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Units / Time

Time Converter

Convert between seconds, minutes, hours, days, and more

From unit

To unit

Quick reference

Hour (hr) to Minute (min)

0.25 hr
= 15 min
0.5 hr
= 30 min
1 hr
= 60 min
2 hr
= 120 min
4 hr
= 240 min
8 hr
= 480 min
12 hr
= 720 min
24 hr
= 1440 min

How time conversion works

Time units relate to the second through fixed multipliers: 1 minute = 60 seconds, 1 hour = 3,600 seconds, 1 day = 86,400 seconds.

1 hour = 60 minutes = 3,600 seconds

Month and year values use averages (1 month = 30.4369 days, 1 year = 365.2422 days) since actual months and years vary in length.

Units in this category

Millisecond ms

One thousandth of a second. Used in computing, sports timing, and network latency.

Second s

The SI base unit of time. The foundation for all other time measurements.

Minute min

Equal to 60 seconds. Standard for cooking timers, meetings, and short durations.

Hour hr

Equal to 60 minutes (3,600 seconds). Used for work schedules, travel time, and daily planning.

Day day

Equal to 24 hours (86,400 seconds). The fundamental cycle of human activity.

Week wk

Equal to 7 days. Common for project planning and recurring schedules.

Month mo

Averaged to 30.4369 days. Actual months range from 28 to 31 days.

Year yr

Averaged to 365.2422 days. Based on the tropical year (Earth’s orbit around the Sun).

Frequently asked questions

How many seconds are in a day?
There are 86,400 seconds in a day (24 hours × 60 minutes × 60 seconds).
How many hours are in a year?
There are approximately 8,766 hours in an average year (365.2422 days × 24 hours).
Why is a month not an exact number of days?
Calendar months vary from 28 to 31 days. Converters use the average Gregorian month of 30.4369 days (365.2422 ÷ 12) for consistent calculations.
How many milliseconds are in a second?
There are 1,000 milliseconds in one second.

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