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Millisecond to Second Converter

Type a value — the answer appears instantly. 1 ms = 0.001 s.

Reviewed by the OmniCalc teamMethod verified 2026-07-01

From unit

To unit
Result

0.001 seconds

= 0.0000002778 h= 0.0000166667 min

equals 0.001 seconds

Formula: s = ms × 0.001

Millisecond to Second formula

s = ms × 0.001

Convert 5 milliseconds to seconds

  1. Start with 5 milliseconds.
  2. Multiply by the conversion factor: 5 × 0.001 = 0.005.
  3. So 5 ms = 0.005 s.

Millisecond to Second conversion table

Millisecond to Second conversion table
Milliseconds (ms)Seconds (s)
0.01 ms0.00001 s
0.1 ms0.0001 s
0.25 ms0.00025 s
0.5 ms0.0005 s
1 ms0.001 s
2 ms0.002 s
3 ms0.003 s
4 ms0.004 s
5 ms0.005 s
6 ms0.006 s
7 ms0.007 s
8 ms0.008 s
9 ms0.009 s
10 ms0.01 s
15 ms0.015 s
20 ms0.02 s
25 ms0.025 s
30 ms0.03 s
40 ms0.04 s
50 ms0.05 s
75 ms0.075 s
100 ms0.1 s
250 ms0.25 s
500 ms0.5 s
1,000 ms1 s
5,000 ms5 s
10,000 ms10 s

Unit definitions

What is a millisecond?

The millisecond is one thousandth of a second, the common unit for web page load times, audio latency, and reaction speed. Human reaction time is roughly 200 milliseconds. There are one thousand milliseconds in a second.

What is a second?

The second is the SI base unit of time, defined by the hyperfine transition frequency of caesium-133. It is the foundation of all timekeeping and the basis for every other time unit. Sixty seconds make a minute.

Frequently asked questions

How many seconds are in one millisecond?

One millisecond equals 0.001 seconds (1 ms = 0.001 s).

How do I convert milliseconds to seconds?

Multiply the value in milliseconds by 0.001. For example, 10 ms × 0.001 = 0.01 s.

Which is bigger — a millisecond or a second?

A second is bigger: one second contains 1,000 milliseconds.

Is this millisecond to second converter free?

Yes — the converter is free, works offline once loaded, and computes instantly in your browser without sending your numbers to a server.

Conversion factors follow international definitions (SI / NIST). Last verified 2026-07-01.