish time at a 9 minute-per-kilometer pace. Enter the distance and pace. Educational estimate only. Open calculator → Race Time Calculator – Half Marathon at 9 min/km Estimates Half Marathon finish time at a 9 minute-per-kilometer pace. Enter the distance and pace. Educational estimate only. Open calculator → Sleep Debt Calculator – 4 Hours Sleep / 7 Hour Target Calculates weekly sleep debt when average sleep is 4 hours against a 7-hour target. Enter the average sleep and target sleep. Educational estimate only. Open calculator → Sleep Debt Calculator – 7 Hours Sleep / 9 Hour Target Calculates weekly sleep debt when average sleep is 7 hours against a 9-hour target. Enter the average sleep and target sleep. Educational estimate only. Open calculator → Sleep Duration Calculator – 7 Hours from 23:00 Calculates an approximate wake time after 7 hours of sleep starting at 23:00. Enter the sleep duration and bedtime. Educational estimate only. Open calculator → TDEE Calculator for Runner Estimates daily energy expenditure for a runner using Mifflin-St Jeor BMR and a selectable activity level. Enter the sex and age. Educational estimate only. Open calculator → TDEE Calculator – Age 24 – Very Active Estimates total daily energy expenditure at age 24 using Mifflin-St Jeor BMR and a very active activity factor. Enter the sex and age. Educational estimate only. Open calculator → TDEE Calculator – Age 36 – Sedentary Estimates total daily energy expenditure at age 36 using Mifflin-St Jeor BMR and a sedentary activity factor. Enter the sex and age. Educational estimate only. Open calculator → TDEE Calculator – Age 46 – Very Active Estimates total daily energy expenditure at age 46 using Mifflin-St Jeor BMR and a very active activity factor. Enter the sex and age. Educational estimate only. Open calculator → Sleep Debt Calculator – 9-Hour Target Calculates weekly sleep debt against a 9-hour nightly target. Enter the average sleep and target sleep. Educational estimate only. Open calculator → Pregnancy Due Date Calculator – Conception Date Estimates a pregnancy due date from conception date using standard calendar date arithmetic. Enter the conception date. Educational estimate only. Open calculator →