h

What is a Hour?

Time Unit

Definition

An hour is a unit of time equal to 60 minutes or 3,600 seconds.

Popular Hour Conversions

Most common conversions from Hours

1 h = 3,600 s Hour to Seconds 1 h = 3,600,000 ms Hour to Milliseconds 1 h = 3,600,000,000 μs Hour to Microseconds 1 h = 3,600,000,000,000 ns Hour to Nanoseconds 1 h = 60 min Hour to Minutes 1 h = 0.041667 d Hour to Days

History

The hour dates back to ancient Egypt, where the day was divided into 12 hours of daylight. The fixed-length hour came with mechanical clocks.

Common Uses

Work and business hours
Travel time estimates
Sleep duration
Billing and wages

Fun Facts

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The word 'hour' comes from Greek 'hora' meaning 'season' or 'time of day'

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Happy hour traditionally starts at 5 PM

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The Earth rotates 15 degrees every hour

All Hour Conversions

Hours to Seconds h → s Hours to Milliseconds h → ms Hours to Microseconds h → μs Hours to Nanoseconds h → ns Hours to Minutes h → min Hours to Days h → d Hours to Weeks h → wk Hours to Months h → mo Hours to Years h → yr