Convert 12 hours to seconds

Explanation

Let's convert 12 hours to seconds, or h to s as one could put it.

First, we need to calculate the conversion factor using the units respective values. We find 3600.

Then we multiply this conversion factor by the number of hours. In this case 12.

Therefore, 12 hours is equal to 43200 seconds.

Formula

1 h=3600 s

12 h=12 × 3600 s

12 h=43200 s

hoursh

dimension	time
symbol	h

The hour (h) is a common unit of measurement of time. It is accepted for use with the SI.

One hour can be divided into 60 minutes of 60 seconds each.

Definition of the hour

One hour is equal to 3600 seconds.

The International System of Units 9^th edition p. 145

Equivalences

Here are some equivalences between the hour and other units of time:

Some Facts

The length of days on Earth is increasing, drifting further and further from the "ideal" day of 24 hours as the Moon moves away from us. It is the same phenomenon that figure skaters experiment when they stretch their arms out while spinning.

Common time units

second	s
minute	min	60 seconds
hour	h	60 minutes
day	d	24 hours
week	w	7 days
year	y	365 days

A sexagesimal system

Hours, minutes and seconds are an example of a sexagesimal or base 60 numeral system.

The number 60 is a superior highly composite number, meaning it has a lot of factors. This allows for some simplification when dividing.

Since there are 60 minutes in an hour, the hour can be divided evenly in eleven different ways (with sections of 30, 20, 15, 12, 10, 6, 5, 4, 3, 2 and of course 1 minute).

Coming up with and remembering 60 different symbols would be cumbersome, that is why we write the sexagesimal digit using the decimal system.

secondss

dimension	time
system	International system of units (SI)
symbol	s

The second (s) is the base unit of time in the International System of Units.

Definition of the second

It is defined by taking the fixed numerical value of the caesium frequency ∆ν_Cs, the unperturbed ground-state hyperfine transition frequency of the caesium-133 atom, to be 9 192 631 770 when expressed in the unit Hz, which is equal to s^–1.

From the BIPM: Unit of time

Equivalences

One second is equivalent to:

Some Facts

As of 2021, the world record for the 100 meters dash is held by the Jamaican Usain Bolt with a time of 9.58 seconds.

SI time units

picosecond	ps	0.000 000 000 001
nanosecond	ns	0.000 000 001
microsecond	µs	0.000 001
millisecond	ms	0.001
second	s	1
kilosecond	ks	1000
megasecond	Ms	1 000 000
gigasecond	Gs	1 000 000 000
terasecond	Ts	1 000 000 000 000

The International System of Units

The International System of Units or SI (from the French Système international (d'unité)), also called metric system in the U.S., is a coherent system of units that was published 1960. It is official in nearly every country.

The General Conference on Weights and Measures (Conférence générale des poids et mesures) is tasked with overseeing the SI.