Health Calculators

QTc Calculator – Bazett Calculates corrected QT interval using the Bazett formula. Enter the qt interval and heart rate. Educational estimate only. Open calculator → Race Time Calculator – 10K at 8 min/km Estimates 10K finish time at a 8 minute-per-kilometer pace. Enter the distance and pace. Educational estimate only. Open calculator → Race Time Calculator – 5K at 8 min/km Estimates 5K finish time at a 8 minute-per-kilometer pace. Enter the distance and pace. Educational estimate only. Open calculator → Race Time Calculator – Marathon at 8 min/km Estimates Marathon finish time at a 8 minute-per-kilometer pace. Enter the distance and pace. Educational estimate only. Open calculator → 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 →