gm (gram): The abbreviation gm stands for gram, a unit of measurement of weight and mass in the metric system. Although it may seem like a slightly strange acronym, EFBW actually stands for Estimated Fetal Birth Weight – or the weight that your baby could be when he or. Answer: Hi dear it means 1805+270 gm = 2075gm means 2. Answer: It's around 2kgs and 45grams. Grams (g) to Kilograms (kg) weight conversion calculator and how to convert. weight/mass in the metric system.