Gutenberg Readability Search - Readability Catalog of Project Gutenberg eBooks

This table shows the readability data of selected Project Gutenberg eBooks.

  • To search books by Charles Dickens, search with dickens.
  • Input adventure to show Adventures of Huckleberry Finn, Adventures of Sherlock Holmes, Alice's Adventures in Wonderland, etc.
  • Vocabulary size input 13000 gives eBooks suitable for the vocabulary size.
  • Search with a blank input shows the whole catalog.
  • To sort, click the title of the row.


  • Tweet website's pick for you with #readabilitysquare!

    973 results.

    Vocabulary Coverage
    (Difficult: 98%, Appropriate: 99%)
    Conventional Readability Formula
    Title Author Translator Born Died 90% 95% 98% 99% 99.5% 99.9% Word Count (Pages) Words per Sentence Syllables per Word Fog Index Flesch Reading Ease Flesch-Kincaid
    Details The History of the Peloponnesian War Thucydides Crawley, Richard 455BC (1840) 395BC (1893) 2000 4000 6000 8000 11000 17000 204634
    (511)
    39.8 1.57 22.0 33.4 18.5
    Details The Decameron of Giovanni Boccaccio Boccaccio, Giovanni Payne, John 1313 (1842) 1375 (1916) 3000 6000 12000 15000 18000 22000 306465
    (766)
    44.1 1.44 21.5 40.2 18.6
    Details Don Quixote Cervantes Saavedra, Miguel de Ormsby, John 1547 (1829) 1616 (1895) 3000 5000 8000 11000 13000 20000 425471
    (1063)
    45.3 1.41 21.6 41.9 18.7
    Details The Critique of Pure Reason Kant, Immanuel Meiklejohn, J. M. D. (John Miller Dow) 1724 (1830) 1804 (1902) 3000 4000 7000 10000 15000 18000 206467
    (516)
    35.8 1.72 22.9 24.9 18.7
    Details Utilitarianism Mill, John Stuart 1806 1873 3000 4000 6000 8000 10000 15000 27456
    (68)
    39.0 1.64 22.5 28.2 19.0
    Details A Journal of the Plague Year, written by a citizen who continued all the while i Defoe, Daniel 1661 1731 2000 3000 6000 9000 13000 15000 93796
    (234)
    46.5 1.43 22.5 38.7 19.4
    Details Areopagitica A speech for the Liberty of Unlicensed Printing to the Parliament o Milton, John 1608 1674 3000 6000 10000 13000 15000 21000 17989
    (44)
    44.3 1.51 22.9 34.0 19.5
    Details Robinson Crusoe Defoe, Daniel 1661 1731 2000 3000 6000 8000 11000 17000 120387
    (300)
    49.5 1.38 22.5 39.8 20.0
    Details Paradise Lost Milton, John 1608 1674 4000 7000 13000 18000 18000 23000 79709
    (199)
    49.9 1.37 22.9 40.2 20.1
    Details The History of Don Quixote, Volume 1, Complete Cervantes Saavedra, Miguel de Ormsby, John 1547 (1829) 1616 (1895) 3000 4000 8000 11000 13000 19000 215612
    (539)
    48.7 1.41 23.1 37.8 20.1
    Details The Declaration of Independence of The United States of America United States 3000 5000 8000 10000 13000 17000 1478
    (3)
    39.9 1.71 24.3 21.5 20.2
    Details Micrographia Some Physiological Descriptions of Minute Bodies Made by Magnifying Hooke, Robert 1635 1703 2000 4000 7000 10000 13000 19000 147089
    (367)
    48.8 1.46 23.6 33.9 20.7
    Details In Praise of Folly Illustrated with Many Curious Cuts Erasmus, Desiderius 1469 1536 4000 6000 10000 12000 15000 22000 44403
    (111)
    48.2 1.52 24.3 29.4 21.1
    Details The Golden Asse Apuleius, Lucius 125 180 3000 6000 10000 15000 17000 23000 80574
    (201)
    51.6 1.43 24.2 33.7 21.4
    Details A Modest Proposal Swift, Jonathan 1667 1745 3000 4000 7000 9000 14000 18000 3406
    (8)
    50.8 1.53 25.1 25.5 22.3
    Details Utopia More, Thomas, Sir, Saint 1478 1535 2000 3000 6000 8000 10000 14000 43401
    (108)
    55.4 1.43 26.2 29.7 22.9
    Details A Brief Account of the Destruction of the Indies Or, a faithful NARRATIVE OF THE Casas, Bartolomé de las 1474 1566 3000 6000 9000 12000 15000 22000 30124
    (75)
    53.7 1.51 26.5 24.5 23.2
    Details The Critique of Practical Reason Kant, Immanuel Abbott, Thomas Kingsmill 1724 (1829) 1804 (1913) 3000 3000 6000 8000 12000 17000 62637
    (156)
    50.4 1.64 27.2 16.6 23.4
    Details The Princess of Cleves La Fayette, Madame de (Marie-Madeleine Pioche de La Vergne) 1634 1693 2000 4000 6000 9000 12000 15000 61526
    (153)
    56.6 1.45 26.7 27.1 23.5
    Details Politics: A Treatise on Government Aristotle Ellis, William 384BC 322BC 2000 3000 6000 8000 11000 15000 101343
    (253)
    55.7 1.54 27.9 20.4 24.2
    Details Memoirs Of Fanny Hill A New and Genuine Edition from the Original Text (London, Cleland, John 1709 1789 3000 4000 8000 11000 13000 19000 84355
    (210)
    57.8 1.49 27.7 22.4 24.5
    Details Discourse on the Method of Rightly Conducting One's Reason and of Seeking Truth Descartes, René 1596 1650 3000 3000 6000 9000 11000 18000 23024
    (57)
    81.4 1.54 38.0 -5.7 34.3
    Details Fifteen Thousand Useful Phrases A Practical Handbook Of Pertinent Expressions, S Kleiser, Grenville 1868 1953 6000 9000 12000 15000 17000 22000 81255
    (203)
    230.2 1.83 101.1 -181.4 95.7

    Notes:

    Numbers in the parentheses of the born/died information denotes the translators' born/died year.
    Some of the born/died information of the authors and the translators of the wource data, catalog.rdf provided by the Project Gutenberg, have interrogation marks, which were stripped off in the table of this website for ease of processing the data.
    The authors and the translators displayed in the table are only one of multiple data stated in the catalog.rdf, if the work is composed by more than one author or translator, for ease of processing the data in this website.
    The "Pages" shown in the parentheses at the "Word Count" are the results of the division of the "Word Count" by 400, where this website assumes a page of a book includes 400 words.