Language learning · 7 min read
How to choose an English book for your CEFR level
You know your level. You want a novel, not a textbook. The question is which one — and most answers to it are guesses dressed up as advice.
This one is not. Every figure below comes from measuring the full text of the 170 public-domain English books on this site: every word looked up in a CEFR-graded vocabulary list, counted rather than estimated. The method is written down, including where it is weak.
The short answer
At B1, start with something short. At B2, most of the shelf is open to you. At C1, difficulty stops being about vocabulary and starts being about style.
And at every level, the thing that decides whether you finish is not the level badge. It is whether looking up a word costs you three seconds or thirty.
A book's level is not your level
When a book is labelled B2 here, that is a statement about the book: the vocabulary it uses and how long its sentences run. It is not a claim that a B2 learner will understand all of it, or that a B1 learner will not cope.
The 170 books fall out like this:
| Band | Books | What it means |
|---|---|---|
| B1 | 29 | The plainest prose on the shelf |
| B2 | 73 | Ordinary novel English |
| C1 | 63 | Longer sentences, or a wider vocabulary to carry |
| C2 | 5 | Demanding on both counts |
Note how few books sit at B1. That is not a gap in the collection — it is what real books are like. Prose written for adults clusters around B2 and C1, and the B1 end is mostly children's fiction, short stories, and writers with unusually plain style.
The number that looks alarming, and why it mostly isn't
Reading research puts comfortable comprehension somewhere around 95–98% of the running words known — a threshold this article goes through in detail. Measured against a B1 vocabulary, the median book on the shelf scores 87.3%. Not one of the 170 reaches 95%.
Read plainly, that says a B1 learner cannot comfortably read any of these books. But that is not what it says, and the reason is worth understanding before you pick anything.
About 10% of every one of these texts is off-list: words no graded vocabulary list covers. Most of them are names and places. Take A Christmas Carol:
| A1 vocabulary | 74.1% |
|---|---|
| A2 | 8.4% |
| B1 | 5.2% |
| Known at B1 | 87.7% |
| Off-list | 8.1% |
| Genuinely unfamiliar at B1 | 4.2% |
Scrooge and Marley are counted as unknown words. You meet them once and you know them for the rest of the book. Set the off-list share aside and what remains is about one unfamiliar word in twenty-four — right at the edge of the comfortable range rather than hopelessly outside it.
Be careful with that reasoning, though: off-list is not purely proper nouns. It also holds archaic vocabulary and words the lists simply miss, and those do have to be learned. The honest reading is that your real comprehension sits somewhere between the two numbers — closer to the higher one in a novel full of recurring characters, closer to the lower one in something dense and old.
Three things that matter more than the badge
1. Length, which almost everyone underweights
The shelf runs from 8,756 words to 89,115 — a factor of ten. A short book one step above your level will teach you more than a long book exactly at it that you abandon in chapter four. Finishing is the thing that builds reading stamina, and nothing else does.
If you have never finished a book in English, choose by hours before you choose by level.
2. Dialogue
Among these books, the 88 that are more than half dialogue average about 14 words per sentence. The 17 with almost none average 21. Dialogue reuses common vocabulary, breaks the page into short units, and tells you who is speaking, which is context you get for free.
3. Whether you actually want to read it
Not measurable, and more predictive than either of the above. A book you are curious about carries you past sentences you only half understand. A book you picked because it was graded correctly does not.
If you are B1
Start short. These are the shortest of the easiest, with the time a learner would actually take:
- The Stainless Steel Rat — Harry Harrison. 8,756 words, about an hour. The easiest short thing here.
- The Story of Doctor Dolittle — Hugh Lofting. 25,514 words, a little over three hours.
- Lady Into Fox — David Garnett. 24,557 words, about three hours, and stranger than it sounds.
If you would rather have a long book you can live in, At the Back of the North Wind is the joint-easiest book on the entire shelf at 22/100, and 92.3% of it is B1 or below — but it is 89,115 words, so treat it as a project.
If you are B2
Seventy-three books sit in this band, which is most of the ordinary novels. Good places to start:
- Fifty-One Tales — Lord Dunsany. 16,225 words of very short pieces, so you can stop anywhere.
- Northanger Abbey — Jane Austen. 77,813 words and the most approachable Austen here, if you want a real novel.
- The Circular Staircase — Mary Roberts Rinehart. A mystery, which helps: plot pulls you forward when the vocabulary does not.
If you are C1
At this point the measurements stop being the interesting part. The vocabulary gap between a B2 and a C1 book is small; what changes is sentence construction, irony, and how much the writer expects you to infer.
- Ethan Frome — Edith Wharton. 35,999 words. Short, and does a great deal with plain vocabulary.
- Just So Stories — Rudyard Kipling. Written to be read aloud, which makes the rhythm carry you.
- Running a Thousand Miles for Freedom — William and Ellen Craft. 25,501 words of first-hand narrative.
How to check any book yourself
Every book on the shelf has its own page with the full breakdown: the A1–C2 split, what share you would recognise at each level, sentence length, how much is dialogue, and which ten-percent stretch of the book is the hardest. Open a book's Full analysis link and read the numbers before you commit six hours to it.
Two habits worth more than any of the figures. Read the first page in the shop or the sample — if you are stopping more than a few times in that page, the book is above where you want to be today. And check the length in hours rather than pages, because pages lie about how long a book takes in a language you are still learning.
The gap that stays
Choose well and you will still meet an unfamiliar word every twenty words or so. No choice of book removes that; it is what reading in a language you are learning is.
What you can change is what happens next. Stopping to search a dictionary costs perhaps thirty seconds and, worse, drops the thread of the sentence you were in. Doing that fifty times an hour is why people abandon books they were enjoying.
ClickBook exists for that specific gap: tap the word and the explanation arrives beside it, built from the sentence it is standing in, on the phone, without leaving the page. It does not make the book easier. It makes the interruption small enough that the book stays readable.
What ClickBook is → · Browse the 170 free English books by difficulty →