Health Calculators

Our health calculator hub covers body composition, calories and metabolism, heart rate, wellness screening, and pregnancy and baby estimates.

Wellness and Screening 3 uses

HbA1c to Average Glucose Calculator

This HbA1c calculator converts an A1c percentage into estimated average glucose (eAG), the average blood sugar…

Calorie and Metabolism 3 uses

Weight Gain Calculator

This weight gain calculator finds the daily calorie surplus needed to gain a target amount of…

Heart Rate 2 uses

Blood Pressure Category Calculator

This blood pressure calculator classifies a reading into the standard categories from your systolic and diastolic…

Wellness and Screening 4 uses

Intermittent Claudication Screening Calculator

This intermittent claudication calculator helps check whether calf or leg pain that comes on with walking…

Wellness and Screening 3 uses

Nicotine Dependence Score Calculator

This nicotine dependence calculator produces a screening score that reflects how strongly someone may depend on…

Wellness and Screening 3 uses

Drug Abuse Screening Score Calculator

This drug abuse screening calculator gives a screening score for problematic substance use, based on a…

Calorie and Metabolism 3 uses

Turkey Club Sandwich Calorie Calculator

This turkey club calorie calculator estimates the calories in a turkey club sandwich by adding up…

Body Composition 3 uses

Ideal Body Proportions Calculator

This ideal body proportions calculator gives classic golden-ratio targets — such as the shoulder-to-waist ratio —…

Calorie and Metabolism 1 use

Calories Per Meal Calculator

This calories per meal calculator splits your daily calorie target evenly across your meals, so you…

Calorie and Metabolism 2 uses

Daily Water Intake Calculator

This water intake calculator estimates how much water you should drink each day, based on your…

Body Composition 1 use

Full Body Analysis Calculator

This body analysis calculator brings several health metrics together — BMI, estimated body fat, BMR, and…

About Health Calculators

Our health calculator hub covers body composition, calories and metabolism, heart rate, wellness screening, and pregnancy and baby estimates. Pick a tool below for an instant estimate, with the formula and a clear example on each page.

These tools turn your measurements into useful numbers such as body-fat percentage, BMR, calorie needs, and target heart rate. Results are estimates for general guidance and education, not a diagnosis; always talk to a professional for medical decisions.

Browse the calculators

Body Composition Calculators

Calorie and Metabolism Calculators

Heart Rate Calculators

Wellness and Screening Calculators

Pregnancy and Baby Calculators

Frequently Asked Questions

What can I work out with these health tools?

Body-fat, lean mass, ideal weight, BMI, BMR and calorie needs, target and maximum heart rate, and related estimates. Each calculator covers one task with its formula and an example.

Are these health calculators accurate?

They use established formulas such as Mifflin-St Jeor and the Navy body-fat method, but results are estimates for guidance only and do not replace advice from a qualified professional.

Are the health calculators free to use?

Yes. Every tool on this page is free, needs no signup, and works on mobile and desktop.

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