Written and reviewed by FormulaCraft Team. Each formula on this page is run through our verification engine before publishing.
Last reviewed:
How to round a time to the nearest 15 minutes in Excel and Google Sheets
Topic:Rounding & number formattingExcel & Google Sheets
=MROUND(A2,"0:15")✓
Verified example
Computed by a real spreadsheet engine on the sample data below.
| Raw Time | Rounded 15 min |
| 9:07 AM | |
| 10:23 AM | |
| 2:38 PM | |
| 4:52 PM |
=MROUND(A2,"0:15")→0.375
Try it with your data
Edit the grid or formula, then run it through a real spreadsheet engine — no signup.
Sample data — click any cell to edit
Runs server-side · free · no signup
Step by step
- 1Enter time values in column A (formatted as Time).
- 2In B2 enter =MROUND(A2,"0:15") — Excel and Sheets both accept time strings as the multiple.
- 3Alternatively use the numeric form: =MROUND(A2,15/1440) since there are 1440 minutes in a day.
- 4Format column B as Time to display HH:MM.
Tips
- To always round UP to the next 15 minutes (like billing), use =CEILING(A2,"0:15"). To always round DOWN, use =FLOOR(A2,"0:15").
Working on a sheet you inherited? Run the Auditor on the whole file first — it flags every #REF!, #N/A, broken column pattern, and inconsistent formula in seconds, free, no signup.
Frequently asked
What is 15/1440 in the formula?
Excel stores time as a fraction of 24 hours. 15 minutes = 15/60/24 = 15/1440 of a day. Using "0:15" as a string is equivalent and easier to read.
Can I round to 30-minute intervals?
Yes — use =MROUND(A2,"0:30") or =MROUND(A2,30/1440).