What is the conversion formula from milliliters to liters?

The conversion formula from milliliters to liters is based on the understanding that there are 1000 milliliters in a liter. Therefore, to convert a volume in milliliters to liters, you divide the number of milliliters by 1000.

The formula correctly expresses that liters (L) can be calculated by taking the milliliters (mL) and dividing by 1000. This reflects the metric system's decimal-based structure, where each step represents a power of ten. In this case, since 1 liter equals 1000 milliliters, the division by 1000 is necessary to convert to the larger unit of liters.

Other options do not correctly apply this relationship. For example, multiplying milliliters by 1000 would incorrectly suggest you end up with a larger volume than you have. Similarly, the other options either misrepresent the relationship or provide conversions for different directions that do not lead to the desired result of converting milliliters to liters.