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Health & Fitness Calculators

Your wellness journey, quantified

3 CalculatorsBody MetricsNutrition TrackingFitness PlanningHealth ScreeningMedical Calculations

Popular Calculators

BMI Calculator

Calculate your Body Mass Index (BMI) and find out if you're at a healthy weight.

BMI = weight(kg) / height(m)²

Use Calculator

Calorie Calculator

Calculate your daily calorie needs based on your age, gender, weight, height, and activity level.

Mifflin-St Jeor Equation

Use Calculator

Browse by Subcategory

Body Measurements

BMI, body fat, BMR, ideal weight, and body composition calculators.

25 calculators

Nutrition

Calories, macros, protein, water intake, and nutrition calculators.

25 calculators

Fitness

Workout, cardio, strength, and exercise calculators.

25 calculators

Weight Loss

Weight loss, calorie deficit, and diet calculators.

15 calculators

Heart Health

Heart rate, blood pressure, and cardiovascular calculators.

15 calculators

Diabetes

Blood sugar, HbA1c, insulin, and diabetes calculators.

12 calculators

Pregnancy

Pregnancy, fertility, ovulation, and due date calculators.

20 calculators

Child Health

Growth, BMI, nutrition, and child development calculators.

15 calculators

Medical

General medical and clinical calculators.

30 calculators

Mental Health

Stress, anxiety, depression, and wellness calculators.

12 calculators

Sleep

Sleep cycles, bedtime, naps, and sleep quality calculators.

10 calculators

Hydration

Water intake and hydration calculators.

8 calculators

Healthy Aging

Life expectancy, biological age, and longevity calculators.

8 calculators

Medication & Pharmacy

Drug dosage, IV flow, infusion, and medication calculators.

20 calculators

Health Unit Conversions

Height, weight, temperature, BMI, and medical unit converters.

20 calculators

All Health & Fitness Calculators

BMI Calculator

Calculate your Body Mass Index (BMI) and find out if you're at a healthy weight.

BMI = weight(kg) / height(m)²

Use Calculator

Calorie Calculator

Calculate your daily calorie needs based on your age, gender, weight, height, and activity level.

Mifflin-St Jeor Equation

Use Calculator

Ideal Body Weight Calculator

Calculate your ideal body weight based on height, gender, and body frame size.

Use Calculator

About Health & Fitness Calculators

Our health & fitness calculators are designed to help you perform complex calculations with ease. Evidence-based calculators for your health and fitness goals

Why Use Our Health & Fitness Calculators?

  • Accuracy: Every calculator is thoroughly tested against known standards
  • Speed: Results are calculated instantly in your browser
  • Privacy: Your data never leaves your device
  • Free: All calculators are completely free with no limitations
  • Mobile Ready: Works perfectly on smartphones, tablets, and desktops

How to Get the Best Results

For the most accurate results, make sure to enter all required values correctly. Pay attention to the units specified for each input field. If you're unsure about any value, use the help text provided with each calculator for guidance.