Our software library provides a free download of Date Time Duration 2.0. Our antivirus check shows that this download is virus free. The latest setup package takes up 905 KB on disk. This tool was originally designed by Tumbling Wave Software.
From the developer:
Get elapsed time in Excel, with millisecond accuracy. The DATETIMEDURATION formula calculates exact time or date units. Returns years, months, days, or the fractional hours, minutes, seconds between two dates or two times. A more precise alternative to the DATEDIF formula. Perfect for timestamped files, SCADA logs, time series data or cumulative hour calculations. Simply supply the start time and end time, along with the desired time unit result.
You may want to check out more software, such as Advanced Date Time Calculator, Date Time Counter or Change file date time software, which might be similar to Date Time Duration.