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How Many Seconds in a Day? (Simple Calculation)

How many seconds in a day
How many seconds in a day

Did you ever wonder How Many Seconds in a Day? We know some basic facts like How many seconds in a minute, minutes in an hour, etc. But calculating the number of seconds in a day is quite difficult because it needs some calculations. But Don’t worry, this blog is to help you in calculating seconds in a day?

Table of Contents:

What is Second?

The Second is known as the basic unit of time as per the International System of Units and it is a part of the calculation of acceleration, velocity, etc. It is a very important term in our Calendar Calculations and multiples of seconds are counted as minutes, hours.

How many Seconds in a day?

As we know, 1 hour has 60 minutes and 1 minute has 60 seconds. We can start our Seconds in a day calculation with the basic multiplication.

1 hour = 60 minutes

1 minute = 60 Seconds

So, 1 hour = 60 * 60 = 3600 Seconds

Therefore, 1 hour has 3600 seconds

Then our next step is to calculate seconds in a day

So, 1 day = 24 hours

1 day = 24 * 3600 = 86400

Therefore, there are 86400 seconds in a day

Some Facts about Seconds:

how many seconds in a day
  • Second is a unit of time, so minutes and hours are multiples of seconds
  • Due to variation in Earth’s rotation, the addition of leap second to clock time at irregular intervals takes place
  • Small Fractions of seconds are known as milliseconds, nanoseconds and microseconds
  • The use of seconds in clock time comes from the Babylonians


In this blog, we see about seconds in a day calculation. I hope you understand the calculation steps clearly, if you find this blog helpful share this with your friends and follow PublishSquare for more blogs like this. As a summary, I below give some basic terms,

  • 60 seconds = 1 minute
  • 3600 seconds = 1 hour
  • 86400 seconds = 1 day
  • 604800 seconds = 1 week
  • 2.628e+6 seconds = 1 month
  • 3.154e+7 seconds = 1 calender year

Also Read: How many Weeks in a Year

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About the author


A Content Writer at PublishSquare who is passionate about Seo, Creative Writing, Digital Marketing with 2+ years of experience in Content Creation for blogs and social media.