How Many Milliseconds? Quiz: Test Your Time Conversion Skills

To find the number of milliseconds in 5 seconds, multiply the number of seconds by the number of milliseconds per second: 5 seconds×1,000 milliseconds/second=5,000 milliseconds

The second is a base unit of time in the International System of Units (SI). A millisecond is one-thousandth of a second, meaning that there are 1,000 milliseconds in one second.

Mathematically, this conversion is expressed as:

1 second×1,000 milliseconds/second=1,000 milliseconds

Convert days to seconds, then seconds to milliseconds:

1.5 days×24 hours/day×60 minutes/hour×60 seconds/minute=129,600 seconds 129,600 seconds×1,000 milliseconds/second=129,600,000 milliseconds

Convert milliseconds to seconds:

500,000 milliseconds/1,000 milliseconds/second=500 seconds

Convert milliseconds to seconds:

2,000,000 milliseconds/1,000 milliseconds/second=2,000 seconds

First, convert minutes to seconds, then seconds to milliseconds: 2.5 minutes×60 seconds/minute=150 seconds 150 seconds×1,000 milliseconds/second=150,000 milliseconds

Convert weeks to seconds, then seconds to milliseconds: 2 weeks×7 days/week×24 hours/day×60 minutes/hour×60 seconds/minute=1,209,600 seconds 1,209,600 seconds×1,000 milliseconds/second=1,209,600,000 milliseconds

Convert milliseconds to seconds, then seconds to minutes:

180,000 milliseconds/1,000 milliseconds/second=180 seconds

180 seconds/60 seconds/minute=3 minutes

Convert weeks to seconds, then seconds to milliseconds:

1 week×7 days/week×24 hours/day×60 minutes/hour×60 seconds/minute=604,800 seconds 604,800 seconds×1,000 milliseconds/second=604,800,000 milliseconds

To find the number of milliseconds in a minute, multiply the number of seconds in a minute by the number of milliseconds per second: 1 minute×60 seconds/minute×1,000 milliseconds/second=60,000 milliseconds

Convert milliseconds to seconds, then seconds to minutes:

3,600,000 milliseconds/1,000 milliseconds/second=3,600 seconds

3,600 seconds/60 seconds/minute=60 minutes

Convert hours to seconds, then seconds to milliseconds: 1 hour×60 minutes/hour×60 seconds/minute=3,600 seconds 3,600 seconds×1,000 milliseconds/second=3,600,000 milliseconds

Convert hours to seconds, then seconds to milliseconds:

3 hours×60 minutes/hour×60 seconds/minute=10,800 seconds

10,800 seconds×1,000 milliseconds/second=10,800,000 milliseconds

Convert days to seconds, then seconds to milliseconds:

1 day×24 hours/day×60 minutes/hour×60 seconds/minute=86,400 seconds 86,400 seconds×1,000 milliseconds/second=86,400,000 milliseconds

Convert milliseconds to seconds, then seconds to hours:

7,200,000 milliseconds/1,000 milliseconds/second=7,200 seconds

7,200 seconds/3,600 seconds/hour=2 hours