How many minutes are there in one hour?

One hour is defined as a standard unit of time that is equivalent to 60 minutes. This is a widely accepted measurement in timekeeping systems around the world. Knowing this fundamental fact is essential for understanding how time is organized, whether in daily life or in the healthcare environment where precise timing can be crucial for patient care activities, medication administration, and scheduling.

The other options do not reflect the correct conversion, as 30 minutes represents half an hour, 90 minutes is one and a half hours, and 120 minutes equals two hours. All of these figures are incorrect in the context of how many minutes make up one hour.