Convert milliseconds to seconds
Enter a value in milliseconds to convert it to seconds.
milliseconds to seconds reference
| milliseconds | seconds |
|---|---|
| 1 ms | 0.001 s |
| 2 ms | 0.002 s |
| 5 ms | 0.005 s |
| 10 ms | 0.01 s |
| 25 ms | 0.025 s |
| 50 ms | 0.05 s |
| 100 ms | 0.1 s |
The conversion factor
One millisecond is 0.001 seconds. So to convert, multiply your figure in milliseconds by 0.001. To go the other way, multiply seconds by 1000, or use the seconds to milliseconds converter.
Doing it in your head
For a quick estimate, round the factor: roughly "divide by 1000". Use the exact converter above when the number matters.
Where this conversion comes up
Durations in code and spreadsheets, timeouts, and project estimates.
See the common unit conversions cheat sheet for the factors worth memorising.
Related tools
Frequently asked questions
How many seconds are in a millisecond?
1 millisecond = 0.001 seconds.
What is the formula to convert milliseconds to seconds?
Multiply the number of milliseconds by 0.001. To go back the other way, multiply seconds by 1000.
What is 10 milliseconds in seconds?
10 milliseconds = 0.01 seconds. The reference table below lists more common values.
Is this converter accurate?
It uses the internationally defined conversion factors and computes at full floating-point precision, then rounds only the displayed result. For everyday purposes it is exact; for legal, engineering or scientific work, confirm the required number of significant figures.
Does it work offline?
Yes. The conversion runs in your browser with no server call, so it keeps working with no connection, and nothing you enter is uploaded.
Last reviewed: September 2026. Figures and formulas are checked against their published sources; see the site's data notes.