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Convert Days To Hours

In order to Convert Days To Hours, please, enter Days value in the upper box and get the result in Hours in the lower box, and vice-versa. The result of the conversion appears immediately.


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This measurement conversion is based on a simple rule: 1 d = 24 h

A day (symbol d) is a unit of time equivalent to approximately 24 hours. It is not an SI unit but it is accepted for use with SI. The SI unit of time is the second.

An hour is a unit of measurement of time of the duration of 60 minutes, or 3600 seconds. It is 1/24 of a median Earth day. An hour in the Universal Coordinated Time (UTC) time standard can include a negative or positive leap second, and may therefore have a duration of 3599 or 3601 seconds for adjustment purposes.

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