How many milliliters are in one ounce (1 oz)?

One ounce is equivalent to approximately 30 milliliters. This conversion is based on the commonly used metric system, where 1 fluid ounce (US) is defined as 29.57 milliliters. For practical purposes, this is typically rounded to 30 milliliters when performing calculations in a pharmacy setting, making it easier for pharmacy technicians to convert liquid measurements. This knowledge is essential for accurately measuring and dispensing medications, ensuring that patients receive the correct dosage. Understanding metric conversions like this is crucial in the pharmacy environment to maintain safety and effectiveness in patient care.