Time Converter

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Convert milliseconds, seconds, minutes, hours, days, weeks, months and years.

Value

From

Change the value or the units to convert instantly.

Quick conversions

From	Equals
1 hour	60 minutes
1 day	24 hours
1 week	168 hours
90 minutes	1.5 hours

Formula & method

All times convert through seconds: value × (from-factor ÷ to-factor). Months and years use averages (30.44 days and 365.25 days) because calendar months vary.

Worked example

90 minutes = 1.5 hours. 1 week = 7 days = 168 hours. 3,600 seconds = 1 hour.

FAQ

Why is a month not exact?: Calendar months have 28–31 days, so converters use the average month of 30.44 days (365.25 ÷ 12).
How many seconds are in a day?: 86,400.
What about leap years?: The average year of 365.25 days accounts for leap years over a 4-year cycle.

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