Health & Fitness Calculators

The Health & Fitness category provides science-backed calculators grounded in WHO, NIH, and ICMR guidelines to help you make informed decisions about your physical wellbeing. All results include contextual interpretation and medically cited reference ranges — not just raw numbers.

Begin with the BMI Calculator, which classifies your Body Mass Index against WHO ranges (Underweight, Normal, Overweight, Obese) with additional context for South Asian body composition. The BMR Calculator computes your Basal Metabolic Rate using the Mifflin-St Jeor equation, and the connected Calorie Deficit Calculator applies your activity multiplier to give your Total Daily Energy Expenditure (TDEE) with deficit and surplus targets for weight management.

For fitness planning, the Heart Rate Zone Calculator defines your cardio training zones using the Karvonen formula. Other tools cover body fat percentage, ideal weight, water intake, sleep cycles, and pregnancy milestones — each built around peer-reviewed medical formulas.