The phrase "calculate on" can have multiple meanings and uses in the English language. Some possible synonyms for this phrase include "account for," "factor in," "consider," "take into consideration," "incorporate," "reckon with," and "include in one's calculations." These words suggest a process of deliberation or estimation, indicating that one is taking various factors into account to arrive at a conclusion or decision. Importantly, these synonyms imply that the process of calculating on something requires a certain level of thoughtfulness or strategic thinking, rather than simply relying on intuition or assumption. Ultimately, the choice of synonym will depend on the specific context and intended meaning of the phrase.