## ››Convert hour to millisecond

 hours millisecond

How many hours in 1 millisecond? 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 millisecond
The SI base unit for time is the second.
1 second is equal to 0.00027777777777778 hours, or 1000 millisecond.
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!

## ››Date difference between calendar days

You may also want to find out how many days are between two dates on the calendar. Use the date calculator to get your age in days or measure the duration of an event.

## ››Quick conversion chart of hours to millisecond

1 hours to millisecond = 3600000 millisecond

2 hours to millisecond = 7200000 millisecond

3 hours to millisecond = 10800000 millisecond

4 hours to millisecond = 14400000 millisecond

5 hours to millisecond = 18000000 millisecond

6 hours to millisecond = 21600000 millisecond

7 hours to millisecond = 25200000 millisecond

8 hours to millisecond = 28800000 millisecond

9 hours to millisecond = 32400000 millisecond

10 hours to millisecond = 36000000 millisecond

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You can do the reverse unit conversion from millisecond to hours, or enter any two units below:

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## ››Definition: Hour

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).

## ››Definition: Millisecond

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.

## ››Metric conversions and more

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, 100 kg, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!