# How do you calculate the age of the universe using the Hubble constant?

##### 1 Answer

The reciprocal of the Hubble constant

#### Explanation:

1/(Hubble constant) is an estimate for the age of our universe.

A recent value of the Hubble constant

71 km/sec/mega parsec.

1 mega parsec = 10^6 parsec and

1 parsec = 206265 AU.

1 AU = 149597871 km.

Note that the dimension

So,

Now, the dimensionless

(1km) / 1mpc

#=(1 km)/(206265X10^6X149597871km)

Thus

I think that I have now made it more reader-friendly, and in

particular, Friddle-friendly.

See

http://hyperphysics.phy-astr.gsu.edu/hbase/Astro/hubble.html

https://map.gsfc.nasa.gov/universe/uni_expansion.html

https://en.wikipedia.org/wiki/Parsec

https://en.wikipedia.org/wiki/Astronomical_unit