Health Calculators

Hydration Calculator – Weekly Estimate daily fluid needs from weight and activity. This variant is framed for weekly use. Enter the body weight and fluid per kg. Educational estimate only. Open calculator → Macro Calculator – Intermediate Macro Calculator for intermediate planning; calculates the result from the inputs displayed on the calculator. Enter the daily calories and protein. Educational estimate only. Open calculator → Maximum Heart Rate Calculator for Age 27 Estimates maximum heart rate for age 27 using an age-based formula. Enter the age. Educational estimate only. Open calculator → Maximum Heart Rate Calculator for Age 43 Estimates maximum heart rate for age 43 using an age-based formula. Enter the age. Educational estimate only. Open calculator → Maximum Heart Rate Calculator for Age 59 Estimates maximum heart rate for age 59 using an age-based formula. Enter the age. Educational estimate only. Open calculator → Maximum Heart Rate Calculator for Age 75 Estimates maximum heart rate for age 75 using an age-based formula. Enter the age. Educational estimate only. Open calculator → Ovulation Calculator – 32-Day Cycle Estimates an ovulation day and fertile-window timing for a 32-day cycle using calendar arithmetic. Enter the cycle length and first day of last period. Educational estimate Open calculator → Pace Calculator – Training Day Pace Calculator for training day planning; calculates the result from the inputs displayed on the calculator. Enter the distance and time. Educational estimate only. Open calculator → Protein Calculator – 105 kg – 2.0 g/kg Calculates a daily protein target for a 105 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 – 135 kg – 1.2 g/kg Calculates a daily protein target for a 135 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 – 50 kg – 1.6 g/kg Calculates a daily protein target for a 50 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 – 75 kg – 2.0 g/kg Calculates a daily protein target for a 75 kg body weight using a 2.0 g/kg target. Enter the body weight and protein per kg. Educational estimate only. Open calculator →