How many seconds are in 1 milliseconds?

1 milliseconds (ms) is exactly 0.001 seconds (s).

How do I convert milliseconds to seconds?

Multiply the value in milliseconds by 0.001 to get the result in seconds. Or use the converter above — type any number and see the result instantly.

Milliseconds (ms) to Seconds (s) Conversion

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Milliseconds

The millisecond is a unit of time equal to one thousandth of a second (10⁻³ s) and represents the timescale of human physiological responses and digital audio. The human minimum reaction time to a visual stimulus is approximately 150–200 milliseconds. Network latency in internet communications is measured in milliseconds, where values below 20 ms are considered excellent for real-time applications.

Seconds

The second is the SI base unit of time, defined since 1967 as the duration of exactly 9,192,631,770 cycles of radiation from the caesium-133 atom. Atomic clocks based on this definition lose less than one second in 300 million years. The second underpins all timekeeping in modern civilisation — from GPS satellite synchronisation to internet protocols and financial transaction timestamps.

Milliseconds (ms) to Seconds (s) - Conversion Table
Milliseconds (ms)	Seconds (s)
0.1 ms	0.0001 s
1 ms	0.001 s
2 ms	0.002 s
3 ms	0.003 s
5 ms	0.005 s
10 ms	0.01 s
20 ms	0.02 s
30 ms	0.03 s
50 ms	0.05 s
100 ms	0.1 s
1000 ms	1 s

Convert Milliseconds (ms) to other units of Time

List of Conversions
‣ Milliseconds (ms) to nanoseconds (ns)
‣ Milliseconds (ms) to microseconds (μs)
‣ Milliseconds (ms) to seconds (s)
‣ Milliseconds (ms) to minutes (min)
‣ Milliseconds (ms) to hours (h)
‣ Milliseconds (ms) to days (d)
‣ Milliseconds (ms) to weeks (wk)
‣ Milliseconds (ms) to fortnights (fn)
‣ Milliseconds (ms) to months (mo)
‣ Milliseconds (ms) to years (yr)
‣ Milliseconds (ms) to decades (dec)
‣ Milliseconds (ms) to centuries (c.)
‣ Milliseconds (ms) to millennia (mil.)