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I want to create a function that will convert the days into milliseconds. The days format is stored as 0.2444, so how to convert this to milliseonds?
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To convert days to milliseconds, multiply the days by 24 for the hours, 60 for the minutes, 60 for the seconds and 1000 for the milliseconds, e.g. days * 24 * 60 * 60 * 1000 . Copied!
A millisecond (from milli- and second; symbol: ms) is one thousandth (0.001 or 10−3 or 1/1000) of a second.
To convert a second measurement to a millisecond measurement, multiply the time by the conversion ratio. The time in milliseconds is equal to the seconds multiplied by 1,000.
A millisecond (ms or msec) is one thousandth of a second and is commonly used in measuring the time to read to or write from a hard disk or a CD-ROM player or to measure packet travel time on the Internet. For comparison, a microsecond (us or Greek letter mu plus s) is one millionth (10-6) of a second.
The best practice for this, in my opinion is:
TimeUnit.DAYS.toMillis(1); // 1 day to milliseconds. TimeUnit.MINUTES.toMillis(23); // 23 minutes to milliseconds. TimeUnit.HOURS.toMillis(4); // 4 hours to milliseconds. TimeUnit.SECONDS.toMillis(96); // 96 seconds to milliseconds. In addition to the other answers, there is also the TimeUnit class which allows you to convert one time duration to another. For example, to find out how many milliseconds make up one day:
TimeUnit.MILLISECONDS.convert(1, TimeUnit.DAYS); //gives 86400000 Note that this method takes a long, so if you have a fraction of a day, you will have to multiply it by the number of milliseconds in one day.
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