Calculators with cited formulas
Written by The Kalcule Team
Free tools for body metrics, nutrition, pregnancy dates, BAC, dates and inflation. Each calculator names the equation it uses and links a primary source. Estimates only — not medical or financial advice.
Track pregnancy, ovulation, BAC, and other health metrics to monitor and improve your wellbeing.
Why Choose KALCULE?
Cited formulas
Each calculator names its equation — Mifflin-St Jeor, Widmark, Naegele, WHO BMI categories, and others — and links a primary source so you can check the method.
Transparent methods
We are a small independent team, not a clinic. We publish the formula, the known limits, and a visible last-updated date instead of claiming medical review we do not have.
Built to be checked
Simple inputs, visible assumptions, and related reading that sends you to the tool — not a black-box “expert score.”