Hour to Second Converter

1 Hour = 3600 Second
Hour (h) ➜ Second (s)
 
h

Hour vs Second Comparison Chart

Source - HourTarget - Second

Hour (h) - Definition and Overview

What is Hour?

An hour (hr, h) is a unit of time defined as 1/24 of a day or 3600 atomic seconds.

Summary

  • An hour is a unit of time equal to 60 minutes or 3,600 seconds
  • It is widely used in daily life to measure longer periods of time, such as the duration of a workday or the time it takes to travel between cities.

Second (s) - Definition and Overview

What is Second?

The second(sec,s) is the base unit of time in the International System of Units (SI). It is defined as 1/86400 of a day. Multiples of seconds are usually counted in minutes and hours.

Summary

  • The second is the fundamental unit of time in the International System of Units (SI)
  • It is defined based on the vibrations of cesium atoms
  • One second is the duration of 9,192,631,770 periods of radiation corresponding to the transition between two hyperfine levels of the ground state of the cesium-133 atom.

How to Convert Hour to Second?

1 Hour is equal to 3600 Second. To convert Hour to Second, use this simple formula:

Second = Hour x 3600

So, just multiply the number of Hour by 3600 to get equivalent value in Second.

Example 1:

Convert 5 Hour to Second
5 x 3600 = 18000 Second

Example 2:

Convert 7.5 Hour to Second
7.5 x 3600 = 27000 Second

Author Information

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Rajesh V U

Full-Stack Developer & Storage Technologist | Creator of UnitSmash.com
Last updated: June 1, 2026

I am a Storage Technologist with strong experience in enterprise storage systems, Angular development, and web-based tools. I enjoy building practical calculators, converters, and utilities, and I also create original cartoons. I share my tools, articles, and creative work on my personal website, rajeshvu.com.