Weight Calculator for infants is useful for calculating the ideal weight of your baby during various stages of its development. Weight is an important health indicator of a baby and shapes the well-being over their life cycle(1✔). This calculator calculates the weight of babies from their birth up to three years. It may not apply for low birth weight or pre-term babies as they ideally require a different measurement health indicator chart(2✔). Babies come in different shapes and sizes; some maybe slim and tall whereas others maybe chubby and short. Whatever be their size or shape, babies are definitely special and unique and taking care of their health is the top priority for all parents. Parents usually compare their babies growth with other babies of the same age. As the baby gains height and weight, their normal growth pattern can be compared with standard growth charts. Every baby should have their own chart maintained by the parents. This is a simple but effective method to the growth and health of the baby. There maybe racial and ethnic variations too but the WHO standards provide a better tool to monitor the rapid and changing rate of growth in early infancy. The tool demonstrate that healthy children from around the world who are raised in healthy environments and follow recommended feeding practices have strikingly similar patterns of growth(3✔).