✨ Lifestyle — Free Online Calculators & Tools

Indian sizes typically use S/M/L/XL or chest measurements in inches. UK/US sizes use numerical sizing. For women's western wear: Indian S = UK/US 6, M = 8, L = 10. For men: Indian 38 chest = UK/US M. Always check the brand's specific size chart as sizing is not standardized globally.

BMI is a screening tool, not a diagnostic measure. A healthy BMI (18.5–22.9 by Indian standards) is associated with lower risk of lifestyle diseases like diabetes, hypertension, and heart disease. However, waist circumference, waist-to-hip ratio, and body fat percentage are better indicators of metabolic health than BMI alone.

ICMR (Indian Council of Medical Research) recommends ~2,000–2,200 kcal/day for an average adult woman and ~2,400–2,700 kcal/day for men doing moderate work. Individual needs vary based on age, height, weight, and activity. Use our Calorie Calculator for a personalized TDEE estimate.

General guideline: 8 glasses (2 litres) per day for adults. More accurate: ~35 ml per kg body weight. For a 70 kg person: 70 × 35 = 2,450 ml. Adjust for: hot weather (+500ml), exercise (+500–1000ml), high-protein diet (+500ml). Urine colour is a simple indicator: pale yellow = well-hydrated, dark yellow = drink more.

National Sleep Foundation recommendations: Newborns (0–3m): 14–17 hrs. Infants (4–11m): 12–15 hrs. Toddlers (1–2y): 11–14 hrs. School age (6–13y): 9–11 hrs. Teenagers (14–17y): 8–10 hrs. Adults (18–64y): 7–9 hrs. Older adults (65+): 7–8 hrs. Consistent sleep timing is as important as duration.