There are 3,600 seconds in one standard hour.
How the answer works
One hour contains 60 minutes, and each minute contains 60 seconds; 60 × 60 = 3,600.
Quick reference
Half an hour is 1,800 seconds, while a quarter hour is 900 seconds.
Everyday example
A 2.5-hour video lasts 9,000 seconds.
Important distinction
This is the conventional unit conversion; leap-second handling is a separate technical issue.
Frequently asked questions
What is the simplest way to remember it?
Half an hour is 1,800 seconds, while a quarter hour is 900 seconds.
Why might I see a different answer elsewhere?
This is the conventional unit conversion; leap-second handling is a separate technical issue.
For exact results, identify the unit system or starting date before calculating. Wondelique answers everyday questions with the practical context that makes each answer useful.
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