Convert 21 Milliseconds to Seconds
How long is 21 milliseconds? What is 21 milliseconds in seconds? 21 ms to s conversion.
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21 Milliseconds =
0.021 Seconds
exact result
Decimal places
Result in Plain English
21 milliseconds is equal to exactly 0.021 seconds.
To a Percentage
21 milliseconds = 2.1% of a second.
Result as a Fraction
21 milliseconds
= 21⁄1,000 seconds
In Scientific Notation
21 milliseconds
= 2.1 x 101 milliseconds
= 2.1 x 10-2 seconds
Seconds
A second is the base unit of time. Originally, it was based on the length of the day, but it has since been standardized based on the radiation wavelength of caesium-133.Common abbreviations: s, sec