1 year has 31,536,000 seconds.
If it’s leap year, then 1 year has 31,622,400 seconds.
Seconds in a year calculation
We know that 1 year has 365 days (366 days during leap year).
We know that 1 day is 24 hours.
1 hour is 60 minutes.
And we know that 1 minute is 60 seconds.
So if we multiply all that through, we have:
= 365 days per year x 24 hours per day x 60 minutes per hour x 60 seconds per minute
= 31,536,000 seconds per year
Of course, now that you know that there are 86,400 seconds per day, you can calculate how many seconds there are…
– per week
– per decade
– per century…
…and virtually every other expanse of time.