How many millisecond in 1 seconds?
The answer is 1000.

We assume you are converting between **millisecond** and **second**.

You can view more details on each measurement unit:

millisecond or
seconds

The SI base unit for **time** is the second.

1 millisecond is equal to 0.001 second.

Note that rounding errors may occur, so always check the results.

Use this page to learn how to convert between milliseconds and seconds.

Type in your own numbers in the form to convert the units!

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1 millisecond to seconds = 0.001 seconds

10 millisecond to seconds = 0.01 seconds

50 millisecond to seconds = 0.05 seconds

100 millisecond to seconds = 0.1 seconds

200 millisecond to seconds = 0.2 seconds

500 millisecond to seconds = 0.5 seconds

1000 millisecond to seconds = 1 seconds

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

millisecond to century

millisecond to hour

millisecond to day

millisecond to nanosecond

millisecond to shake

millisecond to millennium

millisecond to decade

millisecond to microsecond

millisecond to week

millisecond to minute

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.

The second (symbol s) is a unit for time, and one of seven SI base units. It is defined as the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium-133 atom at zero kelvins.

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