# Orders of magnitude (entropy)

The following list shows different orders of magnitude of entropy.

Factor (J K−1) Value Item
10−24 9.5699×10−24 J K−1 Entropy equivalent of one bit of information, equal to k times ln(2)[1]
10−23 1.381×10−23 Planck entropy
1 5.74 J K−1 Standard entropy of 1 mole of graphite[2]
1033 ≈ 1035 J K−1 Entropy of the Sun (given as ≈ 1042 erg K−1 in Bekenstein (1973))[3]
1054 1.5 × 1054 J K−1 Entropy of a black hole of one solar mass (given as ≈ 1060 erg K−1 in Bekenstein (1973))[3]
1081 4.3 × 1081 J K−1 One estimate of the theoretical maximum entropy of the universe[4][5]

## References

1. ^ Jean-Bernard Brissaud (14 February 2005). "The Meaning of Entropy" (PDF). Entropy, 2005, 7[1], 68–96. Retrieved 2010-04-21. page 72 (page 5 of pdf)
2. ^ Chung Chieh. "Entropy: A Study Guide". Retrieved 2010-04-21.
3. ^ a b Jacob D. Bekenstein (1973). "Black Holes and Entropy" (PDF). Physical Review D. 7 (8): 2333–2346. Bibcode:1973PhRvD...7.2333B. doi:10.1103/PhysRevD.7.2333. Archived from the original (PDF) on 2010-05-23.
4. ^ Chas A. Egan; Charles H. Lineweaver (25 January 2010). "A Larger Estimate of the Entropy of the Universe". The Astrophysical Journal. 710 (2): 1825–1834. arXiv:0909.3983. Bibcode:2010ApJ...710.1825E. doi:10.1088/0004-637X/710/2/1825. 3.1 x 10^104k
5. ^ Calculated: 3.1e104 * k = 3.1e104 * 1.381e-23 J/K = 4.3e81 J/K