A normal uterus is about the size of a woman's fist. Measurements would be about 8 x 6 x 4 cm and weighing about 100-200 grams (4-7 ounces I believe).Normal thickness for the endometrial lining is about 8-13 mm, depending on where you are in your cycle. normal uterus is about the size of a woman's fist. Measurements would be about 8 x 6 x 4 cm and weighing about 100-200 grams (4-7 ounces I believe).