Choosing the right capacity for your rice cooker depends on your household size and cooking requirements. Rice cookers typically mention their capacity in terms of the number of cups of uncooked rice they can hold. As a general guideline, a 3-cup rice cooker is suitable for small households or individuals, a 5 to 6-cup rice cooker is ideal for medium-sized families, and a larger 8 to 10-cup rice cooker is recommended for larger gatherings or frequent entertaining. Consider your regular cooking needs and adjust the capacity accordingly.