When calculating dosages, what unit is often used to express small volumes of liquid?

In the context of calculating dosages, especially in pharmacy, milliliters are the standard unit used to express small volumes of liquid. This is primarily because milliliters allow for precise measurement of medication dosages that often require small amounts, particularly in pediatrics or when dosing highly concentrated solutions.

Liters, on the other hand, are typically used for larger volumes and are less practical when detailing the small quantities commonly needed for individual medication doses. Pints and gallons represent even larger volumes and are rarely suitable for the precise measurements needed in pharmaceutical settings. Therefore, milliliters are the most appropriate choice for accurately conveying small liquid voluminous quantities in calculations related to medication dosing.