The phrase "add up to" can be used to express a wide variety of ideas, from totaling sums to highlighting the cumulative effect of numerous small actions. When searching for synonyms for this phrase, it is important to consider the context in which it is being used. Some possible alternatives include "amount to," "yield," and "contribute to," which all suggest a similar sense of combining multiple factors or elements towards a larger whole. Other options might include "accumulate," "result in," or "coalesce," which each convey a slightly different nuance of addition or combination. Ultimately, the key is to choose a synonym that accurately captures the intended meaning and tone, while also reflecting the writer's specific voice and style.