The number of Planck volumes (cubic Planck lengths) in the observable universe is around \(4.65 \times 10^{185}\).[1]

One Planck length is \(1.616 \times 10^{-35}\) meters, and the volume of the observable universe is \(\approx 4 \times 10^{80}\) cubic meters.

Approximations

Notation Approximation
Scientific notation \(4.65\times 10^{185}\)
BEAF {10,185}
Fast-growing hierarchy \(f_2(607)\)

Sources

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