One milliliter is equal to one one-thousandth of a liter or 1 cubic centimeter. In U.S. measurements, a milliliter is 0.03 fluid ounces, 0.06 cubic inches or 0.2 teaspoons; in British Imperial units, a milliliter is 0.04 fluid ounces or 0.17 teaspoons. There are roughly 15 to 20 drops of a liquid in 1 milliliter.