Nutrition

Body composition, nutrition, pregnancy and heart-health calculators based on WHO, NHS, ACOG and ACSM reference standards.

Macro Calculator

Calculate daily protein, carbohydrate and fat grams from your estimated calorie needs, with balanced, high-protein, keto and plant-based splits.

Estimate daily water intake from body weight, exercise and climate using common 30–35 ml/kg clinical guidance. Results in liters, glasses and ounces.

Calculate daily protein needs by goal — RDA 0.8 g/kg, general activity, muscle gain or endurance — with per-meal targets from published ranges.

Calculate daily calories to maintain, lose or gain weight using the Mifflin-St Jeor equation, activity multipliers and safe minimum-calorie floors.