How Many Seconds in a Day? Days to Seconds

Day → Second

1 day = 86,400 s, and 1 second = 0.0000115741 d.

86,400 s
Formula & conversion factor
s = d × 86,400
1 d = 86,400 s · 1 s = 0.0000115741 d

A day has 24 hours, each hour 60 minutes and each minute 60 seconds. The chart shows seconds for a week, a month and a year of days.

Day to Second conversion table

ds
1 d86,400 s
2 d172,800 s
3 d259,200 s
5 d432,000 s
7 d604,800 s
10 d864,000 s
14 d1,209,600 s
30 d2,592,000 s
31 d2,678,400 s
60 d5,184,000 s
90 d7,776,000 s
100 d8,640,000 s
180 d15,552,000 s
365 d31,536,000 s
366 d31,622,400 s
1,000 d86,400,000 s

Calculated with the same formula as the converter, rounded to six significant digits.

Frequently asked questions

How many seconds are in 1 day?

1 day equals 86,400 s. Formula: s = d × 86,400.

What is 10 days in seconds?

10 d = 864,000 s, because 10 × 86,400 = 864,000.

How many days are in 1 second?

1 second equals 0.0000115741 d. To convert back, divide by 86,400.

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