How many milliliters are equivalent to one fluid ounce?

One fluid ounce is equivalent to 30 milliliters. This conversion is crucial in medical settings, where precise measurements are essential for medications and dosages. Understanding this conversion allows healthcare professionals to accurately measure and administer liquids, ensuring patient safety and effective treatment. The knowledge of this conversion is particularly important in situations where prescriptions are written in ounces but need to be converted to milliliters for administration, especially when dealing with pediatric or geriatric patients who may require liquid medications in precise measurements.

The other options do not reflect the correct equivalent for one fluid ounce, as they either underestimate or overestimate the true volume when converted to milliliters.