If a thing is calculable, you can measure it with numbers, or you can work it out by studying the facts you have. A price can be calculable: add the parts, and you get a number. A risk can be calculable too — you may not be exact, but you can look at what you know and make a fair guess. It is a slightly formal word, more at home in school, business, and news than in a chat with friends. Though actually, people often reach for the opposite, incalculable, when they mean “so big you cannot count it,” especially for pain or loss. Calculable does not mean “likely” or “easy”; it means you can put a number, or a reasoned size, on it.