Free tools

Free health tools

Quick, private and free — no sign-up. Check a symptom or run the numbers in under a minute.

Most popular

Popular
Tooth-pain checker
Find what's likely causing it
Popular
Calorie & TDEE
Your daily energy needs
Popular
BMI & body composition
Beyond a single number
Popular
Sleep calculator
Best times to sleep & wake

Dental

3 tools
Tooth-pain checker
Find what's likely causing it
Brushing timer
A guided two-minute clean
Whitening shade guide
See your current tooth shade

Body & nutrition

5 tools
Calorie & TDEE
Your daily energy needs
BMI & body composition
Beyond a single number
Body-fat estimate
A quick, no-caliper estimate
Ideal weight
A healthy range for your height
Daily water intake
How much to drink each day

Sleep & habits

3 tools
Sleep calculator
Best times to sleep & wake
Caffeine cut-off
Your last coffee of the day
Chronotype quiz
Are you a lark or an owl?

Heart & fitness

3 tools
Heart-rate zones
Train at the right intensity
Max heart rate
Your estimated ceiling
Steps to distance
Turn steps into km

Women's health

3 tools
Due-date estimator
Estimate your delivery date
Pregnancy weight gain
A healthy range by trimester
Ovulation window
Find your most fertile days
AI assistant

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