Round time to nearest 15min interval in Excel

Question

I\'ve an excel spreadsheet with a column which has the date and time of a particular event. I would like to round this to the nearest 15 minute interval so that I can count

Answer 1

If you want to round to the Nearest 15:

Assuming your time is in cell A2

We'll put our new time into B2:

B2 =TIME(HOUR(A2), ROUND((MINUTE(A2)/60)*4, 0) * 15, 0)

If you wanted to always round up or down you replace ROUND with ROUNDUP or ROUNDDOWN