Our Mission
MyVitalCalc was built with a single purpose: to give everyday people access to the same evidence-based health formulas and reference data that healthcare professionals use — presented clearly, without jargon, and completely free.
Understanding your own numbers — your BMI, your estimated daily calorie needs, your body fat percentage, your blood pressure category — is the first step toward having more informed conversations with your doctor, setting realistic health goals, and making sense of information you encounter in the news or from your care team.
We pull our reference data from authoritative sources including the World Health Organization (WHO), the Centers for Disease Control and Prevention (CDC), the American Heart Association (AHA), the National Sleep Foundation (NSF), the NIH Office of Dietary Supplements, and peer-reviewed research published in clinical nutrition and exercise science journals. Every formula and every reference range is cited within each calculator page.
What MyVitalCalc Provides
MyVitalCalc offers twelve free calculators and reference tools covering body composition, nutrition, sleep, cardiovascular health, and more:
Every result produced by MyVitalCalc's calculators is a mathematical estimate based on population-level formulas and generalized reference data. These estimates cannot account for your individual physiology, medical history, medications, genetic factors, or any other personal circumstances that a qualified clinician would consider.
Nothing on MyVitalCalc constitutes medical advice, diagnosis, or treatment. MyVitalCalc's content is intended solely for general informational and educational purposes. If you have questions or concerns about your health, please consult a qualified healthcare professional — a doctor, registered dietitian, certified exercise physiologist, or other licensed provider appropriate to your situation.
Never delay seeking professional medical care because of something you read or calculated on this website.
Please read our full Medical Disclaimer before using MyVitalCalc's tools.
How This Site Works
MyVitalCalc is a static website — there is no server, no account creation, and no transmission of your health data anywhere. All calculations happen entirely within your web browser using JavaScript. The only data stored beyond your current session is the blood pressure reading log on the blood pressure reference page, which is saved exclusively to your own device's browser storage and is never transmitted anywhere.
The site is funded by advertising (Google AdSense) and affiliate partnerships with health-related products and services. These relationships do not influence the accuracy of our reference data or the results of our calculators. We only recommend products that are broadly relevant to the health topics covered on each page. Affiliate links are provided as a convenience — you are never required to click them or make a purchase.