In 1 days there are 86,400 seconds. Meanwhile in 1 seconds there are 0.0000115741 days. Keep reading to learn more about each unit of measure and how they are calculated. Or just use the Seconds to Days calculator above to convert any number.
* Values rounded to 6 decimal places for readability
To convert days to seconds, use a simple time conversion.
Formula (days to seconds):
seconds = days × 86,400
Quick examples:
Tip: Keep units clear. You’re converting a time value from days into seconds using a fixed rate.
A standard day has 86,400 seconds.
That comes from 24 hours x 60 minutes x 60 seconds.
Multiply the number of days by 86,400.
Seconds = Days x 86,400
1 day = 86,400 seconds.
2 days = 2 x 86,400 = 172,800 seconds.
7 days = 7 x 86,400 = 604,800 seconds.
30 days = 30 x 86,400 = 2,592,000 seconds.
365 days = 365 x 86,400 = 31,536,000 seconds.
Half a day is 12 hours.
0.5 day = 0.5 x 86,400 = 43,200 seconds.
A quarter day is 6 hours.
0.25 day = 0.25 x 86,400 = 21,600 seconds.
Yes. Multiply the decimal days by 86,400.
1.75 days = 1.75 x 86,400 = 151,200 seconds.
For most uses, no. The day-to-seconds conversion stays 86,400 seconds per day.
Leap years add an extra day to the year, not extra seconds to a normal day.
In daily life, a daylight saving shift can make a local day feel like 23 or 25 hours.
In time math, a standard day is still 24 hours = 86,400 seconds.
In most cases, yes. A standard day is treated as 86,400 seconds.
Some time systems can add rare adjustments, but they don’t affect most conversions.
Divide seconds by 86,400.
Days = Seconds ÷ 86,400
100,000 ÷ 86,400 = 1.1574 days (about 1.16 days).
The Calculate Box tool to convert days to seconds uses the open source script Convert.js to convert units of measurement. To use this tool, simply type a days value in the box and have it instantly converted to seconds.