What Is the CEFR? A Plain Guide to A1 to C2

If you have looked at an English course, an exam or a job advertisement, you have probably seen a label such as B1 or C1. The letters and numbers come from the CEFR, a scale for describing language ability. Many people use the labels without ever being told what stands behind them, so this guide starts from the beginning.

Where the CEFR comes from

CEFR stands for the Common European Framework of Reference for Languages. It was developed by the Council of Europe, a European organization for human rights and cooperation that is separate from the European Union, and the main framework was published in 2001. A companion volume later added more descriptions and widened the picture beyond reading, writing, speaking and listening to include activities such as explaining and relaying information between people.

The aim was practical. Before the CEFR, a school in one country might call a student "intermediate" while an employer in another country used the same word for something quite different. The framework gave teachers, exam boards and employers a shared way to say how well someone can use a language, whichever course they took and wherever they took it.

Today it is used well beyond Europe, and it is not tied to one language. Cambridge English, one of the exam bodies that builds its tests around the scale, describes it as an international standard for describing language ability, with six points from beginner level (A1) to mastery (C2).

The six levels

The levels sit in three bands. A is a basic user, B is an independent user, and C is a proficient user. Each band has two levels.

These are paraphrases. The official wording is longer, and each level is described across several skills, so one person can sit at different levels for reading and speaking. That is normal. A learner who reads at B2 but speaks at B1 is not doing anything wrong.

Each level has its own guide on this blog, starting with A1 and ending with C2, if you want the detail for one of them.

It describes what you can do

The word that matters most in all of these descriptions is "can". The CEFR is built from can-do statements, which say what a learner is able to do in a real situation. It does not count how many words you know or how many grammar rules you can name.

That makes it useful for planning. If you want to work in English, the question is not "do I know enough words?" but "can I follow a team meeting, write a clear email and handle a disagreement politely?" The levels give you a way to talk about those abilities without having to invent your own scale.

What the CEFR does not do

The scale is useful, but it has limits, and it helps to know them before you rely on a label.

It is not a test. The CEFR does not give anyone a score. Exams and assessments are built to match its levels, and they are the ones that produce results. Cambridge English names several of its exams after the levels they target, for example B1 Preliminary, B2 First and C1 Advanced.

It does not list words. The framework describes abilities, not vocabulary. No official document says that a particular word belongs at B1. Projects that map words to levels exist, and each one is an estimate built from data, so two word lists can disagree about a word. Wordabulary does the same thing: the level tag on each word is the app's own estimate of when a learner is likely to be ready for it, not an official ruling.

The levels are not equal steps. Moving from A1 to A2 and moving from B2 to C1 are very different amounts of work, and the time needed varies a great deal from person to person.

A label is a summary, not a verdict. Your result on any one day depends on the topic, your tiredness and the kind of task. Treat it as a good starting guess.

Where you will meet the levels

Exams and institutions use the scale to explain what their results mean. Cambridge English builds its range of exams around it. TOEIC says its tests are aligned with the CEFR. From January 2026 the TOEFL iBT reports a 1 to 6 score band that is linked to the CEFR, alongside the older 0 to 120 scale for a two-year transition period. Universities and employers often write their requirements in CEFR terms too, such as "B2 or above".

If an organization asks for a level, look at what it means by it. Some ask for a level on a named exam, and some accept several tests. The organization's own page is the place to check, because requirements change.

How Wordabulary uses the scale

Every word in the Wordabulary library carries a level from A1 to C2, so practice can match words to where you are instead of showing everything at once. The placement assessment is a short set of questions that estimates your starting level, and your practice sessions and quizzes then lean on words around that level. The word of the week comes from the C1 and C2 range, where words tend to be more precise and less common. The details are in how the placement assessment works.

Remember that the app's tags are estimates, as described above. If a word is tagged B2 and you already know it well, that is fine. The tag is a guide for the app, not a score for you.

If you would like to see how large each level's vocabulary tends to be, vocabulary size by CEFR level puts the numbers in context. If you are curious how examiners decide a level in speaking and writing, how CEFR levels are evaluated explains the criteria.