Convert Second to Millisecond

1 second = 1,000 millisecond (ms). For example, 10 second = 10,000 millisecond and 100 second = 100,000 millisecond. Type any value below to convert second to millisecond both ways — it runs entirely in your browser.

Second to Millisecond conversion formula

To convert second to millisecond, multiply by 1,000:

millisecond = second × 1,000

Going the other way, 1 millisecond = 0.001 second, so second = millisecond × 0.001.

Second to Millisecond — worked examples

SecondMillisecond
1 s1,000 ms
2 s2,000 ms
3 s3,000 ms
5 s5,000 ms
10 s10,000 ms
25 s25,000 ms
50 s50,000 ms
100 s100,000 ms

Second ↔ Millisecond reference table

Second → Millisecond Millisecond → Second
1 s = 1,000 ms 1 ms = 0.001 s
2 s = 2,000 ms 2 ms = 0.002 s
5 s = 5,000 ms 5 ms = 0.005 s
10 s = 10,000 ms 10 ms = 0.01 s
20 s = 20,000 ms 20 ms = 0.02 s
50 s = 50,000 ms 50 ms = 0.05 s
100 s = 100,000 ms 100 ms = 0.1 s
250 s = 250,000 ms 250 ms = 0.25 s
500 s = 500,000 ms 500 ms = 0.5 s
1000 s = 1,000,000 ms 1000 ms = 1 s

About second and millisecond

Second: The second is the SI base unit of time. Everyday durations, timeouts and stopwatch readings are usually measured in seconds.

Millisecond: A millisecond is one-thousandth of a second (1 s = 1,000 ms) — the unit for web-page load times, API timeouts, ping/latency and animation frames.

Frequently asked questions

How many millisecond are in 1 second?
1 second = 1,000 millisecond (ms).
How do I convert second to millisecond?
Multiply the number of second by 1,000. For example, 10 second = 10 × 1,000 = 10,000 millisecond.
How many second are in 1 millisecond?
1 millisecond = 0.001 second.
Which is bigger, second or millisecond?
1 second equals 1,000 millisecond, so a second is the larger unit.

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