How Many Seconds in a Day?
The Answer
There are 86,400 seconds in a day.
One day contains 86,400 seconds. Use the converter below for any other value.
seconds to days Converter
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Seconds in Common Time Spans
| Time span | Seconds |
|---|---|
| one day | 24 |
| 7 days (one week) | 168 |
| 30 days (one month) | 720 |
| 365 days (one year) | 8,760 |
How Many seconds in a day?
There are 86,400 seconds in a day.
The Simple Math
The calculation is straightforward:
So 1440 minutes × 0.016667 second per minute = 86,400 seconds.
What That Looks Like
A day is a long span, so 86,400 seconds can be hard to picture. A few real-world anchors help:
Common Questions About seconds in a day
Are seconds exact? Yes — the count above is exact because it is built from the base values (60 seconds in a minute, 24 hours in a day, 7 days in a week). The only approximation is the month, which we treat as 30 days for consistent planning. How many seconds in a week? A week is 10,080 minutes exactly, so it contains 168 seconds. How many seconds in a year? A 365-day year is 525,600 minutes, or 8,760 seconds.Frequently Asked Questions
How Many Seconds in a Day?
There are 86,400 seconds in a day. This is based on the standard values: 0.017 seconds in a minute, 60 minutes in an hour, 24 hours in a day, and 7 days in a week.
How do you calculate the number of seconds in a day?
Multiply the number of minutes in a day (1,440) by the number of seconds in a minute (0.017). That gives 86,400 seconds.
Is the number of seconds in a day exact?
Yes, for days, weeks, and years the number is exact (24 hours in a day, 7 days in a week, 365 days in a year).
How many seconds in a week?
A week is exactly 10,080 minutes, which is 168 seconds.
How many seconds in a year?
A 365-day year is exactly 525,600 minutes, which is 8,760 seconds.