Counting seconds or hours in a week or day may seems trivial to most people, although if a business is operating a machine that packs a number of items per second or hour each year it make a significant difference, as with amount of seconds in a year.

The standard unit measurement of time is “Second” in this case. One second is 1/60 of a minute or 1/3600 of an hour.

Calculation how many actual seconds are in one day first work out the seconds in units of time in one day; Second in one minute & second in one hour, number of hours a day.

**Units of time in a day:**

60 Seconds in a minute

60 minutes = 1 hour

24 hours = 1 day

Seconds to days formula: Seconds in a minute x minutes per hour x hours per day

1 day = 24 hours into second’s conversion

Seconds in hour formula: Multiply number of second’s minute x number of minute per hour: Seconds 60 x 60 minutes = 3600 seconds in hour.

Now Multiply number hours per day x seconds an hour.

**Hours 24 x 3600 seconds in hour = 86,400 seconds in a day or 24 hours.**

**Alternative calculation number of seconds in day**

60 Seconds in a minute

60 minutes = 1 hour

24 hours = 1 day

Minutes in a day formula: Multiply number hours a day x minutes in hour

Hours 24 x 60 minutes = 1440 minutes in a day.

Now multiply minutes in a day x seconds in a minute: Minutes 1440 x 60 seconds = 86,440 seconds in a day. **(**Calendar Year)

or

Full formula:

**24 hours day x 60 minutes hour x 60 seconds minutes = 86,400 seconds in a day. (Calendar Year)**

**Practice question**

A teacher in the UK requires being at school from 08.30 to 15.30 each school day.

How many seconds does the teacher spend at the school in one day?

**Answer**

First work out the total number of hours at school = 7 hours.

There’s 60 seconds in a minute, 60 minutes = 1 hour, 24 hours = 1 day

Work out seconds in one hour: Formula: Multiply seconds in a minute x minutes in one hour

60 x 60 = 3,600 seconds in 1 hour

Now multiply seconds per hour x hours in school

**3,600 x 7 = 25,200 seconds in school per day**