Health Tools Hub

Free Health Calculators & Assessments — BMI, Calories, Mental Health & More

Health Tools Hub is your free, evidence-based resource for understanding your body and making smarter health decisions — no doctor's appointment required. Every calculator and assessment on this page is built on established clinical guidelines: CDC and WHO recommendations, validated screening tools like the PHQ-9 and GAD-7, and ADA and AHA risk frameworks. You get the same scoring methods used in clinical practice, explained in plain language. Use the Fitness & Weight Loss tools to track calories, estimate body fat, or plan a weight loss timeline. The Mental Health section includes validated screeners for anxiety, depression, stress, burnout, and sleep problems. Nutrition Tools help you decode food labels, hit your daily fiber and water targets, and manage added sugar intake. The Health Risk section covers blood pressure, cholesterol, diabetes risk, and heart disease risk. Women's Health tools cover everything from ovulation and fertility windows to pregnancy weight gain and menopause symptoms. And the Healthy Lifestyle section helps you measure biological age, screen time, hydration, and daily wellness. All tools are free, require no sign-up, and run entirely in your browser. Results are for informational purposes only and do not replace medical advice.