About DailyCalc
Calculators that respect your privacy.
DailyCalc exists because health tools should be free, accurate, and private. No tracking. No accounts. No nonsense.
120
Calculators
across health, fitness & more
0
Data collected
everything stays on your device
2
Categories
and growing
∞
Free uses
no limits, no sign-ups ever
What we believe
Four principles that guide every calculator we build.
Science first
Every calculator is built on peer-reviewed formulas from organizations like the WHO, CDC, NIH, and ACSM. We cite our sources so you can verify.
Privacy by design
All calculations run locally in your browser. Zero data collection, zero tracking, zero server-side processing. Your health data stays yours.
Instant & accessible
No accounts, no paywalls, no app downloads. Open the page, enter your data, get results. Works on any device with a browser.
Free forever
We believe health tools shouldn't be locked behind subscriptions. DailyCalc is and will remain 100% free with no premium tiers.
Backed by science
Our formulas come from trusted institutions.
World Health Organization (WHO)
BMI standards, growth charts
Centers for Disease Control (CDC)
Body composition, health metrics
National Institutes of Health (NIH)
Nutritional guidelines, metabolic formulas
American College of Sports Medicine
Fitness assessments, VO₂ max
Mifflin–St Jeor, Harris–Benedict
Calorie & metabolic rate equations
Jackson–Pollock, U.S. Navy method
Body fat estimation models