The prefix "milli" means 1/1000, so 1 milliliter = 0.001 liters. Alternatively, there are 1000 milliliters in a liter. One milliliter = 0.0338 fluid ounces. Also known as a cubic centimeter (see: distance units) because a cube 1 cm on each side has a volume of 1 ml. Because water has a density of 1.0, one ml of water weighs 1 gram