About HealthCalc

Our Mission

HealthCalc was created with a simple goal: to provide everyone with free, accessible, and scientifically accurate health calculation tools. We believe that understanding your body's basic metrics—like Body Mass Index (BMI), Basal Metabolic Rate (BMR), and Total Daily Energy Expenditure (TDEE)—should be straightforward and available to all, without registration, paywalls, or unnecessary complexity.

Our calculators are designed to help you make informed decisions about your health and fitness goals. Whether you're trying to lose weight, gain muscle, maintain your current physique, or simply understand your body better, our tools provide the foundational metrics you need.

Science-Backed Formulas

All of our calculators are built on validated scientific formulas and international health standards:

BMI Calculator

Our BMI (Body Mass Index) calculator uses the standard formula adopted by the World Health Organization (WHO). BMI is calculated by dividing your weight in kilograms by the square of your height in meters. The classification categories (underweight, normal weight, overweight, obese) follow WHO guidelines, which are recognized internationally as screening tools for weight-related health risks.

BMR Calculator

Our BMR (Basal Metabolic Rate) calculator implements the Mifflin-St Jeor equation, which is considered one of the most accurate formulas for estimating resting energy expenditure. This equation was developed through extensive research and has been validated across diverse populations. It accounts for your weight, height, age, and biological sex to estimate the number of calories your body burns at complete rest.

TDEE Calculator

Our TDEE (Total Daily Energy Expenditure) calculator builds upon your BMR by applying the Harris-Benedict activity multipliers. These multipliers account for different levels of physical activity, from sedentary lifestyles to very active routines. The result tells you approximately how many calories you burn per day, including all activities, which is essential for planning dietary needs for weight loss, maintenance, or gain.

Our Commitment to You

Privacy First: All calculations are performed entirely in your web browser. We do not collect, store, or transmit your personal health data. Your information never leaves your device.

No Registration Required: Use all our calculators instantly without creating an account, providing an email address, or sharing any personal information.

Completely Free: Our tools are free to use, now and always. We believe health information should be accessible to everyone.

Ad-Supported: To keep our service free, we display ads through Google AdSense. We carefully balance monetization with user experience, ensuring ads don't interfere with the functionality of our calculators.

Continuous Improvement

We are committed to maintaining and improving HealthCalc. We regularly review the latest research in health and nutrition science to ensure our calculators remain accurate and up-to-date. User feedback helps us identify areas for improvement and new features that would benefit our community.