# Milliseconds in a Second
> Number of milliseconds in a second.
## Usage
```javascript
var MILLISECONDS_IN_SECOND = require( '@stdlib/constants/time/milliseconds-in-second' );
```
#### MILLISECONDS_IN_SECOND
Number of milliseconds in a second.
```javascript
var bool = ( MILLISECONDS_IN_SECOND === 1000 );
// returns true
```
## Notes
- The value is a generalization and does **not** take into account inaccuracies arising due to complications with time and dates.
## Examples
```javascript
var randu = require( '@stdlib/random/base/randu' );
var roundn = require( '@stdlib/math/base/special/roundn' );
var MILLISECONDS_IN_SECOND = require( '@stdlib/constants/time/milliseconds-in-second' );
var ms;
var s;
var i;
function secs2ms( secs ) {
return secs * MILLISECONDS_IN_SECOND;
}
for ( i = 0; i < 10; i++ ) {
s = roundn( randu()*20.0, -2 );
ms = secs2ms( s );
console.log( '%d seconds => %d milliseconds', s, ms );
}
```