Free health toolsthat work in seconds
Ovulation and due date calculators, anxiety screening, med interaction checks, and more — for trying to conceive, pregnancy, or everyday health. No signup required.
Popular health checks
Ovulation, pregnancy due dates, anxiety, meds — the tools people search for most. Private on your phone, easy to use with a doctor.
Ovulation Calculator
When are you most fertile? Find your window in seconds — stays on your device
PregnancyDue Date Calculator
Pregnant? Get your due date and trimester timeline from your last period
Mental healthAnxiety Test
2-minute GAD-7 screen — helpful whether you're 18 or 68
SleepSleep Calculator
Find your ideal bedtime based on 90-minute sleep cycles
MedsDrug Interaction Checker
Save your med list, share results — prescriptions, OTC, supplements
MedsPill Identifier
Identify unknown pills by imprint — live preview & RxNorm verified
FitnessBMI Calculator
Your number and what it means — clear, no judgment
Pregnancy & fertility tools
Trying to conceive or already pregnant? Calculate your fertile window, due date, and fertility outlook — free, private, no account.
Ovulation Calculator
Find your fertile window and best days to conceive — private, no account
PregnancyDue Date Calculator
Calculate your pregnancy due date from your last period — week-by-week timeline
FertilityFertility Calculator
Estimate conception odds by age and cycle — when to talk to a specialist
Most Popular Free Tools
Fast access to our most-used health calculators
Ovulation Calculator
Find your fertile window and ovulation day
Due Date Calculator
Pregnancy due date from last menstrual period
Drug Interaction Checker
Check 230+ medications for dangerous interactions
Pill Identifier
Look up pills by imprint, color, and shape
Blood Pressure Calculator
Check if your BP is normal, elevated, or high
BMI Calculator
Calculate body mass index and weight category
Heart Disease Risk
10-year ASCVD heart attack & stroke risk
Cholesterol Calculator
Analyze LDL, HDL & cardiovascular risk
Sleep Calculator
Find optimal bedtime based on sleep cycles
Insulin Dosage Calculator
Mealtime doses & blood sugar corrections
Anxiety Test (GAD-7)
Free screening for anxiety & panic symptoms
Pick your check
Body, mind, meds, sleep — free tools that respect your privacy
BMI & Body Analysis
Calculate your Body Mass Index and get comprehensive body composition analysis with health recommendations.
Anxiety & Mental Health
Validated GAD-7 anxiety test — private, no account. Know if your stress is everyday worry or worth a conversation with someone.
Ovulation Calculator
Fertile window, ovulation day, and cycle timing.
Due Date Calculator
Due date, trimester, and week-by-week timeline.
Calorie Calculator
Daily caloric needs and weight management.
Caffeine Calculator
How much is too much — and when it'll wreck your sleep.
Sleep Calculator
What time to go to bed so you wake up without feeling dead.
Med Interaction Check
Mixing meds or supplements? Check before you combine.
Pill Identifier
Found a loose pill? Search by imprint with live preview.
Sexual Health Hub
Clinical guides on bodies, wellness, and when to seek care.
Built different
No accounts, no data harvesting — just tools that work on your phone
Vitals Monitor
Live charts, real-time updates
Spot early health warnings
Simple daily/weekly trends
Secure long-term storage
Health Tracker
Track health metrics
Quick calculations
Progress monitoring
Medical Assistant
Ask health questions
Trained on medical data
24/7 health support
Health Connect
Sync health devices
Unusual alerts triggered
Reports & Analytics
A Deeper Look
At Health Tools Hub, we believe everyone deserves access to professional-grade health insights. Through real-time calculations and intelligent analysis, we help you understand your health metrics better than ever. With cutting-edge technology and medically accurate algorithms tailored to give you the health insights you deserve.
Medically Accurate
All health calculations based on established medical guidelines and peer-reviewed research
Easy to Use
Simple, intuitive interfaces designed for users of all technical backgrounds
Always Free
No hidden fees, subscriptions, or registration required. Health tools for everyone
Trusted by Doctors
Developed in partnership with medical professionals and health experts