About Health Calculator
Free, evidence-based health calculators for everyone — with complete privacy protection.
What We Do
Health Calculator is a free web service that lets anyone check their key health indicators instantly. No registration, no subscriptions, no data collection. Enter your numbers, get evidence-based results and personalized guidance, and leave knowing your data never left your device.
We offer 8 specialized calculators covering the most important everyday health metrics, all built on internationally validated medical formulas and guidelines.
Our Calculators (8 Tools)
WHO-standard body mass index with weight category classification and healthy weight guidance.
Calculates BMR and Total Daily Energy Expenditure using the Mifflin-St Jeor equation.
Estimates biological age based on 8 lifestyle factors including exercise, sleep, and diet.
10-question psychological assessment measuring current stress level with self-care recommendations.
Classifies blood pressure using AHA 2017 guidelines and provides cardiovascular health tips.
Estimates ovulation date, fertile window, next period, and due date from your last period.
Estimates blood alcohol concentration using the Widmark formula with safe driving guidance.
WHO pediatric growth standards for height/weight percentile and predicted adult height.
Our Principles
🔒 Complete Privacy
All health data you enter is processed entirely within your browser. Nothing is ever sent to a server, stored in a database, or shared with third parties.
📐 Evidence-Based Calculations
We use only internationally validated medical formulas: WHO (BMI, growth), AHA (blood pressure), Mifflin-St Jeor (calories), and Widmark (BAC).
🌍 Multilingual
Available in Korean, English, Japanese, Chinese, and Spanish so more people can access accurate health information in their native language.
📱 Mobile-First Design
Designed from the ground up for smartphones, making health checking easy wherever you are.
Contact
For feedback, bug reports, or privacy inquiries, please reach out via email:
contact@checkhealthscore.com⚕️ Medical Disclaimer: All calculator results on this site are for general informational and educational purposes only. They do not constitute medical advice and cannot replace consultation with a qualified healthcare professional. Always consult a doctor or specialist before making health-related decisions.