Health Calculators

19 calculators

The Health category gathers calculators for tracking common body indicators, like body mass index (BMI) or an estimate of your daily calorie needs shown as a range rather than a single number.

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These tools are designed to inform, never to replace the advice of a healthcare professional — a warning appears on every page. The section also covers sleep (ideal bedtime by cycles) and estimated due date, and will keep growing with other common medical indicators.

Body size & weight

BMI, body fat, and waist circumference.

BMI Calculator (Body Mass Index)Body Fat Percentage Calculator (US Navy Method)Ideal Body Weight Calculator (Devine Formula)Predicted Adult Height Calculator (Mid-Parental Method)Waist-to-Hip Ratio Calculator

Vital signs

Blood pressure, blood alcohol, and calories.

Alcohol Units Calculator Basal Metabolic Rate (BMR) Formula Comparison Calculator Blood Alcohol Content Calculator (Widmark Formula)Blood Pressure Category Calculator Daily Calorie Needs Calculator Glomerular Filtration Rate (eGFR) Calculator Maximum Heart Rate Formula Comparison Calculator Resting Heart Rate Calculator Shock Index Calculator Total Blood Volume Calculator

Physiology

Heart rate, metabolism, and body surface area.

Body Surface Area Calculator (BSA)

Sleep & pregnancy

Bedtime, sleep, and due date.

Estimated Due Date Calculator (Naegele's Rule)Pregnancy Calorie Needs Calculator Sleep Needs by Age Calculator