# Seconds to Milliseconds Conversion

Enter the time in seconds below to get the value converted to milliseconds.

Results in Milliseconds: 1 sec = 1,000 ms

## How to Convert Seconds to Milliseconds

To convert a second measurement to a millisecond measurement, multiply the time by the conversion ratio.

Since one second is equal to 1,000 milliseconds, you can use this simple formula to convert:

milliseconds = seconds × 1,000

The time in milliseconds is equal to the seconds multiplied by 1,000.

For example, here's how to convert 5 seconds to milliseconds using the formula above.
5 sec = (5 × 1,000) = 5,000 ms

### How Many Milliseconds Are in a Second?

There are 1,000 milliseconds in a second, which is why we use this value in the formula above.

1 sec = 1,000 ms

## Seconds

The second has historically been defined as 1/60 of a minute or 1/86,400 of a day. According the to SI definition, the second is the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the unperturbed ground state of the caesium 133 atom.

The second is the SI base unit for time in the metric system. Seconds can be abbreviated as sec; for example, 1 second can be written as 1 sec.

## Milliseconds

The millisecond is a multiple of the second, which is the SI base unit for time. In the metric system, "milli" is the prefix for 10-3. Milliseconds can be abbreviated as ms; for example, 1 millisecond can be written as 1 ms.

## Second to Millisecond Conversion Table

Second measurements converted to milliseconds
Seconds Milliseconds
0.001 sec 1 ms
0.002 sec 2 ms
0.003 sec 3 ms
0.004 sec 4 ms
0.005 sec 5 ms
0.006 sec 6 ms
0.007 sec 7 ms
0.008 sec 8 ms
0.009 sec 9 ms
0.01 sec 10 ms
0.02 sec 20 ms
0.03 sec 30 ms
0.04 sec 40 ms
0.05 sec 50 ms
0.06 sec 60 ms
0.07 sec 70 ms
0.08 sec 80 ms
0.09 sec 90 ms
0.1 sec 100 ms
0.2 sec 200 ms
0.3 sec 300 ms
0.4 sec 400 ms
0.5 sec 500 ms
0.6 sec 600 ms
0.7 sec 700 ms
0.8 sec 800 ms
0.9 sec 900 ms
1 sec 1,000 ms

## References

1. International Bureau of Weights and Measures, The International System of Units, 9th Edition, 2019, https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf