13 free calculators · no sign-up needed

Your health, calculated clearly.

LifeViora turns the health formulas doctors and dietitians actually use into simple, fast, private calculators — BMI, calories, sleep cycles, ovulation and more.

13 calculators 100% free, forever 0 data stored

Quick BMI check

Want more detail? Open the full BMI calculator →

21.4 BMI 7.5h sleep 72 bpm

Why people trust LifeViora

Clear, evidence-based numbers — every single time

No accounts, no clutter, no guesswork. Just the same calculations used in clinics and sports labs, explained in plain language.

Evidence-based formulas

Mifflin-St Jeor, Naegele's rule, U.S. Navy method & more.

Private by design

Everything calculates in your browser — nothing is stored.

Instant & free

No sign-up, no paywall, results in under a second.

Mobile-first build

The same fast, clean experience on phone, tablet or desktop.

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