What health and fitness calculators are available?

This category includes BMI, calorie estimation, body fat percentage, pregnancy due date, and calories burned calculators. Each uses standard health formulas.

Are the results medical advice?

No. These calculators provide estimates for informational purposes only. Consult a qualified healthcare professional for personal health decisions.

Which BMI classification system is used?

BMI results use the World Health Organization (WHO) classification: Underweight (< 18.5), Normal (18.5–24.9), Overweight (25–29.9), and Obese (≥ 30).

Health & Fitness Calculators

Calculators for BMI, calorie needs, body fat, pregnancy due date, and exercise. Browse by topic or search the full collection.

Popular health & fitness calculators

High-frequency tools in this category.

BMI Calculator

Health & Fitness

Army Body Fat Calculator

Health & Fitness

Coming soon

Body Fat Calculator

Health & Fitness

Coming soon

Calorie Calculator

Health & Fitness

Coming soon

Calories Burned Calculator

Health & Fitness

Coming soon

Due Date Calculator

Health & Fitness

Coming soon

Browse health & fitness calculators by topic

Start with a planning area, then open the calculator that matches your goal.

3 tools

Body Measurements & Weight

Calculate BMI, body fat percentage, and ideal weight ranges.

BMIArmy Body FatBody Fat

1 tool

Calories & Nutrition

Calculate daily calorie needs and nutritional targets.

Calorie

1 tool

Fitness & Exercise

Calculate calories burned during exercise and physical activity.

Calories Burned

1 tool

Pregnancy & Fertility

Due date, ovulation, and fertility calculators.

Due Date

Body Measurements & Weight

Calculate BMI, body fat percentage, and ideal weight ranges.

3 calculators

BMI Calculator

Calculate your Body Mass Index (BMI) and see your WHO weight category.

Army Body Fat Calculator

Estimate body fat percentage using the US Army tape-measure method.

Coming soon

Body Fat Calculator

Estimate your body fat percentage using body measurements.

Coming soon

Calories & Nutrition

Calculate daily calorie needs and nutritional targets.

1 calculator

Calorie Calculator

Find your daily calorie needs based on age, weight, height, and activity.

Coming soon

Fitness & Exercise

Calculate calories burned during exercise and physical activity.

1 calculator

Calories Burned Calculator

Estimate calories burned during common exercises and activities.

Coming soon

Pregnancy & Fertility

Due date, ovulation, and fertility calculators.

1 calculator

Due Date Calculator

Estimate your baby's due date from the last menstrual period or conception date.

Coming soon

Health & Fitness calculators FAQ

Helpful answers for using the CalculatorNeo health & fitness collection.