Author: Newtrist

A BMI result can quickly show how body weight compares with height, but it cannot describe body composition or decide whether weight should change. This article explains adult BMI categories, the formula, important limitations and when individual interpretation may be useful.

A pregnancy calculator gives you an estimated due date from menstrual information, but it cannot predict the exact day of birth. This page explains how the estimate is derived, why cycle regularity matters, how pregnancy weeks are understood and when wider clinical or nutrition assessment may be useful.

A BMR result estimates the energy your body uses for essential functions at rest. This page explains what the number means, why it differs between people, how it differs from total daily energy expenditure and why it should not be treated as a ready-made eating target.

Body-fat percentage describes the estimated share of total body weight that is fat mass. This page explains how to read a calculator result, why estimates differ between people, how body-fat percentage differs from BMI and why one number cannot define an appropriate weight-management approach.

A protein calculator can give you a useful daily estimate, but the number does not automatically tell you what foods, quantities or eating pattern will suit you. This page explains what the result means, why protein needs vary, how protein quality matters and when a personalised assessment may be useful.

A water calculator can provide a practical starting estimate, but daily hydration needs are not identical for everyone. This page explains what the result means, why activity and climate can change requirements, what counts towards hydration and when a general estimate may not be enough.