Get a clear picture of your wellbeing with accurate and easy-to-use tools.
Medically reviewed by Dr. Ivan Ibáñez García
Making informed decisions about your health starts with reliable data. Validated health calculators turn simple measurements — such as your weight, height, age, and activity level — into the same indicators that healthcare professionals rely on every day. Instead of guessing, you get personalized values that reflect your actual situation and help you set realistic goals, whether you are managing your weight, adjusting your calorie intake, or understanding how fast you are aging.
At CalcVita, every tool is built on standards published by leading health authorities including the WHO and the NIH. The formulas we use — among them Mifflin-St Jeor for energy expenditure and WHO growth charts for pediatrics — come from peer-reviewed research and are updated whenever new evidence emerges. Our calculators span nutrition (BMI, TDEE, macronutrients), reproductive health (pregnancy calculator), pediatric growth tracking, and longevity markers such as biological age and body inflammation.
It is important to remember that no calculator replaces clinical judgment. All of our results include clear reference ranges together with a recommendation to discuss them with your doctor. Dr. Ivan Ibanez, a specialist in integrative health, oversees the scientific rigor of every tool to ensure the information is accurate, current, and genuinely useful on your path to better wellbeing.
CalcVita currently offers more than 25 free tools covering the full spectrum of health: from weight management (BMI, body fat, ideal weight) and metabolic health (TDEE, calorie needs, macronutrients) to reproductive health (pregnancy due date, ovulation), sleep optimization, and specialized assessments for conditions such as lipedema. All calculators run instantly in your browser with no registration required, so you can get the information you need and share it with your care team the same day.
Fill in basic fields such as age, weight, height, and activity level. Each calculator asks only for the variables it needs.
Our algorithms apply validated clinical formulas and return personalized values in under one second.
Receive clear reference ranges, contextual explanations, and practical suggestions to discuss with your healthcare provider.
Every CalcVita calculator uses evidence-based formulas — including Khamis-Roche for adult height prediction, Mifflin-St Jeor for energy expenditure, and WHO growth standards for pediatrics. All clinical content is reviewed by Dr. Ivan Ibáñez García, a licensed physician with 23+ years of experience in integrative health. Our team regularly reviews the latest peer-reviewed literature to keep every tool accurate and up to date.
Plain-language articles with visuals so you can use every calculator with confidence.
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