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SECOND
SECOND extracts the seconds portion of a time value, returning an integer from 0 to 59. Use it for high-precision time analysis such as validating that timestamps are on exact minute boundaries, or when computing durations down to the second.
Excel
=SECOND(TIMEVALUE("14:37:45"))Google Sheets
=SECOND(TIMEVALUE("14:37:45"))✓
Verified example
Computed by a real spreadsheet engine on the sample data below.
| EventTime | Seconds |
| 0.375 | |
| 0.604861111 | |
| 0.916701389 | |
| 0.500694444 |
=SECOND(TIMEVALUE("14:37:45"))→45
Try it with your data
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Sample data — click any cell to edit
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How it works
- 1Confirm your time data is stored as Excel time serial numbers, not text.
- 2In cell B2 enter =SECOND(A2) to extract the seconds component.
- 3Use HOUR, MINUTE, and SECOND together to fully decompose a timestamp.
Need a version for your data?
Try: “Check whether any event timestamps have non-zero seconds in them”