Convert Millisecond to Second

1 millisecond = 0.001 second (s). Type any value below to convert millisecond to second both ways — it runs entirely in your browser.

Millisecond to Second conversion formula

To convert millisecond to second, multiply by 0.001:

second = millisecond × 0.001

Going the other way, 1 second = 1,000 millisecond, so millisecond = second × 1,000.

Millisecond to Second — worked examples

MillisecondSecond
1 ms0.001 s
2 ms0.002 s
3 ms0.003 s
5 ms0.005 s
10 ms0.01 s
25 ms0.025 s
50 ms0.05 s
100 ms0.1 s

Millisecond ↔ Second reference table

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

About millisecond and second

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.

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

Frequently asked questions

How many second are in 1 millisecond?
1 millisecond = 0.001 second (s).
How do I convert millisecond to second?
Multiply the number of millisecond by 0.001. For example, 10 millisecond = 10 × 0.001 = 0.01 second.
How many millisecond are in 1 second?
1 second = 1,000 millisecond.
Which is bigger, millisecond or second?
1 second equals 1,000 millisecond, so a second is the larger unit.

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