Free Online Health
Calculators & Wellness
Tools to Track Your Health
Explore free online health calculators to measure BMI, calories, body fat, pregnancy, heart rate, hydration, nutrition, and more. Fast, accurate, and easy-to-use wellness tools with no registration or download required.
Educational purposes only. These calculators provide estimates and are not a substitute for professional medical advice.
Health & Fitness and Pregnancy Calculators
Free browser‑based calculators for BMI, calories, pregnancy tracking, and more. No registration, no data storage – instant results on any device.
🩺 Health & Fitness Calculators
Our free Health and Fitness Calculators help you monitor body metrics, track workouts, and plan a healthier lifestyle. Whether you want to calculate BMI, daily calories, body fat percentage, or protein needs, our tools deliver accurate results instantly. All calculators are browser‑based, require no registration, and work on any device.
🤰 Pregnancy & Family Planning Tools
Our free Pregnancy Calculators help expectant mothers monitor pregnancy progress, track important dates, and manage health during pregnancy. From conception to delivery, these tools provide accurate calculations to support a healthy pregnancy journey. All tools are private, secure, and completely free.
Why use our tools? Accurate tracking, free forever, mobile friendly, no registration, instant results, and browser‑based – no downloads required.
How to Use
Who Can Use These?
Limitations & Important Warnings
- Educational purposes only. These calculators provide estimates and are not a substitute for professional medical advice.
- Not a diagnostic tool. Results should not be used to diagnose, treat, or prevent any health condition.
- Individual variation. Results may vary based on individual factors such as age, gender, activity level, and overall health.
- Always consult a professional. For personalized guidance, always consult your doctor or a qualified healthcare provider.
- No emergency use. If you are experiencing a medical emergency, call your local emergency number immediately.
Trust & Privacy
All calculations are performed locally in your browser. No personal information is stored or shared.
References
- World Health Organization (WHO) – Body Mass Index classification
- National Institutes of Health (NIH) – Dietary guidelines and health metrics
- American Heart Association – Heart rate and blood pressure standards
- Centers for Disease Control and Prevention (CDC) – Physical activity and nutrition guidelines
- Academy of Nutrition and Dietetics – Protein and calorie recommendations
- World Health Organization (WHO) – Pregnancy and childbirth guidelines
- National Institutes of Health (NIH) – Pregnancy health and nutrition
- American College of Obstetricians and Gynecologists (ACOG) – Pregnancy care standards
- Centers for Disease Control and Prevention (CDC) – Pregnancy and infant health
- March of Dimes – Pregnancy and baby health resources
Editorial Process
The Healthtus editorial team reviews this tool periodically. Review includes:
- Test methodology – Verifying calculation formulas and accuracy
- Educational content – Ensuring clarity and helpfulness of information
- User guidance – Improving instructions and user experience
- Medical references – Updating citations and source links
Frequently Asked Questions
A: Our calculators use established medical and fitness formulas to provide reliable estimates. However, results are estimates only and may vary based on individual factors. Always consult a healthcare professional for personalized advice.
A: No. All our calculators are completely free and require no registration or account creation. You can use them instantly in your browser.
A: No. All calculations are performed locally in your browser. We do not collect, store, or share any personal information.
A: Our tools work on all modern browsers including Chrome, Edge, Firefox, and Safari. They are fully responsive and mobile-friendly, so you can use them on any device.
A: Our editorial team reviews and updates the calculators regularly to ensure accuracy and relevance. The last review was in August 2026.
A: Our pregnancy tools use medically recognized formulas for due dates, ovulation, and fetal growth. However, they are estimates and should not replace professional prenatal care. Always consult your healthcare provider.
A: No registration is required. All tools are free and work directly in your browser without any sign-up.
A: No. All calculations are done locally on your device. We do not store, track, or share any personal or pregnancy-related information.
A: Yes. All pregnancy calculators are fully responsive and work seamlessly on smartphones, tablets, and desktops.
A: Our tools are reviewed regularly and updated to reflect the latest medical guidelines. The most recent review was August 2026.