Time Unit Conversion Calculators

Calendars document the days in a month
To convert a unit of time to another, metric or imperial, choose a unit to convert from.

Measuring Time

Clocks are used to measure time in hours, minutes, and seconds.

Time is the measurement of the sequence and duration of events occurring in the past, present, and future. Dictionary.com defines time as the system of those sequential relations that any event has to any other, as past, present, or future; indefinite and continuous duration regarded as that in which events succeed one another. Calendars, clocks and watches are instruments for measuring time. Calendars can be used to measure years, months, and days, while clocks can be used to measure hours, minutes, and seconds. A year is equal to 12 months, a month is equal to 28-31 days, a day is equal to 24 hours, an hour is equal to 60 minutes, and a minute is equal to 60 seconds. The table below compares common measures of time. Use the unit conversion tools above to convert from one unit of time to another unit of time. Wikihow explains how to use a clock to measure time.

Units of Time Measurement

Units of time include years, months, weeks, days, hours, minutes, seconds, and milliseconds.

Common Time Measurement Conversions

Hours to minutes time conversion
1 hour is equal to 60 minutes
Hours to seconds time conversion
1 hour is equal to 3,600 seconds
Hours to milliseconds time conversion
1 hour is equal to 3,600,000 milliseconds
Days to hours time conversion
1 day is equal to 24 hours
Days to minutes time conversion
1 day is equal to 1,440 minutes
Days to seconds time conversion
1 day is equal to 86,400 seconds

Time Unit Conversion Table

Equivalent time duration values
Convert From Year Month Week Day Hour Minute Second Millisecond
1 year = 1 yr 12.000008 mo 52.177414 wk 365.241898 day 8,766 hr 525,948 min 31,556,900 sec 31,556,900,000 ms
1 month = 0.083333 yr 1 mo 4.348115 wk 30.436806 day 730.483333 hr 43,829 min 2,629,740 sec 2,629,740,000 ms
1 week = 0.019165 yr 0.229985 mo 1 wk 7 day 168 hr 10,080 min 604,800 sec 604,800,000 ms
1 day = 0.002738 yr 0.032855 mo 0.142857 wk 1 day 24 hr 1,440 min 86,400 sec 86,400,000 ms
1 hour = 0.000114 yr 0.001369 mo 0.005952 wk 0.041667 day 1 hr 60 min 3,600 sec 3,600,000 ms
1 minute = 0.0000019013 yr 0.000022816 mo 0.000099206 wk 0.000694 day 0.016667 hr 1 min 60 sec 60,000 ms
1 second = 0.000000031689 yr 0.00000038027 mo 0.0000016534 wk 0.000011574 day 0.000278 hr 0.016667 min 1 sec 1,000 ms
1 millisecond = 0.000000000031689 yr 0.00000000038027 mo 0.0000000016534 wk 0.000000011574 day 0.00000027778 hr 0.000016667 min 0.001 sec 1 ms