# Convert Excel time to decimal seconds

=A1*86400

To convert a valid Excel time into decimal seconds, you can multiply by 86400. In the example shown, the formula in C6 is:

=B6*86400

which returns a value of 60, since there are 60 seconds in 1 minute.

In the Excel time system, one 24-hour day is equal to 1. This means times and hours are fractional values of 1, as shown in the table below:

Hours | Time | Fraction | Value |
---|---|---|---|

1 | 1:00 AM | 1/24 | 0.04167 |

3 | 3:00 AM | 3/24 | 0.125 |

6 | 6:00 AM | 6/24 | 0.25 |

4 | 4:00 AM | 4/24 | 0.167 |

8 | 8:00 AM | 8/24 | 0.333 |

12 | 12:00 PM | 12/24 | 0.5 |

18 | 6:00 PM | 18/24 | 0.75 |

21 | 9:00 PM | 21/24 | 0.875 |

Because each hour can be represented as 1/24, you can convert an Excel time into decimal hours by multiplying the value by 24, convert to decimal minutes by multiplying the value by 1440 (24 * 60) , and convert to seconds by multiplying by 86400 (24 * 60 * 60).

With the time value 6:00 cell A1, you can visualize the conversion like this:

=A1*(24*60*60) =(6/24)*86400 =0.25*86400 =21,600

The Excel time 6:00 converts to 21,600 seconds.

### Format result as number

When you multiply a time value by 86400, Excel may automatically format the result using a time format like h:mm, which will display the value incorrectly. To display the result as a regular number, apply the General or Number format.

## Excel Formula Training

Formulas are the key to getting things done in Excel. In this accelerated training, you'll learn how to use formulas to manipulate text, work with dates and times, lookup values with VLOOKUP and INDEX & MATCH, count and sum with criteria, dynamically rank values, and create dynamic ranges. You'll also learn how to troubleshoot, trace errors, and fix problems. Instant access. See details here.

## Download 200+ Excel Shortcuts

Get over 200 Excel shortcuts for Windows and Mac in one handy PDF.