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ReadLength
De Quincey, Thomas · d. 1859 · measured edition

Confessions of an English Opium-Eater

2h 34mof reading at 250 wpm

Confessions of an English Opium-Eater by De Quincey, Thomas runs to 38,549 words — about 2h 34m of reading at an average adult pace of 250 words per minute, or roughly 140 pages at typical paperback density.

Extent 38,549 words · 5,893 distinct forms · 1,101 sentences · F–K grade 15.3

SOURCE·Project Gutenberg full texts·computed from the full text·REVIEWED JUL 2026

Extent — 140 pages against 2h 34m of reading

Above the rule one mark per reading hour at 250 wpmBelow a folio every 50 pages at 275 words to the page

SOURCE·Project Gutenberg full texts·counted from the text, not a publisher's page count·REVIEWED JUL 2026

Words38,549longer than 14% of books here
Reading time2h 34mat 250 wpm
Reading level15.3Flesch–Kincaid grade
Unique words5,893vocabulary size

How this is worked out

  1. The Project Gutenberg plain-text edition is fetched, then Gutenberg's header and licence footer are struck at the *** START *** and *** END *** markers. Nothing is taken from a publisher's listing.
  2. What remains is counted as that edition sets it: 38,549 words, 1,101 sentences, syllables by vowel-group heuristic.
  3. Words are divided by a stated reading rate. This page's headline uses 250 words a minute; a duration printed without its rate cannot be checked, so the rate travels with every figure and the table below runs 150–450 wpm.
  4. Minutes are rounded once, to the nearest minute, and set as h:mm. Nothing on this page is rounded twice.
  5. The page extent is a courtesy conversion at 275 words to the page — a typesetting figure, not a property of the book.
words ÷ rate            = minutes
38,549 ÷ 250 wpm   = 154 min   → 2h 34m
words ÷ density         = extent
38,549 ÷ 275 w/pp  = 140 pages

The method in full, including why your count may differ →

How long it takes to read, by reading speed

Most adults read prose at 200–300 words per minute. Reading speed varies far more between people than most reading-time estimates admit, so here is the whole range.

Reading speedTotal timeAt 30 min/dayAt 1 hour/day
Slow / careful (150 wpm) 4h 17m9 days5 days
Below average (200 wpm) 3h 13m7 days4 days
Average adult (250 wpm) 2h 34m6 days3 days
Fast (300 wpm) 2h 08m5 days3 days
Very fast (450 wpm) 1h 26m3 days2 days

The full measurement

Total words38,549
Unique words5,893
Lexical diversity15.29% unique words as a share of total
Sentences1,101
Average sentence length35 words
Average syllables per word1.46
Long words (3+ syllables)11.5%
Flesch–Kincaid grade15.3
Flesch reading ease47.4 higher is easier; 60–70 is plain English
Gunning fog index18.6
Coleman–Liau index9.6

Computed from the Project Gutenberg plain-text edition with the Gutenberg header and licence footer removed. See how and why your count may differ.

SOURCE·Project Gutenberg full texts·ebook no. 2040·REVIEWED JUL 2026

Reading it in evenings

The same 38,549 words, divided by the habit rather than by the hour — and then a rate of your own, if 250 wpm is not yours.

10 min a day 16 days
20 min a day 8 days
30 min a day 6 days
60 min a day 3 days
Worked from the text: 38,549 words ÷ 250 words per minute = 154 minutes of reading, divided by the daily habit and rounded up to whole days.

SOURCE·Project Gutenberg full texts·reading rate stated: 250 wpm·REVIEWED JUL 2026

Average adult prose speed is 200–300 wpm. Not sure? Time yourself on one page.

Is it a hard read?

Four different readability formulas agree it is difficult — college level: Flesch–Kincaid puts it at grade 15.3, Gunning fog at 18.6, Coleman–Liau at 9.6. The Flesch reading-ease score of 47.4 is heavy going by modern standards.

The mechanics behind that: sentences average 35 words (modern prose tends to run 15–20), and 11.5% of words are three syllables or longer. Its vocabulary is unusually varied — 5,893 distinct words, or 15.29% of the total.

A caution about all of this: readability formulas measure sentence and word length, nothing more. They cannot see irony, dialect, allusion or an unreliable narrator. A book can score as "easy" and still be genuinely difficult to follow.

The second question

What people ask once the duration is on the table.

How many words are in Confessions of an English Opium-Eater?

38,549 words in the Project Gutenberg edition, made up of 5,893 distinct words across 1,101 sentences. That is longer than 14% of the books measured on this site.

How long does it take to read Confessions of an English Opium-Eater?

About 2h 34m at an average adult reading speed of 250 words per minute. A slower reader at 150 wpm would need roughly 4h 17m; a fast reader at 400 wpm about 1h 36m.

What reading level is Confessions of an English Opium-Eater?

It scores 15.3 on the Flesch–Kincaid grade scale — difficult — college level. Its Flesch reading-ease score is 47.4, sentences average 35 words, and 11.5% of its words run to three syllables or more.

How many pages is Confessions of an English Opium-Eater?

Page counts depend entirely on the edition — font, trim size and margins all change them, which is why this site measures words instead. At a typical trade-paperback density of about 275 words per page, 38,549 words works out to roughly 140 pages.

Colophon

Measured from the Project Gutenberg plain-text edition, ebook no. 2040, with Gutenberg’s header and licence footer struck before counting. 38,549 words, 1,101 sentences, 5,893 distinct forms. No text of the work is set anywhere on this site — only measurements of it.

The extent of 140 pages is a conversion at 275 words to the page, not this edition’s foliation: a page count belongs to a typesetting, never to a book. Reading time assumes 250 words a minute and is stated with its rate everywhere it appears.

SOURCE·Project Gutenberg ebook no. 2040·US public domain·REVIEWED JUL 2026

Word counts and reading levels are computed from a specific public-domain edition and will differ from other editions and from other counting methods — see the method page.

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