Health Calculators

Maximum Heart Rate Calculator for Age 55 Estimates maximum heart rate for age 55 using an age-based formula. Enter the age. Educational estimate only. Open calculator → Maximum Heart Rate Calculator for Age 71 Estimates maximum heart rate for age 71 using an age-based formula. Enter the age. Educational estimate only. Open calculator → Ovulation Calculator – 24-Day Cycle Estimates an ovulation day and fertile-window timing for a 24-day cycle using calendar arithmetic. Enter the cycle length and first day of last period. Educational estimate Open calculator → Pace Calculator – Intermediate Pace Calculator for intermediate planning; calculates the result from the inputs displayed on the calculator. Enter the distance and time. Educational estimate only. Open calculator → Protein Calculator – 100 kg – 1.6 g/kg Calculates a daily protein target for a 100 kg body weight using a 1.6 g/kg target. Enter the body weight and protein per kg. Educational estimate only. Open calculator → Protein Calculator – 125 kg – 2.0 g/kg Calculates a daily protein target for a 125 kg body weight using a 2.0 g/kg target. Enter the body weight and protein per kg. Educational estimate only. Open calculator → Protein Calculator – 45 kg – 1.2 g/kg Calculates a daily protein target for a 45 kg body weight using a 1.2 g/kg target. Enter the body weight and protein per kg. Educational estimate only. Open calculator → Protein Calculator – 70 kg – 1.6 g/kg Calculates a daily protein target for a 70 kg body weight using a 1.6 g/kg target. Enter the body weight and protein per kg. Educational estimate only. Open calculator → Protein Calculator – 95 kg – 2.0 g/kg Calculates a daily protein target for a 95 kg body weight using a 2.0 g/kg target. Enter the body weight and protein per kg. Educational estimate only. Open calculator → Race Time Calculator – 1 Mile at 8 min/km Estimates 1 Mile finish time at a 8 minute-per-kilometer pace. Enter the distance and pace. Educational estimate only. Open calculator → Race Time Calculator – 3K at 8 min/km Estimates 3K finish time at a 8 minute-per-kilometer pace. Enter the distance and pace. Educational estimate only. Open calculator → Race Time Calculator – Half Marathon at 8 min/km Estimates Half Marathon finish time at a 8 minute-per-kilometer pace. Enter the distance and pace. Educational estimate only. Open calculator →