Is 18 oz equal to 1 pint?

Answer 1

No, in U.S. liquid measure, 1 U.S. pint is 16 U.S. fluid ounces (473 ml). In Imperial measure, 1 Imperial pint is 20 Imperial fluid ounces (567 ml). Note that the U.S. fluid ounce is slightly larger than the Imperial fluid ounce, so the ratio of a U.S. pint to an Imperial pint is 83.4% instead of 80.0%.

18 oz. may be more than a pint or less than a pint, but it is definitely not equal.