How many hours in 1 ms? The answer is 2.7777777777778E-7. We assume you are converting between hour and millisecond. You can view more details on each measurement unit: hours or ms The SI base unit for time is the second. 1 second is equal to 0.00027777777777778 hours, or 1000 ms. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between hours and milliseconds. Type in your own numbers in the form to convert the units!
You may also want to find out how many days are between two dates on the calendar. Use the date calculatorto get your age in days or measure the duration of an event.
1 hours to ms = 3600000 ms
2 hours to ms = 7200000 ms
3 hours to ms = 10800000 ms
4 hours to ms = 14400000 ms
5 hours to ms = 18000000 ms
6 hours to ms = 21600000 ms
7 hours to ms = 25200000 ms
8 hours to ms = 28800000 ms
9 hours to ms = 32400000 ms
10 hours to ms = 36000000 ms
You can do the reverse unit conversion from ms to hours, or enter any two units below:
The hour was originally defined in Egypt as 1/24 of a day, based on their duo-decimal numbering system (which counted finger joints on each hand).
The SI prefix "milli" represents a factor of 10-3, or in exponential notation, 1E-3.
So 1 millisecond = 10-3 arcseconds.
The definition of a second is as follows:
A second of arc or arcsecond is a unit of angular measurement which comprises one-sixtieth of an arcminute, or 1/3600 of a degree of arc or 1/1296000 (approximately 7.7×10-7) of a circle. It is the angular diameter of an object of 1 unit diameter at a distance of 360×60×60/(2pi) (approximately 206,265 units), such as (approximately) 1 cm at 2.1 km, or, directly from the definition, 1 astronomical unit at 1 parsec.
ConvertUnits.com provides an online conversion calculator for all types of measurement units. You can find metric conversion tables for SI units, as well as English units, currency, and other data. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. Examples include mm, inch, 70 kg, 150 lbs, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!