About this tool
Break a millisecond value into days, hours, minutes, seconds and milliseconds, or build a total from a duration, all in your browser.
Frequently asked questions
Can it handle very large values?
Yes, you can enter any whole number of milliseconds and it splits it into days, hours, minutes, seconds and milliseconds.
What does the second box do?
It works in reverse, turning a days/hours/minutes/seconds/ms duration into a single total in milliseconds.