# Convert Days to Seconds

Enter the time in days below to get the value converted to seconds.

**Results in Seconds:**

## How to Convert Days to Seconds

To convert a day measurement to a second measurement, multiply the time by the conversion ratio. One day is equal to 86,400 seconds, so use this simple formula to convert:

The time in seconds is equal to the days multiplied by 86,400.

**For example,**here's how to convert 5 days to seconds using the formula above.

Days and seconds are both units used to measure time. Keep reading to learn more about each unit of measure.

## Days

One day is the time it takes for the Earth to complete a single rotation around its axis in relation to the Sun. There are 24 hours in a day.

The day is an SI accepted unit for time for use with the metric system. Days can be abbreviated as *day*, for example 1 day can be written as 1 day.

## Seconds

The second has historically been defined as 1/60 of a minute or 1/86,400 of a day. The SI defines the second as the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium 133 atom.

The second is the SI base unit for time in the metric system. Seconds can be abbreviated as *sec*, for example 1 second can be written as 1 sec.

## Day Measurements and Equivalent Second Conversions

Days | Seconds |
---|---|

1 day | 86,400 sec |

2 day | 172,800 sec |

3 day | 259,200 sec |

4 day | 345,600 sec |

5 day | 432,000 sec |

6 day | 518,400 sec |

7 day | 604,800 sec |

8 day | 691,200 sec |

9 day | 777,600 sec |

10 day | 864,000 sec |

11 day | 950,400 sec |

12 day | 1,036,800 sec |

13 day | 1,123,200 sec |

14 day | 1,209,600 sec |

15 day | 1,296,000 sec |

16 day | 1,382,400 sec |

17 day | 1,468,800 sec |

18 day | 1,555,200 sec |

19 day | 1,641,600 sec |

20 day | 1,728,000 sec |

21 day | 1,814,400 sec |

22 day | 1,900,800 sec |

23 day | 1,987,200 sec |

24 day | 2,073,600 sec |

25 day | 2,160,000 sec |

26 day | 2,246,400 sec |

27 day | 2,332,800 sec |

28 day | 2,419,200 sec |

29 day | 2,505,600 sec |

30 day | 2,592,000 sec |

31 day | 2,678,400 sec |

32 day | 2,764,800 sec |

33 day | 2,851,200 sec |

34 day | 2,937,600 sec |

35 day | 3,024,000 sec |

36 day | 3,110,400 sec |

37 day | 3,196,800 sec |

38 day | 3,283,200 sec |

39 day | 3,369,600 sec |

40 day | 3,456,000 sec |

## More Day Time Conversions

- Convert to Centuries
- 1 day is equal to 2.7379E-5 centuries
- Convert to Decades
- 1 day is equal to 0.000274 decades
- Convert to Years
- 1 day is equal to 0.002738 years
- Convert to Months
- 1 day is equal to 0.032855 months
- Convert to Weeks
- 1 day is equal to 0.142857 weeks
- Convert to Hours
- 1 day is equal to 24 hours
- Convert to Minutes
- 1 day is equal to 1,440 minutes
- Convert to Milliseconds
- 1 day is equal to 86,400,000 milliseconds
- Convert to Microseconds
- 1 day is equal to 86,400,000,000 microseconds
- Convert to Nanoseconds
- 1 day is equal to 86,400,000,000,000 nanoseconds