Calendars document the days in a month

Time Unit Conversion Calculators

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