What is hour?

An hour is a unit of time equal to 60 minutes. It is the standard unit for time-of-day references, work schedules, travel durations, and billing periods across most global contexts.

What is millisecond?

A millisecond is a unit of time equal to one thousandth of a second. It is used in computing, networking, audio and video processing, and measuring reaction times and signal latencies.

Worked examples

1 hour = 3,600,000 millisecond

1 millisecond = 0.001 second