Size of Our Material Universe according to Vedic Sastra

"The full size of our Brahmanda Egg shaped Universe is a massive 44 Quadrillion 444 Trillion 444 billion miles in diameter"

Our Material Universe called a Brahmanda is but just one in a multi-verse, even the latest scientific speculation believe our individual Brahmanda Universe is but one of billions of other Universes.

Each bubble in the painting is a different Brahmanda Universe in a multi-verse all originating from the Body of Maha Vishnu

Our Brahmanda is considered to be small compared to others and is a massive 44 Quadrillion 444 Trillion 444 billion miles in diameter

Around 22 Quadrillion 222 Trillion 222 billion deep inside the Brahmanda at its middle is found another smaller inner Universe that is just 4 billion miles in diameter and called the Bhu-Mandala Universe that has 14 different Planetary Systems within it.

Also at the bottom of the Bhu-mandala Univere is an expansion of Maha Vishnu caled Garbhodakashayi Vishnu from whom a stem grows from His naval and at the top of the stem is a lotus flower where Lord Brahma resides.

Within and surrounding the stem which is Mt Meru, possibly symbolically exists all 14 Planetary Systems.

The inner Bhu-Mandala Universe is 4 billion miles in diameter.

There are "seven material layers" of the Brahmanda Universe

The first layer of the outer Brahmanda Dome encasing the Bhu-Mandala Universe is earth which is 10 times thicker than the 4 billion mile diameter Bhu-Mandala inner Universe which equals -

1 - Bhu-Mandala Universe is 4,000,000,000 (4 billion miles in size)

2 - Earth layer is 10×4 = 40,000,000,000 (40 billion miles thick)

3 - Water layer is 10×40 = 400,000,000,000 (400 billion)

4 - Fire layer is 10×400 = 4000,000,000,000 (4000 billion which is 4 Trillion)

5 - Air layer is 10×4 = 40,000,000,000,000 (40 Trillion)

6 - Sky layer is 10×40 = 400,000,000,000,000 (400 Trillion)

7 - Ego layer is 10×400 = 4000,000,000,000,000 (4000 Trillion which is 4 Quadrillion)

8 - Mahat-tattva layer is 10×4000 = 40,000,000,000,000,000 (40 Quadrillion)

So the full size of our Brahmanda Egg shaped Universe is a massive 44 Quadrillion 444 Trillion 444 billion miles in diameter.

Srimad Bhagavatam 3.11.41

TRANSLATION

The layers or elements covering the universes are each ten times thicker than the one before, and all the universes clustered together appear like atoms in a huge combination.

PURPORT

The coverings of the universes are also constituted of the elements of earth, water, fire, air and ether, and each is ten times thicker than the one before. The first covering of the universe is earth, and it is ten times thicker than the universe itself.

If the universe is four billion miles in size, then the size of the earthly covering of the universe is four billion times ten.

The covering of water is ten times greater than the earthly covering, the covering of fire is ten times greater than the watery covering, the covering of air is ten times greater than that of the fire, the covering of ether is ten times greater still than that of air, and so on.

The universe within the coverings of matter appears to be like an atom in comparison to the coverings, and the number of universes is unknown even to those who can estimate the coverings of the universes.