Time units calculator & converter tool
Hour Conversions Table
Equivalent of 18 Hour: |
64800000000000 Nanosecond |
64800000000 Microsecond |
64800000 Millisecond |
64800 Second |
1080 Minute |
0.750006 Day |
0.107136 Week |
0.024642 Month |
0.002052 Year |
2.053431E-5 Century |
Hour / Day Units Definition
Hour
An hour is a unit of time that divides a day into 24 equal parts. So there are 24 hours in a day. A minute is a unit of time that divides an hour into 60 equal parts. So there are 60 minutes in an hour.
Day
The day is also a unit of time which, although outside the International System (SI), is in use with it. It is worth exactly 86,400 seconds and its symbol is “d” (from the Latin dies, but also the initial of the English word day). The French abbreviation “j” is nevertheless frequently used.