How many us in 1 millisecond? The answer is 1000. We assume you are converting between microsecond and millisecond. You can view more details on each measurement unit: us or millisecond The SI base unit for time is the second. 1 second is equal to 1000000 us, or 1000 millisecond. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.